Maintenance Manual MM-1719
Anti-Lock Braking System (ABS) and Electronic Stability Control (ESC)For Modular Braking System Platform (mBSPTM) Version ECUs12-Volt SystemsIssued 06-17
Service Notes
Information contained in this publication was in effect at the time the publication was approved for printing and is subject to change without notice or liability. Meritor WABCO reserves the right to revise the information presented or to discontinue the production of parts described at any time.
Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
About This ManualThis manual provides maintenance procedures for Meritor WABCO’s Anti-Lock Braking System (ABS), Electronic Stability Control (ESC) and Hill Start Aid (HSA) using Modular Braking System Platform (mBSPTM) version ECUs.
Before You Begin1. Read and understand all instructions and procedures before
you begin to service components.
2. Read and observe all Warning and Caution hazard alert messages in this publication. They provide information that can help prevent serious personal injury, damage to components, or both.
3. Follow your company’s maintenance and service, installation, and diagnostics guidelines.
4. Use special tools when required to help avoid serious personal injury and damage to components.
Hazard Alert Messages and Torque SymbolsRead and observe all Warning and Caution hazard alert messages in this publication. They provide information that can help prevent serious personal injury, damage to components, or both.
WARNINGA Warning alerts you to an instruction or procedure that you must follow exactly to avoid serious personal injury and damage to components.
CAUTIONA Caution alerts you to an instruction or procedure that you must follow exactly to avoid damage to components.
@ This symbol alerts you to tighten fasteners to a specified torque value.
WARNINGTo prevent serious personal injury, always wear safe eye protection when you perform vehicle maintenance or service.
Release all air from the air systems before you remove any components. Pressurized air can cause serious personal injury.
CAUTIONWhen welding on an ABS- or ABS/ATC/HSA/ESC-equipped vehicle is necessary, disconnect the power connector from the ECU to prevent damage to the electrical system and ABS/ATC components.
How to Obtain Additional Maintenance, Service and Product InformationVisit Literature on Demand at meritor.com to access and order additional information.
Contact the Meritor OnTrac™ Customer Call Center at 866-668-7221 (United States and Canada); 001-800-889-1834 (Mexico); or email [email protected].
If Tools and Supplies are Specified in This ManualContact Meritor’s Commercial Vehicle Aftermarket at 888-725-9355.
Contents
pg. pg.i Asbestos and Non-Asbestos Fibers1 Section 1: Introduction
ContentsAnti-Lock Braking System (ABS)System ComponentsElectronic Control Unit (ECU)Wheel Speed Sensing SystemsPressure Modulator Valves
2 Active Braking Valves (ABV)3 Foot Brake Valve (FBV)
Steering Angle Sensor (SAS)Electronic Stability Control (ESC) ModuleTrailer Modulator ValveOff-Road ABS SwitchATC Switch
4 Section 2: Stability and Safety Enhancement SystemsAutomatic Traction Control (ATC)ATC ComponentsATC SwitchElectronic Stability Control (ESC)ESC ComponentsHill Start Aid (HSA)HSA ComponentsDrag Torque Control
5 Section 3: Diagnostics, Troubleshooting and TestingMaintenance InformationTOOLBOX™ Software Diagnostics
7 TestingWheel Speed Sensor Testing
9 Modulator Valve Testing10 ABV Testing
ESC CAN Network TestingESC Module TestingESC Module MountingSAS
11 Section 4: Wiring Diagrams and ConnectorsmBSPTM ABS ECU Wiring Diagram
12 Harness Connectors
16 Section 5: SPN FMI Fault CodesDTC SPN FMI Tables
Asbestos and Non-Asbestos Fibers
i Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
ASBESTOS FIBERS WARNING The following procedures for servicing brakes are recommended to reduce exposure to asbestos fiber dust, a cancer and lung disease hazard. Material Safety Data Sheets are available from Meritor.
Hazard SummaryBecause some brake linings contain asbestos, workers who service brakes must understand the potential hazards of asbestos and precautions for reducing risks. Exposure to airborne asbestos dust can cause serious and possibly fatal diseases, including asbestosis (a chronic lung disease) and cancer, principally lung cancer and mesothelioma (a cancer of the lining of the chest or abdominal cavities). Some studies show that the risk of lung cancer among persons who smoke and who are exposed to asbestos is much greater than the risk for non-smokers. Symptoms of these diseases may not become apparent for 15, 20 or more years after the first exposure to asbestos.
Accordingly, workers must use caution to avoid creating and breathing dust when servicing brakes. Specific recommended work practices for reducing exposure to asbestos dust follow. Consult your employer for more details.
Recommended Work Practices1. Separate Work Areas. Whenever feasible, service brakes in a separate area away from other operations to reduce risks to unprotected persons. OSHA has set a maximum allowable level of exposure for asbestos of 0.1 f/cc as an 8-hour time-weighted average and 1.0 f/cc averaged over a 30-minute period. Scientists disagree, however, to what extent adherence to the maximum allowable exposure levels will eliminate the risk of disease that can result from inhaling asbestos dust. OSHA requires that the following sign be posted at the entrance to areas where exposures exceed either of the maximum allowable levels:
DANGER: ASBESTOSCANCER AND LUNG DISEASE HAZARD
AUTHORIZED PERSONNEL ONLYRESPIRATORS AND PROTECTIVE CLOTHING
ARE REQUIRED IN THIS AREA. 2. Respiratory Protection. Wear a respirator equipped with a high-efficiency (HEPA) filter approved by NIOSH or MSHA for use with asbestos at all times when servicing brakes, beginning with the removal of the wheels.3. Procedures for Servicing Brakes.a. Enclose the brake assembly within a negative pressure enclosure. The enclosure should be
equipped with a HEPA vacuum and worker arm sleeves. With the enclosure in place, use the HEPA vacuum to loosen and vacuum residue from the brake parts.
b. As an alternative procedure, use a catch basin with water and a biodegradable, non-phosphate, water-based detergent to wash the brake drum or rotor and other brake parts. The solution should be applied with low pressure to prevent dust from becoming airborne. Allow the solution to flow between the brake drum and the brake support or the brake rotor and caliper. The wheel hub and brake assembly components should be thoroughly wetted to suppress dust before the brake shoes or brake pads are removed. Wipe the brake parts clean with a cloth.
c. If an enclosed vacuum system or brake washing equipment is not available, employers may adopt their own written procedures for servicing brakes, provided that the exposure levels associated with the employer’s procedures do not exceed the levels associated with the enclosed vacuum system or brake washing equipment. Consult OSHA regulations for more details.
d. Wear a respirator equipped with a HEPA filter approved by NIOSH or MSHA for use with asbestos when grinding or machining brake linings. In addition, do such work in an area with a local exhaust ventilation system equipped with a HEPA filter.
e. NEVER use compressed air by itself, dry brushing, or a vacuum not equipped with a HEPA filter when cleaning brake parts or assemblies. NEVER use carcinogenic solvents, flammable solvents, or solvents that can damage brake components as wetting agents.
4. Cleaning Work Areas. Clean work areas with a vacuum equipped with a HEPA filter or by wet wiping. NEVER use compressed air or dry sweeping to clean work areas. When you empty vacuum cleaners and handle used rags, wear a respirator equipped with a HEPA filter approved by NIOSH or MSHA for use with asbestos. When you replace a HEPA filter, wet the filter with a fine mist of water and dispose of the used filter with care.5. Worker Clean-Up. After servicing brakes, wash your hands before you eat, drink or smoke. Shower after work. Do not wear work clothes home. Use a vacuum equipped with a HEPA filter to vacuum work clothes after they are worn. Launder them separately. Do not shake or use compressed air to remove dust from work clothes.6. Waste Disposal. Dispose of discarded linings, used rags, cloths and HEPA filters with care, such as in sealed plastic bags. Consult applicable EPA, state and local regulations on waste disposal.
Regulatory GuidanceReferences to OSHA, NIOSH, MSHA, and EPA, which are regulatory agencies in the United States, are made to provide further guidance to employers and workers employed within the United States. Employers and workers employed outside of the United States should consult the regulations that apply to them for further guidance.
NON-ASBESTOS FIBERS WARNING The following procedures for servicing brakes are recommended to reduce exposure to non-asbestos fiber dust, a cancer and lung disease hazard. Material Safety Data Sheets are available from Meritor.
Hazard SummaryMost recently manufactured brake linings do not contain asbestos fibers. These brake linings may contain one or more of a variety of ingredients, including glass fibers, mineral wool, aramid fibers, ceramic fibers and silica that can present health risks if inhaled. Scientists disagree on the extent of the risks from exposure to these substances. Nonetheless, exposure to silica dust can cause silicosis, a non-cancerous lung disease. Silicosis gradually reduces lung capacity and efficiency and can result in serious breathing difficulty. Some scientists believe other types of non-asbestos fibers, when inhaled, can cause similar diseases of the lung. In addition, silica dust and ceramic fiber dust are known to the State of California to cause lung cancer. U.S. and international agencies have also determined that dust from mineral wool, ceramic fibers and silica are potential causes of cancer.
Accordingly, workers must use caution to avoid creating and breathing dust when servicing brakes. Specific recommended work practices for reducing exposure to non-asbestos dust follow. Consult your employer for more details.
Recommended Work Practices1. Separate Work Areas. Whenever feasible, service brakes in a separate area away from other operations to reduce risks to unprotected persons.
2. Respiratory Protection. OSHA has set a maximum allowable level of exposure for silica of 0.1 mg/m3 as an 8-hour time-weighted average. Some manufacturers of non-asbestos brake linings recommend that exposures to other ingredients found in non-asbestos brake linings be kept below 1.0 f/cc as an 8-hour time-weighted average. Scientists disagree, however, to what extent adherence to these maximum allowable exposure levels will eliminate the risk of disease that can result from inhaling non-asbestos dust.
Therefore, wear respiratory protection at all times during brake servicing, beginning with the removal of the wheels. Wear a respirator equipped with a high-efficiency (HEPA) filter approved by NIOSH or MSHA, if the exposure levels may exceed OSHA or manufacturers’ recommended maximum levels. Even when exposures are expected to be within the maximum allowable levels, wearing such a respirator at all times during brake servicing will help minimize exposure.
3. Procedures for Servicing Brakes.
a. Enclose the brake assembly within a negative pressure enclosure. The enclosure should be equipped with a HEPA vacuum and worker arm sleeves. With the enclosure in place, use the HEPA vacuum to loosen and vacuum residue from the brake parts.
b. As an alternative procedure, use a catch basin with water and a biodegradable, non-phosphate, water-based detergent to wash the brake drum or rotor and other brake parts. The solution should be applied with low pressure to prevent dust from becoming airborne. Allow the solution to flow between the brake drum and the brake support or the brake rotor and caliper. The wheel hub and brake assembly components should be thoroughly wetted to suppress dust before the brake shoes or brake pads are removed. Wipe the brake parts clean with a cloth.
c. If an enclosed vacuum system or brake washing equipment is not available, carefully clean the brake parts in the open air. Wet the parts with a solution applied with a pump-spray bottle that creates a fine mist. Use a solution containing water, and, if available, a biodegradable, non-phosphate, water-based detergent. The wheel hub and brake assembly components should be thoroughly wetted to suppress dust before the brake shoes or brake pads are removed. Wipe the brake parts clean with a cloth.
d. Wear a respirator equipped with a HEPA filter approved by NIOSH or MSHA when grinding or machining brake linings. In addition, do such work in an area with a local exhaust ventilation system equipped with a HEPA filter.
e. NEVER use compressed air by itself, dry brushing, or a vacuum not equipped with a HEPA filter when cleaning brake parts or assemblies. NEVER use carcinogenic solvents, flammable solvents, or solvents that can damage brake components as wetting agents.
4. Cleaning Work Areas. Clean work areas with a vacuum equipped with a HEPA filter or by wet wiping. NEVER use compressed air or dry sweeping to clean work areas. When you empty vacuum cleaners and handle used rags, wear a respirator equipped with a HEPA filter approved by NIOSH or MSHA, to minimize exposure. When you replace a HEPA filter, wet the filter with a fine mist of water and dispose of the used filter with care.
5. Worker Clean-Up. After servicing brakes, wash your hands before you eat, drink or smoke. Shower after work. Do not wear work clothes home. Use a vacuum equipped with a HEPA filter to vacuum work clothes after they are worn. Launder them separately. Do not shake or use compressed air to remove dust from work clothes.
6. Waste Disposal. Dispose of discarded linings, used rags, cloths and HEPA filters with care, such as in sealed plastic bags. Consult applicable EPA, state and local regulations on waste disposal.
Regulatory GuidanceReferences to OSHA, NIOSH, MSHA, and EPA, which are regulatory agencies in the United States, are made to provide further guidance to employers and workers employed within the United States. Employers and workers employed outside of the United States should consult the regulations that apply to them for further guidance.
1 Introduction
1Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
1 IntroductionContentsThis manual contains service information for the following systems.
� Meritor WABCO mBSPTM anti-lock braking system (ABS)
� Automatic traction control (ATC)
� Electronic stability control (ESC) for trucks, tractors and buses
The ABS version is marked on the ECU. Figure 1.1. If you cannot identify the ECU version installed on your vehicle, contact Meritor WABCO OnTrac at 866-OnTrac1 (668-7221).
Figure 1.1
Anti-Lock Braking System (ABS)ABS is a system designed to provide and maintain the best possible traction and steering control during an extreme braking event. During a potential wheel lock event, the ABS ECU, using information provided by the wheel speed sensors, sends a signal(s) to the appropriate modulator valve(s) to hold, apply or release the brakes as needed. ABS works automatically. The driver does not have to select this feature.
System Components
Electronic Control Unit (ECU)The ECU is the control center or “brain” of the ABS, ATC and ESC systems. It receives information from the sensors and CAN data link, processes data and sends signals to modulators and active braking valves to achieve different tasks.
Wheel Speed Sensing SystemsWheel speed sensing systems consist of a tooth wheel mounted on the hub or rotor of each monitored wheel and a speed sensor installed with its end against the tooth wheel. The sensor continuously sends wheel speed information to the ECU. A sensor clip holds the sensor in place and against the tooth wheel. Figure 1.2.
Figure 1.2
Pressure Modulator ValvesA modulator valve controls air pressure to an affected wheel-end brake during an ABS or ESC event to reduce speed and prevent wheel lock-up. Modulator valves are also used during ATC events to correctly gain traction on the affected wheel end.
A modulator valve is usually located on a frame rail or cross member near the brake chamber or as part of a valve package. A valve package combines two modulator valves, a service relay or quick release valve, and depending on the vehicle configuration, an active braking valve (ABV). Figure 1.3, Figure 1.4, Figure 1.5 and Figure 1.6.
Figure 1.1
4013279a
Figure 1.2
1002009bSENSOR
CLIP
SENSOR
TOOTHWHEEL
1 Introduction
2 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 1.3
Figure 1.4
Figure 1.5
Figure 1.6
Active Braking Valves (ABV)Two active braking valves (ABV), sometimes referred to as 3/2 valve, are solenoid valves which are integrated into the valve packages and are used to produce active braking during ATC or ESC events. Depending on the mBSPTM system configuration, ABVs can be located in the front axle braking system and rear axle braking system.
Figure 1.3
Figure 1.4
4013097a
FRONT AXLE VALVE PACKAGEPART NUMBER 976 200 100 0 AND 976 200 101 0
4013100a
REAR VALVE PACKAGEPART NUMBERS 976 000 120 0, 976 000 107 0
AND 976 000 112 0
Figure 1.5
Figure 1.6
4013101a
REAR VALVE PACKAGEPART NUMBERS 976 000 121 0, 976 000 103 0,
976 000 105 0 AND 976 000 110 0
4013102a
SOLENOID MODULATOR VALVEPART NUMBER 472 196 025 0
1 Introduction
3Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Foot Brake Valve (FBV)The foot brake valve (FBV) is part of the mBSPTM brake system. It provides the system with the driver’s brake demand. The FBV generates the electrical and pneumatic signals required for the control of a pneumatic braking system. Normally, the FBV is actuated by a foot pedal assembly. Figure 1.7.
Figure 1.7
Steering Angle Sensor (SAS)The SAS is part of the mBSPTM ESC system. The SAS delivers the driver’s steering input (steering wheel position) to the ECU using the vehicle chassis CAN communication data link. The SAS is provided by the vehicle manufacturer.
Electronic Stability Control (ESC) ModuleThe ESC module is part of the mBSPTM ESC system. It measures the vehicle yaw rate as well as vehicle lateral acceleration. It exchanges data with the ECU via the ESC system internal data link. The ECU supplies the module with voltage and ground. The ESC module must be initialized by diagnostic tools whenever the ECU or the ESC module is replaced. Figure 1.8.
Figure 1.8
Trailer Modulator ValveFor some stability control applications, an additional modulator valve (the same as what is used for ABS modulation) will be located in the trailer control line downstream of the front axle ABV which is also used to control the trailer.
Off-Road ABS SwitchOn some vehicles, an off-road ABS switch can be included. The off-road ABS function improves vehicle control and helps reduce stopping distances in off-road conditions or on poor traction surfaces such as loose gravel, sand and dirt.
ATC SwitchA vehicle manufacturer might offer an ATC switch to control the ATC function. The ATC switch can be configured to momentarily disable ATC.
Figure 1.7
4013104a
FOOT BRAKE VALVE DIGITALPART NUMBER 461 333 008 0
Figure 1.8
4013106a
ESC 6 MODULEPART NUMBER 446 065 080 0
2 Stability and Safety Enhancement Systems
4 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
2 Stability and Safety Enhancement SystemsAutomatic Traction Control (ATC)ATC is available as an option with mBSPTM ECUs and is standard on most. ATC helps improve traction in low traction road conditions. ATC reduces the potential of jackknifing caused by excessive wheel spin during acceleration or in curves.
ATC ComponentsATC uses the base ABS components plus an active braking valve that can be installed with individual modulator valves, or installed as part of the rear valve package.
When installed with individual modulator valves, the active braking valve is mounted on the frame or cross member, near the rear of the vehicle.
When it is part of the rear valve package, the active braking valve is attached to the relay valve.
ATC SwitchIf the vehicle manufacturer offers an ATC switch to control the ATC functionality, the switch can be configured as an ATC momentary override option. This function allows the driver to momentarily disable/override ATC for the duration of the ignition cycle.
Electronic Stability Control (ESC)Electronic Stability Control (ESC) combines the rollover prevention with directional stability in order to keep the vehicle traveling on its intended path by providing spinout and drift out control. ESC is automatic. It becomes active when the system senses imminent directional or roll instabilities, often before the driver is aware. You will notice a difference in the vehicle when stability control is functioning, but you should continue to drive as normal and provide any additional needed corrections. You may again notice a reduction in engine torque and additional deceleration from the retarder, if so equipped. You also may notice individual or all brakes applying depending on whether the vehicle is in a roll or directional control event.
ESC ComponentsESC is built from the ABS platform and uses many of the same components as ATC. An active braking valve to control the front axle brakes and trailer, a foot brake valve, an ESC module and a Steering Angle Sensor (SAS) are required.
The ESC ECU contains parameter settings which are specific to a vehicle configuration validated by Meritor WABCO Engineering. It is imperative that the correct ECU is installed on your vehicle in service. Contact Meritor WABCO or your respective vehicle OEM with any questions regarding ESC ECU.
Hill Start Aid (HSA)HSA supports select automated manual transmissions in reducing/totally eliminating the rolling back of the vehicle while launching on a grade. When requested from the transmission, HSA holds pressure in the service brakes of all axles of the towing vehicle when the vehicle is standing still. HSA will hold pressure for a maximum of three seconds following full release of the brake pedal.
HSA ComponentsHSA is available with the mBSPTM brake system. Same as ESC, HSA is built from the ABS platform and uses many of the same components as ATC and ESC. HSA uses the front axle active braking valve as well as the rear active braking valve to help maintain the pressure trapped during HSA activation.
The foot brake valve provides the system with the driver’s brake demand. The measured pressure is used by HSA to set the trapped pressure and/or activate the HSA function. The vehicle manufacturer can provide an HSA switch multiplexed through the dashboard or hard wired for momentary HSA deactivation.
Drag Torque ControlThe ABS ECU has the ability to send a message to the engine to increase engine RPM to prevent drive axle lock-up, if the vehicle is on a downhill grade and in the incorrect gear.
3 Diagnostics, Troubleshooting and Testing
5Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
3 Diagnostics, Troubleshooting and TestingMaintenance InformationThere is no regularly scheduled maintenance required for the Meritor WABCO mBSPTM ABS, ATC or ESC systems. However, this does not change current vehicle maintenance requirements.
� Lamp Check: To ensure the ABS tractor lamp is operating, drivers should check the lamp every time the vehicle is started. When the vehicle is started, the ABS lamp should come on momentarily. If it does not come on, it could mean a burned-out bulb.
� ABS Wheel Speed Sensors: Check the wheel speed sensor adjustment and lubricate the sensor and sensor clip whenever wheel-end maintenance is performed. Use only Meritor WABCO-recommended lubricant.
TOOLBOX™ Software DiagnosticsFor complete instructions for installing and using TOOLBOX™ Software, refer to the User Manual posted on meritorwabco.com. Meritor WABCO TOOLBOX™ Software provides computer-based diagnostic capabilities for the complete range of Meritor WABCO Vehicle Control Systems. The program provides the following functions:
� Displays both static (e.g., ECU number) and dynamic (e.g., RPMs) information from the system under test.
� Displays both active and stored system faults, as well as the appropriate repair instructions.
� Activates system components to verify system integrity, correct component operation and installation wiring.
NOTE: For mBSPTM software versions, TOOLBOX™ 12.3 or higher is required.
To display ABS, ESC or HSA faults:
1. Connect the computer to the vehicle:
� Attach the USB/serial cable from your computer’s USB or serial port to the adapter.
� Attach the Deutsch diagnostic cable from the adapter to the vehicle. Figure 3.1.
Figure 3.1
2. Select the TOOLBOX™ Software icon from the desktop or from the Windows Start Menu to display the Main Menu.
3. Adapter Selection
Verify the TOOLBOX™ Software is set for the device and communication protocol that will be used.
To access “Adapter Selection” for TOOLBOX™ Software 11 or newer, click on “Utilities” from the main TOOLBOX™ screen. Figure 3.3.
Make sure the “Vendor:” and “Adapter:” drop-downs are set for the device being used and set the “Protocol:” drop-down to J1939 according to the system you will be communicating through, and click “OK”. Figure 3.2.
Figure 3.2
Figure 3.1
Figure 3.2
4010610a
TO VEHICLEDEUTSCH
CONNECTOR
USB ORSERIAL CABLE
ADAPTER
4013271a
3 Diagnostics, Troubleshooting and Testing
6 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
NOTE: When switching between J1939 and J1708 communications with TOOLBOX™ Software 11, the vehicle ignition must be cycled between sessions to correctly communicate with the ECU.
NOTE: TOOLBOX™ Software must be connected to the vehicle and the vehicle ignition must be ON in order to display information. If unable to communicate with the ECU:
� Verify device and data link connections are secure.
� Verify the device is RP1210A compliant and that the comport settings (Vendor, Protocol, Adapter) in TOOLBOX™ Software are correct.
� Verify the device software and firmware is up to date.
� Check all the powers and grounds coming to the ECU including load testing.
� Check VMM/chassis CAN circuit at the ECU and the data link connector.
4. Depending on the software version used, there will be two options to communicate with the vehicle:
� If using TOOLBOX™ 11 or higher and a vehicle with Software ECU E4.4b or higher, diagnostics over J1939 communications can be possible. Figure 3.3.
NOTE: mBSPTM software versions will only communicate over VMM/chassis CAN.
Figure 3.3
5. In the Main Menu, select Pneumatic ABS/ST Hydr J1939. The ABS Main Screen will appear. Figure 3.4.
Figure 3.4
6. Select Display from the top menu.
7. From the pull-down menu, select Diagnostic Trouble Codes. This will open the Fault Information screen. Figure 3.5 and Figure 3.6.
Figure 3.5
Figure 3.3
4013272a
Figure 3.4
Figure 3.5
4013273a
4010615a
3 Diagnostics, Troubleshooting and Testing
7Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 3.6
8. A description of the fault, the number of times the fault occurred, the system identifier (SID), the failure mode (FMI) and Suspect Parameter Number (SPN) are all displayed in the fault information window. Basic repair instructions for each fault are also provided. More detailed information about SID and FMI troubleshooting and repair is provided in the following section as well as the SID FMI table.
Double-clicking on the fault, or clicking on Details, will provide troubleshooting and detailed repair instructions. TOOLBOX™ Software version 11 also provides links to the appropriate system schematic which are also provided in this maintenance manual.
NOTE: If you are using TOOLBOX™ Software version 11, Internet Explorer is required to load files containing repair information, maintenance manual and schematics.
Faults that may occur after the screen is displayed will not appear until screen is manually updated. Use the Update button to refresh the fault information table.
After making the necessary repairs, use the clear faults button to clear the fault. Use the Update button to refresh the fault information table and display the new list of faults. Some faults may require vehicle ignition to be cycled and vehicle speed over 4 mph (6.4 kph) to clear them.
Use the Save or Print button to save or print the fault information data.
NOTE: If the TOOLBOX™ Software is unable to communicate with the ECU, verify the system is self-testing when the key is cycled.
If the system is not self-testing: Check all the powers and grounds connecting to the ECU including load testing.
If the system is self-testing: Check the following.
� Verify the ECU part number.
� Verify device and data link connections are secure.
� Verify the device is RP1210A compliant and that the comport settings (Vendor, Protocol, Adapter) in TOOLBOX™ Software are correct.
� Verify the device software and firmware are up-to-date.
Testing
Wheel Speed Sensor Testing
Sensor Adjustment
� Push the sensor in until it contacts the tooth wheel.
� Do not pry or push sensors with sharp objects.
� Sensors will self-adjust during wheel rotation.
Electrical Checks
� Check wheel speed sensor by itself for resistance.
� Check ECU harness and sensor together for resistance.
� Verify no change in resistance or open circuit between sensor by itself and through harness.
� Check harness by itself for any shorts to battery and shorts to ground.
� Measurements should read as follows:
Figure 3.6
4010616a
Location Measurement
Between sensor leads 900-2000 ohm
At ECU harness pins with sensor connected
Same as above, no more than 1 ohm difference
ECU harness by itself for DC voltage or ground
No continuity
Sensor output voltage At least 0.2 volt AC at 30 rpm
3 Diagnostics, Troubleshooting and Testing
8 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 3.7
Table A: X1 Harness Connector
Table B: X2 Harness Connector
Figure 3.7
36 35 34 33 32 31 30 29 28
27 26 25 24 23 22 21 20 19
18 17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1
18 17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1
X1 X2 X3
36 35 34 33 32 31 30 29 28
27 26 25 24 23 22 21 20 19
18 17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1
25 24 23 22 21 20 19
4013121a
mBSPTM ECULOOKING INTO WIRE HARNESS CONNECTORS
Pin Name Function
X1.1 WSS-FAL-L WSS Front Axle left low
X1.2 WSS-FAL-H WSS Front Axle left high
X1.3 ABS-FAL-IV ABS Valve FA left IV
X1.4 ABS-FAL-GND ABS Valve FA left GND
X1.5 ABS-FAL-OV ABS Valve FA left OV
X1.6 SYS-1A-GND ESCM Ground
X1.7 SYS-1A-UB ESCM Power Supply
X1.8 SYS-1A-CANL ESCM CAN-Low
X1.9 SYS-1A-CANH ESCM CAN-High
X1.10 WSS-FAR-L WSS Front Axle right low
X1.11 WSS-FAR-H WSS Front Axle right high
X1.12 ABS-FAR-IV ABS Valve FA right IV
X1.13 ABS-FAR-GND ABS Valve FA right GND
X1.14 ABS-FAR-OV ABS Valve FA right OV
X1.15 FA-ABV [ABV FA] *3
X1.16 FA-ABV-GND [ABV FA GND] *3
X1.17
X1.18
X1.19 WSS-DAL-L WSS Drive Axle left low
X1.20 WSS-DAL-H WSS Drive Axle left high
X1.21 ABS-DAL-IV ABS Valve DA left IV
X1.22 ABS-DAL-GND ABS Valve DA left GND
X1.23 ABS-DAL-OV ABS Valve DA left OV
X1.24 DA-ABV [ABV DA] *3
X1.25 DA-ABV-GND [DAL DA GND] *3
X1.26 TRV-GND [ABV Trailer GND] *3
X1.27 TRV [ABV Trailer] *3
X1.28 WSS-DAR-L WSS Drive Axle right low
X1.29 WSS-DAR-H WSS Drive Axle right high
X1.30 ABS-DAR-IV ABS Valve DA right IV
X1.31 ABS-DAR-GND ABS Valve DA right GND
X1.32 ABS-DAR-OV ABS Valve DA right OV
X1.33 AUX-3 [Trailer Modulator IV] *3
X1.34 AUX-3-GND [Trailer Modulator GND] *3
X1.35 AUX-4-GND [Trailer Modulator GND] *3
X1.36 AUX-4 [Trailer Modulator OV] *3
Pin Name Function
X2.1 VEH-CANL VMM/Chassis CAN Low
X2.2 VEH-CANSH VMM/Chassis CAN Shield
X2.3 VEH-CANH VMM/Chassis CAN High
X2.4 FBV-UB Foot Brake Valve Power Supply
X2.5 FBV-PW1 Foot Brake Valve PWM Signal 1
X2.6
X2.7
X2.8
X2.9
Pin Name Function
3 Diagnostics, Troubleshooting and Testing
9Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Table C: X3 Harness Connector
Modulator Valve Testing
Electrical Checks
� Check modulator valve by itself for resistance.
� Check ECU harness and modulator valve together for resistance. Figure 3.7.
� Verify no change in resistance or open circuit between valve by itself and through harness.
� Check harness by itself for any shorts to battery and shorts to ground.
� Measurements should read as follows:
X2.10
X2.11
X2.12 ALG1-S Analog 1 Signal
X2.13 FBV-GND Foot Brake Valve Ground
X2.14 FBV-PW2 Foot Brake Valve PWM Signal 2
X2.15
X2.16
X2.17
X2.18
X2.19 TRM-30A Ubat/Terminal 30A
X2.20 TRM-30B Ubat/Terminal 30B
X2.21
X2.22
X2.23 TRM-31A GND/Terminal 31A
X2.24 TRM-31B GND/Terminal 31B
X2.25
Pin Name Function
X3.1 WSS-IAL-L WSS Intermediate Axle left low
X3.2 WSS-IAL-H WSS Intermediate Axle left high
X3.3 ABS-IAL-IV ABS Valve IA left IV
X3.4 ABS-IAL-GND ABS Valve IA left GND
X3.5 ABS-IAL-OV ABS Valve IA left OV
X3.6 AUX-1 [Diff-Lock] *3
X3.7
X3.8
X3.9
X3.10 WSS-IAR-L WSS Int. Axle right low
X3.11 WSS-IAR-H WSS Int. Axle right high
X3.12 ABS-IAR-IV ABS Valve IA right IV
X3.13 ABS-IAR-GND ABS Valve IA right GND
X3.14 ABS-IAR-OV ABS Valve IA right OV
X3.15 AUX-1-GND [Dif-Lock GND] *3
X3.16
X3.17
Pin Name Function
X3.18
X3.19 AUX-5 [3/2-Valve Governor] *3
X3.20 AUX-5-GND [3/2-Valve Governor GND] *3
X3.21 AUX-6-GND [3/2-Valve Regeneration GND] *3
X3.22 AUX-6 [3/2-Valve Regeneration] *3
X3.23 AUX-2 [TC-Lock] *3
X3.24 AUX-2-GND [TC-Lock GND] *3
X3.25
X3.26
X3.27
X3.28
X3.29
X3.30
X3.31
X3.32
X3.33
X3.34
X3.35
X3.36
Location Measurement
Inlet valve pin to Ground 4.0-9.0 ohm for 12V system
Outlet valve pin to Ground 4.0-9.0 ohm for 12V system
At ECU harness pins with modulator valve connected
4.0-9.0 ohm for 12V system, no more than 1 ohm difference
Pin Name Function
3 Diagnostics, Troubleshooting and Testing
10 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
ABV Testing
Electrical Checks
� Check ABV 3/2 solenoid by itself for resistance.
� Check ECU harness and ABV 3/2 solenoid together for resistance. Figure 3.7.
� Verify no change in resistance or open circuit between ABV by itself and through harness.
� Check harness by itself for any shorts to battery and shorts to ground.
� Measurements should read as follows:
ESC CAN Network TestingThe ECU and ESC module are all connected on propriety CAN network with internal terminating resistors on each one of these components. A failure to one of the components will cause others to fault out.
ESC Module Testing
Electrical Checks
For the following checks, all of the ECU connectors must be plugged in. The ECU provides voltage, ground and CAN communication to ESC module.
� Take measurements at the ESC module harness connector.
� Measure voltage supply Key ON.
� Measure CAN High voltage Key ON.
� Measure CAN Low voltage Key ON.
� Measure terminating resistance across CAN High and Low with Key OFF.
With ECU and ESC Module disconnected:
� Verify continuity end to end on each line
� Verify no shorts to ground or battery on all lines.
� Verify no continuity between pins.
Measurements should read as follows:
ESC Module MountingThe ESC module contains sensors which measure both lateral acceleration and yaw rate. Thus, it is critical that the module is securely mounted, leveled and in correct location to the vehicle and that the module is mounted as expected by the ECU and as per vehicle OEM specifications.
The module should be installed in a manner where the label is right side up. The module must be mounted perpendicular to the vehicle frame rails on a cross member or cross member bracket. The module connector could be facing the front or rear of the vehicle depending on the OEM’s specified mounting. It is critical that the unit be mounted in the exact location and manner as originally installed by the vehicle manufacturer.
SAS TestingContact the OEM for electrical checks and all troubleshooting.
ECU harness by itself for battery voltage or ground
No continuity
Location Measurement
ABV Supply to ABV Common 7.0-14.0 ohm for 12V system
At ECU harness pins with ABV connected
7.0-14.0 ohm for 12V system, no more than 1 ohm difference
ECU harness by itself for battery voltage or ground
No continuity
Location Measurement
Circuit Measurement
Voltage Supply to Chassis Ground 8.0-16.0V
ESC Ground to Chassis Ground Less than 1 ohm resistance
Terminating Resistance between ESC CAN-High to ESC CAN-Low
Approximately 180 ohms
With ECU disconnected, check CAN lines, power supply and ground for battery voltage or ground.
No continuity
CAN High Voltage 2.5-5.0V
CAN Low Voltage 0.1-2.4V
4 Wiring Diagrams and Connectors
11Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
4 Wiring Diagrams and ConnectorsmBSPTM ABS ECU Wiring Diagram
Figure 4.1
Figure 4.1
4013112a
X2.8X2.6
X2.25X2.19
>2.5 MM3
F1
F2
FBV-UBFBV-GNDFBV-PW1FBV-PW2
SYS-1A-GNDSYS-1A-UB
SYS-1A-CANLSYS-1A-CANH
TRAILER MODULATOR-IV
TRAILER MODULATOR-GND
TRAILER MODULATOR-OV
TRAILER MODULATOR-GND
AUX-EAUX-E-GND
AUX-FAUX-F-GND
ABS-VALVE IA LEFT-IVABS-VALVE IA LEFT-GND
ABS-VALVE IA LEFT-OV
WSS-INTERMEDIATE AXLE LEFT-LWSS-INTERMEDIATE AXLE LEFT-H
WSS-INTERMEDIATE AXLE RIGHT-LWSS-INTERMEDIATE AXLE RIGHT-H
ABS-VALVE IA RIGHT-IVABS-VALVE IA RIGHT-GND
ABS-VALVE IA RIGHT-OV
ABS-VALVE DA LEFT-IVABS-VALVE DA LEFT-GNDABS-VALVE DA LEFT-OV
ABS-VALVE FA LEFT-IVABS-VALVE FA LEFT-GNDABS-VALVE FA LEFT-OV
VEH-CANLVEH-CANSHVEH-CANH
GND/TERMINAL-31AGND/TERMINAL-31B
UBAT/TERMINAL-30A
UBAT/TERMINAL-30B
WSS-DRIVE AXLE LEFT-LWSS-DRIVE AXLE LEFT-H
WSS-DRIVE AXLE RIGHT-LWSS-DRIVE AXLE RIGHT-H
WSS-FRONT AXLE LEFT-LWSS-FRONT AXLE LEFT-H
WSS-FRONT AXLE RIGHT-LWSS-FRONT AXLE RIGHT-H
ABS-VALVE DA RIGHT-IVABS-VALVE DA RIGHT-GNDABS-VALVE DA RIGHT-OV
ABS-VALVE FA RIGHT-IVABS-VALVE FA RIGHT-GNDABS-VALVE FA RIGHT-OV
ABV-DRIVE AXLEABV-DRIVE AXLE-GND
ABV-FRONT AXLEABV-FRONT AXLE-GND
FBVwith
2 Stroke
Sensors
ESCModule
X2.10X2.11
X2.20
X2.23
X2.24X2.1X2.2X2.3
X2.4X2.13X2.5X2.14
X2.12
X1.6X1.7X1.8X1.9
X1.33X1.34
X1.36X1.35
X1.27X1.26
X3.19
X3.20
X3.22
X3.21
X3.6
X3.15
X3.23
X3.24
X3.3
X3.4
X3.5
TWISTED
TWISTED
TWISTED
TWISTED
TWISTED
TWISTED
X1.3
X1.4
X1.5
X1.1
X1.2
X1.15
X1.16
X1.17
X1.18
X1.24
X1.25
X1.19
X1.20
X1.21
X1.22
X1.23
X1.10
X1.11
X1.12
X1.13
X1.14
X1.28
X1.29
X1.30
X1.31
X1.32
X3.1
X3.2
X3.10
X3.11
X3.12
X3.13
X3.14
>2.5 MM3
>2.5 MM2
>2.5 MM2
4 Wiring Diagrams and Connectors
12 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Harness Connectors
Figure 4.2
Figure 4.2
X1 X2 X3
CONNECTOR
X1
X2
X3
NUMBER OF PINS
2 X 18
18 + 7
2 X 18
CONNECTOR TYPE
C-114-18664, CODING A REV. F2
C-114-18721, CODING A REV. A1
C-114-18664, CODING B REV. F2 4013131a
4 Wiring Diagrams and Connectors
13Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 4.3
Figure 4.4
Figure 4.3
4013108a
ELECTRICAL PORT
X1.1
X1.2
X1.3
X2.1
X2.2
X2.3
X3.1
X3.3
UNIT FUNCTION
GROUND
INLET
OUTLET
GROUND
INLET
OUTLET
GROUND
INLET
TYPE
TYCO HDSCS 3X2.8 CODING AABS CONNECTOR LEFT
X1
ABS CONNECTOR RIGHTX2
ACTIVE BRAKING VALVE CONNECTORX3
TYCO HDSCS 3X2.8 CODING B
TYCO HDSCS 2X1.5 CODING A
3
X1.3
X1.1
X1.2
X1
REAR AXLE VALVE PACKAGE HARNESS CONNECTORS
2
1
3
X2.3
X2.1
X2.2
X2
2
1
X3.3
X3.1
X3
Figure 4.4
4013098a
X1.3
3/2 SOLENOIDVALVE CONNECTOR
X1
ELECTRICALPORT
X1.1
X1.1
X1.3
GROUND
INLET
FUNCTION
FRONT AXLE VALVE PACKAGE HARNESS CONNECTORCONNECTOR TYCO HDSCS 2 X 1.5 CODING A
4 Wiring Diagrams and Connectors
14 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 4.5
Figure 4.6
Figure 4.7
Figure 4.5
4013108a
ELECTRICAL PORT
X1.1
X1.2
X1.3
X2.1
X2.2
X2.3
X3.1
X3.3
UNIT FUNCTION
GROUND
INLET
OUTLET
GROUND
INLET
OUTLET
GROUND
INLET
TYPE
TYCO HDSCS 3X2.8 CODING AABS CONNECTOR LEFT
X1
ABS CONNECTOR RIGHTX2
ACTIVE BRAKING VALVE CONNECTORX3
TYCO HDSCS 3X2.8 CODING B
TYCO HDSCS 2X1.5 CODING A
3
X1.3
X1.1
X1.2
X1
REAR AXLE VALVE PACKAGE HARNESS CONNECTORS
2
1
3
X2.3
X2.1
X2.2
X2
2
1
X3.3
X3.1
X3
Figure 4.6
4013103a
6.1
6.36.2
2 3
1
ABS MODULATOR VALVE HARNESS CONNECTORMAIN APPLICATION 3-POLE TYCO CONNECTORHDSCS 4 X 2.8
6.1: GND6.2: Inlet valve6.3: Outlet valve
Surface protectionof pins: Sn
Figure 4.7
4013105a
14 5 6 7
2 3
PIN ASSIGNMENT
PIN 1 = 6.1 Ground (OV)
PIN 2 = 6.2 Voltage supply
PIN 3 = not connected
PIN 4 = not connected
PIN 5 = 6.5 PWM Signal 1
PIN 6 = not connected
PIN 7 = 6.7 PWM Signal 2
PIN CROSS SECTION ABBREVIATION FUNCTION
1 2.8 MM GND Common valve pin
2 2.8 MM Ub Voltage supply
3 not connected
4 1.5 MM not connected
5 1.5 MM PWM1 PWM signal 1
6 1.5 MM not connected
7 1.5 MM PWM2 PWM signal 2
FOOT BRAKE VALVE HARNESS CONNECTOR
4 Wiring Diagrams and Connectors
15Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 4.8
Figure 4.8
4013107a
1 234
Pin 1: GNDPin 2: Voltage SupplyPin 3: CAN HighPin 4: CAN Low
Surface protectionof pins: Sn
ELECTRONIC STABILITY CONTROL MODULEHARNESS CONNECTOR
5 SPN FMI Fault Codes
16 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
5 SPN FMI Fault CodesDTC SPN FMI TablesFigure 5.1
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
627
- 0
= P
ower
Sup
ply
- da
ta v
alid
, but
abo
ve n
orm
al
oper
atin
g ra
nge
(mos
t se
vere
leve
l)
Sys
tem
Ove
rvol
tage
(3
0A)
(30B
)A
n ov
ervo
ltage
at t
erm
inal
30A
/30B
is d
etec
ted
if th
e vo
ltage
is a
bove
16V
for
long
er th
an 1
250
ms.
The
ove
rvol
tage
con
ditio
n is
res
et if
the
volta
ge is
1V
low
er th
an 1
6V.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
the
volta
ge s
uppl
y of
the
vehi
cle.
(Is
the
batte
ry o
r vo
ltage
gov
erno
r def
ectiv
e?)
627
- 1
= P
ower
Sup
ply
- da
ta v
alid
, but
bel
ow n
orm
al
oper
atin
g ra
nge
(mos
t se
vere
leve
l)
Sys
tem
Und
ervo
ltage
(3
0A)
(30B
)A
n un
derv
olta
ge a
t ter
min
al 3
0A/3
0B is
det
ecte
d if
the
volta
ge is
bel
ow 1
1V fo
r lo
nger
than
125
0 m
s.T
he u
nder
volta
ge c
ondi
tion
is r
eset
if th
e vo
ltage
is
1V
hig
her
than
11V
.T
he u
nder
volta
ge fa
ilure
will
not
be
disp
laye
d if
vehi
cle
stan
dstil
l is
dete
cted
.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck th
e vo
ltage
sup
ply
of th
e ve
hicl
e. (I
s th
e ba
ttery
or
volta
ge g
over
nor d
efec
tive?
)
627
- 14
= P
ower
Sup
ply
- sp
ecia
l ins
truc
tions
Inte
rrup
tion
of G
roun
d (3
1B)
Thi
s fa
ilure
is d
etec
ted
afte
r 10
0 m
s if
term
inal
31
A is
con
nect
ed, b
ut te
rmin
al 3
1B is
not
co
nnec
ted.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
the
elec
tric
sup
ply
line
‘term
inal
31b
’. (I
s it
brok
en?
Is th
ere
incr
ease
d el
ectr
ical
res
ista
nce?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
627
- 17
= P
ower
Sup
ply
- da
ta v
alid
, but
bel
ow n
orm
al
oper
atin
g ra
nge
(leas
t se
vere
leve
l)
Inte
rrup
tion
of
Term
inal
(30
A)
An
inte
rrup
tion
of te
rmin
al 3
0A is
det
ecte
d if
the
volta
ge a
t ter
min
al 3
0A is
sig
nific
antly
low
er th
an
at te
rmin
al 3
0B (
filte
red
valu
e 30
A <
70%
of 3
0B)
for
mor
e th
an 1
00 m
s.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
if th
e re
leva
nt fu
se a
t ter
min
al 3
0a is
blo
wn.
• C
heck
the
elec
tric
sup
ply
line
‘term
inal
30a
’. (I
s it
brok
en?
Is th
ere
incr
ease
d el
ectr
ic r
esis
tanc
e?)
• C
heck
the
term
inal
30a
line
for
othe
r vo
ltage
dro
ps.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
627
- 18
= P
ower
Sup
ply
- da
ta v
alid
, but
bel
ow n
orm
al
oper
atin
g ra
nge
(mod
erat
ely
seve
re le
vel)
Inte
rrup
tion
of
Term
inal
(30
B)
An
inte
rrup
tion
of te
rmin
al 3
0B is
det
ecte
d if
the
volta
ge a
t ter
min
al 3
0B is
sig
nific
antly
low
er th
an
at te
rmin
al 3
0A (
filte
red
valu
e 30
B <
70%
of 3
0A)
for
mor
e th
an 1
00 m
s.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
if th
e re
leva
nt fu
se a
t ter
min
al 3
0b is
blo
wn.
• C
heck
the
elec
tric
sup
ply
line
‘term
inal
30b
’. (I
s it
brok
en?
Is th
ere
incr
ease
d el
ectr
ic r
esis
tanc
e?)
• C
heck
the
term
inal
30b
line
for
othe
r vo
ltage
dro
ps.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
629
- 9
= C
ontr
olle
r #1
-
abno
rmal
upd
ate
rate
Saf
ety
Con
trol
ler
Com
mun
icat
ion
Faul
tyT
he c
omm
unic
atio
n be
twee
n m
ain
and
safe
ty
cont
rolle
r is
faul
ty.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
629
- 11
= C
ontr
olle
r #1
-
failu
re m
ode
not i
dent
ifiab
le/
root
cau
se n
ot k
now
n
Trap
Han
dler
/Tra
p S
etT
he tr
ap h
andl
er h
as d
etec
ted
a tra
p se
t.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
629
- 12
= C
ontr
olle
r #1
-
bad
inte
llige
nt d
evic
e or
co
mpo
nent
Pic
Wdc
/MC
Err
orT
he P
ic W
atch
dog
Con
trol
ler
has
dete
cted
an
MC
er
ror.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
629
- 14
= C
ontr
olle
r #1
-
spec
ial i
nstr
uctio
nsW
atch
dog/
Res
et
Failu
reT
he W
atch
dog
has
dete
cted
a R
eset
Fai
lure
.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
639
- 12
= J
1939
Net
wor
k #1
, Prim
ary
Vehi
cle
Net
wor
k (p
revi
ousl
y S
AE
J19
39 D
ata
Link
) -
bad
inte
llige
nt d
evic
e or
com
pone
nt
Bus
OffE
rror
on
VM
M-
CA
NA
failu
re is
set
if a
Bus
Off
cond
ition
of t
he C
AN
-co
ntro
ller
(veh
icle
CA
N d
ata
link)
was
det
ecte
d.Ye
llow
Driv
er W
arni
ng,
AB
S fu
lly a
vaila
ble
• C
heck
the
wiri
ng o
f the
cha
ssis
-CA
N d
ata
conn
ectio
n an
d th
e re
latin
g el
ectr
ic c
onne
ctor
s be
twee
n th
e m
ain
EC
U a
nd th
e ot
her
chas
sis-
CA
N E
CU
s.
701
- 3
= D
iff L
ock
- vo
ltage
ab
ove
norm
al o
r sh
orte
d hi
gh
Failu
re d
etec
tion
'Sho
rtU
b' a
t Aux
iliar
y O
utpu
t (D
iff L
ock)
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013132a
5 SPN FMI Fault Codes
17Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.2
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
701
- 4
= D
iff L
ock
- vo
ltage
be
low
nor
mal
or
shor
ted
low
Failu
re d
etec
tion
'Sho
rtG
nd' a
t Aux
iliar
y O
utpu
t (D
iff L
ock)
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s.
Rem
ark:
A s
hort
ed lo
ad a
lso
lead
s to
a s
hort
to
GN
D fa
ilure
. A s
hort
ed lo
ad is
det
ecte
d:
- A
fter
200
ms
afte
r ig
nitio
n-on
and
als
o if
valv
e is
ac
tivat
ed.
- A
fter
1000
ms
if va
lve
is n
ot a
ctiv
ated
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
sho
rt
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
701
- 5
= D
iff L
ock
- cu
rren
t be
low
nor
mal
or
open
circ
uit
Failu
re d
etec
tion
'Inte
rrup
tion'
at
Aux
iliar
y O
utpu
t (D
iff
Lock
)
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t par
amet
er s
ettin
g. (
Is th
e re
leva
nt
valv
e/ac
tuat
or e
quip
ped?
)•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an
inte
rrup
tion?
)•
Che
ck r
elev
ant v
alve
/act
uato
r (I
s th
ere
an in
tern
al
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
701
- 13
= D
iff L
ock
- ou
t of
calib
ratio
nFa
ilure
det
ectio
n 'O
verE
quip
ped'
at
Aux
iliar
y O
utpu
t (D
iff
Lock
)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
702
- 3
= Tr
ansf
er C
ase
Lock
- v
olta
ge a
bove
nor
mal
or
sho
rted
hig
h
Failu
re d
etec
tion
'Sho
rtU
b' a
t Aux
iliar
y O
utpu
t (Tr
ansf
er C
ase
Lock
)
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
702
- 4
= Tr
ansf
er C
ase
Lock
- v
olta
ge b
elow
nor
mal
or
sho
rted
low
Failu
re d
etec
tion
'Sho
rtG
nd' a
t Aux
iliar
y O
utpu
t (Tr
ansf
er C
ase
Lock
)
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s.R
emar
k: A
sho
rted
load
als
o le
ads
to a
sho
rt to
G
ND
failu
re. A
sho
rted
load
is d
etec
ted:
-
Afte
r 20
0 m
s af
ter
igni
tion-
on a
nd a
lso
if va
lve
is
activ
ated
.-
Afte
r 10
00 m
s if
valv
e is
not
act
ivat
ed.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
sho
rt
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
702
- 5
= Tr
ansf
er C
ase
Lock
- c
urre
nt b
elow
nor
mal
or
ope
n ci
rcui
t
Failu
re d
etec
tion
'Inte
rrup
tion'
at
Aux
iliar
y O
utpu
t (T
rans
fer
Cas
e Lo
ck)
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t par
amet
er s
ettin
g. (
Is th
e re
leva
nt
valv
e/ac
tuat
or e
quip
ped?
)•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an
inte
rrup
tion?
)•
Che
ck r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an in
tern
al
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
702
- 13
= T
rans
fer
Cas
e Lo
ck -
out
of c
alib
ratio
nFa
ilure
det
ectio
n 'O
verE
quip
ped'
at
Aux
iliar
y O
utpu
t (T
rans
fer
Cas
e Lo
ck)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
• Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
703
- 3
= Tr
aile
r M
odul
ator
IV
- v
olta
ge a
bove
nor
mal
or
shor
ted
high
Failu
re d
etec
tion
'Sho
rtU
b' a
t Aux
iliar
y O
utpu
t (Tr
aile
r M
odul
ator
IV)
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
a sh
ort
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
4013133a
5 SPN FMI Fault Codes
18 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.3
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
703
- 4
= Tr
aile
r M
odul
ator
IV
- v
olta
ge b
elow
nor
mal
or
shor
ted
low
Failu
re d
etec
tion
‘Sho
rtG
nd’ a
t Aux
iliar
y O
utpu
t (P
ositi
on A
)
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s.R
emar
k: A
sho
rted
load
als
o le
ads
to a
sho
rt to
G
ND
failu
re. A
sho
rted
load
is d
etec
ted:
-
Afte
r 20
0 m
s af
ter
igni
tion-
on a
nd a
lso
if va
lve
is
activ
ated
.-
Afte
r 10
00 m
s if
valv
e is
not
act
ivat
ed.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
a sh
ort
circ
uit?
)•
Che
ck r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an in
tern
al s
hort
ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
703
- 5
= Tr
aile
r M
odul
ator
IV
- c
urre
nt b
elow
nor
mal
or
open
circ
uit
Failu
re d
etec
tion
'Inte
rrup
tion'
at
Aux
iliar
y O
utpu
t (T
raile
r M
odul
ator
IV)
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t par
amet
er s
ettin
g. (
Is th
e re
leva
nt
valv
e/ac
tuat
or e
quip
ped?
)•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an
inte
rrup
tion?
)•
Che
ck r
elev
ant v
alve
/act
uato
r (I
s th
ere
an in
tern
al
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
703
- 13
= T
raile
r M
odul
ator
IV
- o
ut o
f cal
ibra
tion
Failu
re d
etec
tion
'Ove
rEqu
ippe
d' a
t A
uxili
ary
Out
put
(Tra
iler
Mod
ulat
or IV
)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
704
- 3
= Tr
aile
r M
odul
ator
O
V -
vol
tage
abo
ve n
orm
al
or s
hort
ed h
igh
Failu
re d
etec
tion
'Sho
rtU
b' a
t Aux
iliar
y O
utpu
t (Tr
aile
r M
odul
ator
OV
)
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
a sh
ort
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
704
- 4
= Tr
aile
r M
odul
ator
O
V -
vol
tage
bel
ow n
orm
al
or s
hort
ed lo
w
Failu
re d
etec
tion
'Sho
rtG
nd' a
t Aux
iliar
y O
utpu
t (Tr
aile
r M
odul
ator
OV
)
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s.R
emar
k: A
sho
rted
load
als
o le
ads
to a
sho
rt to
G
ND
failu
re. A
sho
rted
load
is d
etec
ted:
-
Afte
r 20
0 m
s af
ter
igni
tion-
on a
nd a
lso
if va
lve
is
activ
ated
.-
Afte
r 10
00 m
s if
valv
e is
not
act
ivat
ed.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
a sh
ort
circ
uit?
)•
Che
ck r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an in
tern
al s
hort
ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
704
- 5
= Tr
aile
r M
odul
ator
O
V -
cur
rent
bel
ow n
orm
al
or o
pen
circ
uit
Failu
re d
etec
tion
'Inte
rrup
tion'
at
Aux
iliar
y O
utpu
t (T
raile
r M
odul
ator
OV
)
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t par
amet
er s
ettin
g. (
Is th
e re
leva
nt
valv
e/ac
tuat
or e
quip
ped?
)•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an
inte
rrup
tion?
)•
Che
ck r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an in
tern
al
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
704
- 13
= T
raile
r M
odul
ator
O
V -
out
of c
alib
ratio
nFa
ilure
det
ectio
n 'O
verE
quip
ped'
at
Aux
iliar
y O
utpu
t (T
raile
r M
odul
ator
OV
)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
705
- 3 =
3/2
Val
ve G
over
nor
- vo
ltage
abo
ve n
orm
al o
r sh
orte
d hi
gh
Failu
re d
etec
tion
'Sho
rtU
b' a
t Aux
iliar
y O
utpu
t (3/
2 Va
lve
Gov
erno
r)
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
a sh
ort
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
4013134a
5 SPN FMI Fault Codes
19Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.4
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
705
- 4 =
3/2
Val
ve G
over
nor
- vo
ltage
bel
ow n
orm
al o
r sh
orte
d lo
w
Failu
re d
etec
tion
'Sho
rtG
nd' a
t Aux
iliar
y O
utpu
t (3/
2 Va
lve
Gov
erno
r)
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s.R
emar
k: A
sho
rted
load
als
o le
ads
to a
sho
rt to
G
ND
failu
re. A
sho
rted
load
is d
etec
ted:
-
Afte
r 20
0 m
s af
ter
igni
tion-
on a
nd a
lso
if va
lve
is
activ
ated
.-
Afte
r 10
00 m
s if
valv
e is
not
act
ivat
ed.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
a sh
ort
circ
uit?
)•
Che
ck r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an in
tern
al s
hort
ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
705
- 5 =
3/2
Val
ve G
over
nor
- cu
rren
t bel
ow n
orm
al o
r op
en c
ircui
t
Failu
re d
etec
tion
'Inte
rrup
tion'
at
Aux
iliar
y O
utpu
t (3/
2 Va
lve
Gov
erno
r)
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t par
amet
er s
ettin
g. (
Is th
e re
leva
nt
valv
e/ac
tuat
or e
quip
ped?
)•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an
inte
rrup
tion?
)•
Che
ck r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an in
tern
al
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
705
- 13
= 3
/2 V
alve
G
over
nor
- ou
t of c
alib
ratio
nFa
ilure
det
ectio
n 'O
verE
quip
ped'
at
Aux
iliar
y O
utpu
t (3/
2 Va
lve
Gov
erno
r)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
706
- 3
= 3/
2 Va
lve
Reg
ener
atio
n -
volta
ge
abov
e no
rmal
or
shor
ted
high
Failu
re d
etec
tion
'Sho
rtU
b' a
t Aux
iliar
y O
utpu
t (3/
2 Va
lve
Reg
ener
atio
n)
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
a sh
ort
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
706
- 4
= 3/
2 Va
lve
Reg
ener
atio
n -
volta
ge
belo
w n
orm
al o
r sh
orte
d lo
w
Failu
re d
etec
tion
'Sho
rtG
nd' a
t Aux
iliar
y O
utpu
t (3/
2 Va
lve
Reg
ener
atio
n)
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s.R
emar
k: A
sho
rted
load
als
o le
ads
to a
sho
rt to
G
ND
failu
re. A
sho
rted
load
is d
etec
ted:
-
Afte
r 20
0 m
s af
ter
igni
tion-
on a
nd a
lso
if va
lve
is
activ
ated
.-
Afte
r 10
00 m
s if
valv
e is
not
act
ivat
ed.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
a sh
ort
circ
uit?
)•
Che
ck r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an in
tern
al s
hort
ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
706
- 5
= 3/
2 Va
lve
Reg
ener
atio
n -
curr
ent
belo
w n
orm
al o
r op
en c
ircui
t
Failu
re d
etec
tion
'Inte
rrup
tion'
at
Aux
iliar
y O
utpu
t (3/
2 Va
lve
Reg
ener
atio
n)
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t par
amet
er s
ettin
g. (
Is th
e re
leva
nt
valv
e/ac
tuat
or e
quip
ped?
)•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an
inte
rrup
tion?
)•
Che
ck r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an in
tern
al
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
706
- 13
= 3
/2 V
alve
R
egen
erat
ion
- ou
t of
calib
ratio
n
Failu
re d
etec
tion
'Ove
rEqu
ippe
d' a
t A
uxili
ary
Out
put (
3/2
Valv
e R
egen
erat
ion)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
4013135a
5 SPN FMI Fault Codes
20 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.5
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
789
- 1
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Left)
-
data
val
id, b
ut b
elow
nor
mal
op
erat
ion
rang
e (m
ost
seve
re le
vel)
AirG
ap F
ailu
re o
f W
heel
Spe
ed S
enso
r (F
ront
Axl
e Le
ft)
An
air
gap
failu
re is
det
ecte
d if
the
volta
ge
ampl
itude
is to
o lo
w (
depe
nds
on s
igna
l fr
eque
ncy)
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
789
- 3
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Left)
-
volta
ge a
bove
nor
mal
or
shor
ted
high
Sho
rt C
ircui
t to
UB
of
Whe
el S
peed
Sen
sor
(Fro
nt A
xle
Left)
A s
hort
circ
uit t
o U
B a
t the
whe
el s
peed
sen
sor
(IG
-H o
r IG
-L)
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
789
- 4
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Left)
-
volta
ge b
elow
nor
mal
or
shor
ted
low
Sho
rt C
ircui
t to
GN
D
of W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Left)
A s
hort
circ
uit t
o G
ND
at t
he w
heel
spe
ed s
enso
r (I
G-H
or
IG-L
) is
det
ecte
d 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
789
- 5
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Left)
-
curr
ent b
elow
nor
mal
or
open
circ
uit
Inte
rrup
tion
of W
heel
S
peed
Sen
sor
(Fro
nt
Axl
e Le
ft)
An
inte
rrup
tion
(ope
n lo
ad)
at th
e w
heel
spe
ed
sens
or (
IG-H
or
IG-L
) is
det
ecte
d af
ter
150
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
se
nsor
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t sen
sor.
(Is
ther
e an
in
terr
uptio
n?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
789
- 6
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Left)
-
curr
ent a
bove
nor
mal
or
grou
nded
circ
uit
Sho
rted
Coi
l of W
heel
S
peed
Sen
sor
(Fro
nt
Axl
e Le
ft)
A s
hort
ed c
oil o
f the
whe
el s
peed
sen
sor
(<30
0 oh
m)
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
789
- 7
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Left)
-
mec
hani
cal s
yste
m n
ot
resp
ondi
ng p
rope
rly o
r ou
t of
adj
ustm
ent
Pol
ewhe
el F
ailu
re o
f W
heel
Spe
ed S
enso
r (F
ront
Axl
e Le
ft)
The
whe
el s
peed
det
ectio
n sh
all b
e ab
le to
det
ect
insu
ffici
ent a
nd/o
r m
issi
ng te
eth
defin
ed w
ithin
30
00 c
ount
s of
teet
h.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
toot
h w
heel
. (Is
it d
amag
ed o
r di
rty?
)
789
- 8
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Left)
-
abno
rmal
freq
uenc
y, p
ulse
w
idth
or
perio
d
Whe
el S
peed
Sen
sor
Freq
uenc
y To
o H
igh
(Fro
nt A
xle
Left)
A fa
ilure
is d
etec
ted
if th
e w
heel
spe
ed s
igna
l fr
eque
ncy
is >
3500
Hz.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
whe
ther
ther
e ar
e in
adm
issi
ble
osci
llatio
n-ef
fect
s at
the
rele
vant
foun
datio
n br
ake.
• C
heck
whe
ther
ther
e ar
e in
adm
issi
ble
osci
llatio
n-ef
fect
s at
the
fittin
g of
the
rele
vant
whe
el s
peed
sen
sor.
• C
heck
the
isol
atio
n of
the
whe
el-s
peed
sen
sor
wiri
ng
(hig
h fr
eque
ncie
s m
ight
be
indu
ced)
.•
If th
e ot
her
effe
cts
wer
e al
read
y ch
ecke
d, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1
(668
-722
1).
789
- 11
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Left)
-
failu
re m
ode
not i
dent
ifiab
le/
root
cau
se n
ot k
now
n
Pla
usib
ility
Che
ck o
f W
heel
Spe
ed S
enso
r (F
ront
Axl
e Le
ft)
The
whe
el s
peed
det
ectio
n sh
all m
onito
r an
alog
in
put a
nd d
igita
l inp
ut o
f WA
BA
AS
IC a
nd c
ompa
re
both
sig
nals
whe
ther
or
not t
hey
are
cons
iste
ncy
(pla
usib
ility
che
ck).
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t whe
el s
peed
sen
sor.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
789
- 13
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Left)
-
out o
f cal
ibra
tion
Failu
re D
etec
tion
'Ove
rEqu
ippe
d' o
f W
heel
Spe
ed S
enso
r (F
ront
Axl
e Le
ft)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
w
heel
spe
ed s
enso
r eq
uipp
ed?)
• C
heck
wiri
ng o
f rel
evan
t sen
sor.
(Is
EC
U p
in o
pen?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
4013136a
5 SPN FMI Fault Codes
21Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.6
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
789
- 14
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Left)
-
spec
ial i
nstr
uctio
ns
Run
Out
Fai
lure
of
Whe
el S
peed
Sen
sor
(Fro
nt A
xle
Left)
A R
unO
ut fa
ilure
will
be
dete
cted
if th
e ra
tio o
f m
in/m
ax a
mpl
itude
s is
too
high
.Ye
llow
Driv
er W
arni
ng,
AB
S fu
lly a
vaila
ble
• C
heck
the
rele
vant
toot
h w
heel
. (Is
it d
amag
ed?)
• C
heck
the
rele
vant
whe
el b
earin
g. (
Is it
loos
ened
?)
790
- 1
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Rig
ht)
- da
ta v
alid
, but
bel
ow n
orm
al
oper
atio
n ra
nge
(mos
t se
vere
leve
l)
AirG
ap F
ailu
re o
f W
heel
Spe
ed S
enso
r (F
ront
Axl
e R
ight
)
An
air
gap
failu
re is
det
ecte
d if
the
volta
ge
ampl
itude
is to
o lo
w (
depe
nds
on s
igna
l fr
eque
ncy)
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
790
- 3
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Rig
ht)
- vo
ltage
abo
ve n
orm
al o
r sh
orte
d hi
gh
Sho
rt C
ircui
t to
UB
of
Whe
el S
peed
Sen
sor
(Fro
nt A
xle
Rig
ht)
A s
hort
circ
uit t
o U
B a
t the
whe
el s
peed
sen
sor
(IG
-H o
r IG
-L)
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
790
- 4
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Rig
ht)
- vo
ltage
bel
ow n
orm
al o
r sh
orte
d lo
w
Sho
rt C
ircui
t to
GN
D
of W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Rig
ht)
A s
hort
circ
uit t
o G
ND
at t
he w
heel
spe
ed s
enso
r (I
G-H
or
IG-L
) is
det
ecte
d af
ter
150
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t sen
sor.
(Is
ther
e a
shor
t circ
uit?
)•
Che
ck r
elev
ant s
enso
r. (I
s th
ere
an in
tern
al s
hort
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
790
- 5
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Rig
ht)
- cu
rren
t bel
ow n
orm
al o
r op
en c
ircui
t
Inte
rrup
tion
of W
heel
S
peed
Sen
sor
(Fro
nt
Axl
e R
ight
)
An
inte
rrup
tion
(ope
n lo
ad)
at th
e w
heel
spe
ed
sens
or (
IG-H
or
IG-L
) is
det
ecte
d af
ter
150
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
se
nsor
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t sen
sor.
(Is
ther
e an
in
terr
uptio
n?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
790
- 6
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Rig
ht)
- cu
rren
t abo
ve n
orm
al o
r gr
ound
ed c
ircui
t
Sho
rted
Coi
l of W
heel
S
peed
Sen
sor
(Fro
nt
Axl
e R
ight
)
A s
hort
ed c
oil o
f the
whe
el s
peed
sen
sor
(<30
0 oh
m)
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
790
- 7
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Rig
ht)
- m
echa
nica
l sys
tem
not
re
spon
ding
pro
perly
or
out
of a
djus
tmen
t
Pol
ewhe
el F
ailu
re o
f W
heel
Spe
ed S
enso
r (F
ront
Axl
e R
ight
)
The
whe
el s
peed
det
ectio
n sh
all b
e ab
le to
det
ect
insu
ffici
ent a
nd/o
r m
issi
ng te
eth
defin
ed w
ithin
30
00 c
ount
s of
teet
h.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
toot
h w
heel
. (Is
it d
amag
ed o
r di
rty?
)
790
- 8
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Rig
ht)
- ab
norm
al fr
eque
ncy,
pul
se
wid
th o
r pe
riod
Whe
el S
peed
Sen
sor
Freq
uenc
y To
o H
igh
(Fro
nt A
xle
Rig
ht)
A fa
ilure
is d
etec
ted
if th
e w
heel
spe
ed s
igna
l fr
eque
ncy
is >
3500
Hz.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
whe
ther
ther
e ar
e in
adm
issi
ble
osci
llatio
n-ef
fect
s at
the
rele
vant
foun
datio
n br
ake.
• C
heck
whe
ther
ther
e ar
e in
adm
issi
ble
osci
llatio
n-ef
fect
s at
the
fittin
g of
the
rele
vant
whe
el s
peed
sen
sor.
• C
heck
the
isol
atio
n of
the
whe
el-s
peed
sen
sor
wiri
ng
(hig
h fr
eque
ncie
s m
ight
be
indu
ced)
.•
If th
e ot
her
effe
cts
wer
e al
read
y ch
ecke
d, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1
(668
-722
1).
790
- 11
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Rig
ht)
- fa
ilure
mod
e no
t ide
ntifi
able
/ro
ot c
ause
not
kno
wn
Pla
usib
ility
Che
ck o
f W
heel
Spe
ed S
enso
r (F
ront
Axl
e R
ight
)
The
whe
el s
peed
det
ectio
n sh
all m
onito
r an
alog
in
put a
nd d
igita
l inp
ut o
f WA
BA
AS
IC a
nd c
ompa
re
both
sig
nals
whe
ther
or
not t
hey
are
cons
iste
ncy
(pla
usib
ility
che
ck).
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t whe
el s
peed
sen
sor.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013137a
5 SPN FMI Fault Codes
22 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.7
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
790
- 13
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Rig
ht)
- ou
t of c
alib
ratio
n
Failu
re D
etec
tion
'Ove
rEqu
ippe
d' o
f W
heel
Spe
ed S
enso
r (F
ront
Axl
e R
ight
)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
w
heel
spe
ed s
enso
r eq
uipp
ed?)
• C
heck
wiri
ng o
f rel
evan
t sen
sor.
(Is
EC
U p
in o
pen?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
790
- 14
= W
heel
Spe
ed
Sen
sor
(Fro
nt A
xle
Rig
ht)
- sp
ecia
l ins
truc
tions
Run
Out
Fai
lure
of
Whe
el S
peed
Sen
sor
(Fro
nt A
xle
Rig
ht)
A R
unO
ut fa
ilure
will
be
dete
cted
, if t
he ra
tio o
f m
in/m
ax a
mpl
itude
s is
too
high
.Ye
llow
Driv
er W
arni
ng,
AB
S fu
lly a
vaila
ble
• C
heck
the
rele
vant
toot
h w
heel
. (Is
it d
amag
ed?)
• C
heck
the
rele
vant
whe
el-b
earin
g. (
Is it
loos
ened
?)
791
- 1
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Left)
-
data
val
id, b
ut b
elow
nor
mal
op
erat
ion
rang
e (m
ost
seve
re le
vel)
AirG
ap F
ailu
re o
f W
heel
Spe
ed S
enso
r (D
rive
Axl
e Le
ft)
An
air
gap
failu
re is
det
ecte
d, if
the
volta
ge
ampl
itude
is to
o lo
w (
depe
nds
on s
igna
l fr
eque
ncy)
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
791
- 3
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Left)
-
volta
ge a
bove
nor
mal
or
shor
ted
high
Sho
rt C
ircui
t to
UB
of
Whe
el S
peed
Sen
sor
(Driv
e A
xle
Left)
A s
hort
circ
uit t
o U
B a
t the
whe
el s
peed
sen
sor
(IG
-H o
r IG
-L)
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
791
- 4
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Left)
-
volta
ge b
elow
nor
mal
or
shor
ted
low
Sho
rt C
ircui
t to
GN
D
of W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Left)
A s
hort
circ
uit t
o G
ND
at t
he w
heel
spe
ed s
enso
r (I
G-H
or
IG-L
) is
det
ecte
d 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
791
- 5
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Left)
-
curr
ent b
elow
nor
mal
or
open
circ
uit
Inte
rrup
tion
of W
heel
S
peed
Sen
sor
(Driv
e A
xle
Left)
An
inte
rrup
tion
(ope
n lo
ad)
at th
e w
heel
spe
ed
sens
or (
IG-H
or
IG-L
) is
det
ecte
d af
ter
150
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
se
nsor
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t sen
sor.
(Is
ther
e an
in
terr
uptio
n?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
791
- 6
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Left)
-
curr
ent a
bove
nor
mal
or
grou
nded
circ
uit
Sho
rted
Coi
l of W
heel
S
peed
Sen
sor
(Driv
e A
xle
Left)
A s
hort
ed c
oil o
f the
whe
el s
peed
sen
sor
(<30
0 oh
m)
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
791
- 7
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Left)
-
mec
hani
cal s
yste
m n
ot
resp
ondi
ng p
rope
rly o
r ou
t of
adj
ustm
ent
Pol
ewhe
el F
ailu
re o
f W
heel
Spe
ed S
enso
r (D
rive
Axl
e Le
ft)
The
whe
el s
peed
det
ectio
n sh
all b
e ab
le to
det
ect
insu
ffici
ent a
nd/o
r m
issi
ng te
eth
defin
ed w
ithin
30
00 c
ount
s of
teet
h.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
toot
h w
heel
. (Is
it d
amag
ed o
r di
rty?
)
791
- 8
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Left)
-
abno
rmal
freq
uenc
y, p
ulse
w
idth
or
perio
d
Whe
el S
peed
Sen
sor
Freq
uenc
y To
o H
igh
(Driv
e A
xle
Left)
A fa
ilure
is d
etec
ted
if th
e w
heel
spe
ed s
igna
l fr
eque
ncy
is >
3500
Hz.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
whe
ther
ther
e ar
e in
adm
issi
ble
osci
llatio
n-ef
fect
s at
the
rele
vant
foun
datio
n br
ake.
• C
heck
whe
ther
ther
e ar
e in
adm
issi
ble
osci
llatio
n-ef
fect
s at
the
fittin
g of
the
rele
vant
whe
el s
peed
sen
sor.
• C
heck
the
isol
atio
n of
the
whe
el-s
peed
sen
sor
wiri
ng
(hig
h fr
eque
ncie
s m
ight
be
indu
ced)
.•
If th
e ot
her
effe
cts
wer
e al
read
y ch
ecke
d, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1
(668
-722
1).
4013138a
5 SPN FMI Fault Codes
23Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.8
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
791
- 11
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Left)
-
failu
re m
ode
not i
dent
ifiab
le/
root
cau
se n
ot k
now
n
Pla
usib
ility
Che
ck o
f W
heel
Spe
ed S
enso
r (D
rive
Axl
e Le
ft)
The
whe
el s
peed
det
ectio
n sh
all m
onito
r an
alog
in
put a
nd d
igita
l inp
ut o
f WA
BA
AS
IC a
nd c
ompa
re
both
sig
nals
whe
ther
or
not t
hey
are
cons
iste
ncy
(pla
usib
ility
che
ck).
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t whe
el s
peed
sen
sor.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
791
- 13
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Left)
-
out o
f cal
ibra
tion
Failu
re D
etec
tion
'Ove
rEqu
ippe
d' o
f W
heel
Spe
ed S
enso
r (D
rive
Axl
e Le
ft)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
w
heel
spe
ed s
enso
r eq
uipp
ed?)
• C
heck
wiri
ng o
f rel
evan
t sen
sor.
(Is
EC
U p
in o
pen?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
791
- 14
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Left)
-
spec
ial i
nstr
uctio
ns
Run
Out
Fai
lure
of
Whe
el S
peed
Sen
sor
(Driv
e A
xle
Left)
A R
unO
ut fa
ilure
will
be
dete
cted
if th
e ra
tio o
f m
in/m
ax a
mpl
itude
s is
too
high
.Ye
llow
Driv
er W
arni
ng,
AB
S fu
lly a
vaila
ble
• C
heck
the
rele
vant
toot
h w
heel
. (Is
it d
amag
ed?)
• C
heck
the
rele
vant
whe
el-b
earin
g. (
Is it
loos
ened
?)
792
- 1
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Rig
ht)
- da
ta v
alid
, but
bel
ow n
orm
al
oper
atio
n ra
nge
(mos
t se
vere
leve
l)
AirG
ap F
ailu
re o
f W
heel
Spe
ed S
enso
r (D
rive
Axl
e R
ight
)
An
air
gap
failu
re is
det
ecte
d if
the
volta
ge
ampl
itude
is to
o lo
w (
depe
nds
on s
igna
l fr
eque
ncy)
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
792
- 3
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Rig
ht)
- vo
ltage
abo
ve n
orm
al o
r sh
orte
d hi
gh
Sho
rt C
ircui
t to
UB
of
Whe
el S
peed
Sen
sor
(Driv
e A
xle
Rig
ht)
A s
hort
circ
uit t
o U
B a
t the
whe
el s
peed
sen
sor
(IG
-H o
r IG
-L)
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
792
- 4
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Rig
ht)
- vo
ltage
bel
ow n
orm
al o
r sh
orte
d lo
w
Sho
rt C
ircui
t to
GN
D
of W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Rig
ht)
A s
hort
circ
uit t
o G
ND
at t
he w
heel
spe
ed s
enso
r (I
G-H
or
IG-L
) is
det
ecte
d 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
792
- 5
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Rig
ht)
- cu
rren
t bel
ow n
orm
al o
r op
en c
ircui
t
Inte
rrup
tion
of W
heel
S
peed
Sen
sor
(Driv
e A
xle
Rig
ht)
An
inte
rrup
tion
(ope
n lo
ad)
at th
e w
heel
spe
ed
sens
or (
IG-H
or
IG-L
) is
det
ecte
d af
ter
150
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
se
nsor
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t sen
sor.
(Is
ther
e an
in
terr
uptio
n?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
792
- 6
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Rig
ht)
- cu
rren
t abo
ve n
orm
al o
r gr
ound
ed c
ircui
t
Sho
rted
Coi
l of W
heel
S
peed
Sen
sor
(Driv
e A
xle
Rig
ht)
A s
hort
ed c
oil o
f the
whe
el s
peed
sen
sor
(<30
0 oh
m)
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
792
- 7
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Rig
ht)
- m
echa
nica
l sys
tem
not
re
spon
ding
pro
perly
or
out
of a
djus
tmen
t
Pol
ewhe
el F
ailu
re o
f W
heel
Spe
ed S
enso
r (D
rive
Axl
e R
ight
)
The
whe
el s
peed
det
ectio
n sh
all b
e ab
le to
det
ect
insu
ffici
ent a
nd/o
r m
issi
ng te
eth
defin
ed w
ithin
30
00 c
ount
s of
teet
h.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
toot
h w
heel
. (Is
it d
amag
ed o
r di
rty?
)
4013139a
5 SPN FMI Fault Codes
24 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.9
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
792
- 8
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Rig
ht)
- ab
norm
al fr
eque
ncy,
pul
se
wid
th o
r pe
riod
Whe
el S
peed
Sen
sor
Freq
uenc
y To
o H
igh
(Driv
e A
xle
Rig
ht)
A fa
ilure
is d
etec
ted
if th
e w
heel
spe
ed s
igna
l fr
eque
ncy
is >
3500
Hz.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
whe
ther
ther
e ar
e in
adm
issi
ble
osci
llatio
n-ef
fect
s at
the
rele
vant
foun
datio
n br
ake.
• C
heck
whe
ther
ther
e ar
e in
adm
issi
ble
osci
llatio
n-ef
fect
s at
the
fittin
g of
the
rele
vant
whe
el s
peed
sen
sor.
• C
heck
the
isol
atio
n of
the
whe
el-s
peed
sen
sor
wiri
ng
(hig
h fr
eque
ncie
s m
ight
be
indu
ced)
.•
If th
e ot
her
effe
cts
wer
e al
read
y ch
ecke
d, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1
(668
-722
1).
792
- 11
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Rig
ht)
- fa
ilure
mod
e no
t ide
ntifi
able
/ro
ot c
ause
not
kno
wn
Pla
usib
ility
Che
ck o
f W
heel
Spe
ed S
enso
r (D
rive
Axl
e R
ight
)
The
whe
el s
peed
det
ectio
n sh
all m
onito
r an
alog
in
put a
nd d
igita
l inp
ut o
f WA
BA
AS
IC a
nd c
ompa
re
both
sig
nals
whe
ther
or
not t
hey
are
cons
iste
ncy
(pla
usib
ility
che
ck).
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t whe
el s
peed
sen
sor.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
792
- 13
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Rig
ht)
- ou
t of c
alib
ratio
n
Failu
re D
etec
tion
'Ove
rEqu
ippe
d' o
f W
heel
Spe
ed S
enso
r (D
rive
Axl
e R
ight
)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
w
heel
spe
ed s
enso
r eq
uipp
ed?)
• C
heck
wiri
ng o
f rel
evan
t sen
sor.
(Is
EC
U p
in o
pen?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
792
- 14
= W
heel
Spe
ed
Sen
sor
(Driv
e A
xle
Rig
ht)
- sp
ecia
l ins
truc
tions
Run
Out
Fai
lure
of
Whe
el S
peed
Sen
sor
(Driv
e A
xle
Rig
ht)
A R
unO
ut fa
ilure
will
be
dete
cted
if th
e ra
tio o
f m
in/m
ax a
mpl
itude
s is
too
high
.Ye
llow
Driv
er W
arni
ng,
AB
S fu
lly a
vaila
ble
• C
heck
the
rele
vant
toot
h w
heel
. (Is
it d
amag
ed?)
• C
heck
the
rele
vant
whe
el-b
earin
g. (
Is it
loos
ened
?)
793
- 1
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Left)
- d
ata
valid
, but
bel
ow
norm
al o
pera
tion
rang
e (m
ost s
ever
e le
vel)
AirG
ap F
ailu
re o
f W
heel
Spe
ed S
enso
r (I
nter
med
iate
Axl
e Le
ft)
An
air
gap
failu
re is
det
ecte
d if
the
volta
ge
ampl
itude
is to
o lo
w (
depe
nds
on s
igna
l fr
eque
ncy)
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
793
- 3
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Left)
- v
olta
ge a
bove
nor
mal
or
sho
rted
hig
h
Sho
rt C
ircui
t to
UB
of
Whe
el S
peed
Sen
sor
(Int
erm
edia
te A
xle
Left)
A s
hort
circ
uit t
o U
B a
t the
whe
el s
peed
sen
sor
(IG
-H o
r IG
-L)
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
793
- 4
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Left)
- v
olta
ge b
elow
nor
mal
or
sho
rted
low
Sho
rt C
ircui
t to
GN
D
of W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te
Axl
e Le
ft)
A s
hort
circ
uit t
o G
ND
at t
he w
heel
spe
ed s
enso
r (I
G-H
or
IG-L
) is
det
ecte
d 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
793
- 5
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Left)
- c
urre
nt b
elow
nor
mal
or
ope
n ci
rcui
t
Inte
rrup
tion
of W
heel
S
peed
Sen
sor
(Int
erm
edia
te A
xle
Left)
An
inte
rrup
tion
(ope
n lo
ad)
at th
e w
heel
spe
ed
sens
or (
IG-H
or
IG-L
) is
det
ecte
d af
ter
150
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
se
nsor
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t sen
sor.
(Is
ther
e an
in
terr
uptio
n?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
793
- 6
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Left)
- c
urre
nt a
bove
nor
mal
or
gro
unde
d ci
rcui
t
Sho
rted
Coi
l of
Whe
el S
peed
Sen
sor
(Int
erm
edia
te A
xle
Left)
A s
hort
ed c
oil o
f the
whe
el s
peed
sen
sor
(<30
0 oh
m)
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
793
- 7
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Left)
- m
echa
nica
l sys
tem
no
t res
pond
ing
prop
erly
or
out o
f adj
ustm
ent
Pol
ewhe
el F
ailu
re o
f W
heel
Spe
ed S
enso
r (I
nter
med
iate
Axl
e Le
ft)
The
whe
el s
peed
det
ectio
n sh
all b
e ab
le to
det
ect
insu
ffici
ent a
nd/o
r m
issi
ng te
eth
defin
ed w
ithin
30
00 c
ount
s of
teet
h.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
toot
h w
heel
. (Is
it d
amag
ed o
r di
rty?
)
4013140a
5 SPN FMI Fault Codes
25Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.10
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
793
- 8
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Left)
- a
bnor
mal
freq
uenc
y,
puls
e w
idth
or
perio
d
Whe
el S
peed
Sen
sor
Freq
uenc
y To
o H
igh
(Int
erm
edia
te A
xle
Left)
A fa
ilure
is d
etec
ted
if th
e w
heel
spe
ed s
igna
l fr
eque
ncy
is >
3500
Hz.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
whe
ther
ther
e ar
e in
adm
issi
ble
osci
llatio
n-ef
fect
s at
the
rele
vant
foun
datio
n br
ake.
• C
heck
whe
ther
ther
e ar
e in
adm
issi
ble
osci
llatio
n-ef
fect
s at
the
fittin
g of
the
rele
vant
whe
el s
peed
sen
sor.
• C
heck
the
isol
atio
n of
the
whe
el-s
peed
sen
sor
wiri
ng
(hig
h fr
eque
ncie
s m
ight
be
indu
ced)
.•
If th
e ot
her
effe
cts
wer
e al
read
y ch
ecke
d, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1
(668
-722
1).
793
- 11
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Left)
- fa
ilure
mod
e no
t id
entifi
able
/roo
t cau
se n
ot
know
n
Pla
usib
ility
Che
ck o
f W
heel
Spe
ed S
enso
r (I
nter
med
iate
Axl
e Le
ft)
The
whe
el s
peed
det
ectio
n sh
all m
onito
r an
alog
in
put a
nd d
igita
l inp
ut o
f WA
BA
AS
IC a
nd c
ompa
re
both
sig
nals
whe
ther
or
not t
hey
are
cons
iste
ncy
(pla
usib
ility
che
ck).
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t whe
el s
peed
sen
sor.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
793
- 13
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Left)
- o
ut o
f cal
ibra
tion
Failu
re D
etec
tion
'Ove
rEqu
ippe
d' o
f W
heel
Spe
ed S
enso
r (I
nter
med
iate
Axl
e Le
ft)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
w
heel
spe
ed s
enso
r eq
uipp
ed?)
• C
heck
wiri
ng o
f rel
evan
t sen
sor.
(Is
EC
U p
in o
pen?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
793
- 14
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Left)
- s
peci
al in
stru
ctio
ns
Run
Out
Fai
lure
of
Whe
el S
peed
Sen
sor
(Int
erm
edia
te A
xle
Left)
A R
unO
ut fa
ilure
will
be
dete
cted
if th
e ra
tio o
f m
in/m
ax a
mpl
itude
s is
too
high
.Ye
llow
Driv
er W
arni
ng,
AB
S fu
lly a
vaila
ble
• C
heck
the
rele
vant
toot
h w
heel
. (Is
it d
amag
ed?)
• C
heck
the
rele
vant
whe
el-b
earin
g. (
Is it
loos
ened
?)
794
- 1
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Rig
ht)
- da
ta v
alid
, but
bel
ow
norm
al o
pera
tion
rang
e (m
ost s
ever
e le
vel)
AirG
ap F
ailu
re o
f W
heel
Spe
ed S
enso
r (I
nter
med
iate
Axl
e R
ight
)
An
air
gap
failu
re is
det
ecte
d if
the
volta
ge
ampl
itude
is to
o lo
w (
depe
nds
on s
igna
l fr
eque
ncy)
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
794
- 3
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Rig
ht)
- vo
ltage
abo
ve
norm
al o
r sh
orte
d hi
gh
Sho
rt C
ircui
t to
UB
of
Whe
el S
peed
Sen
sor
(Int
erm
edia
te A
xle
Rig
ht)
A s
hort
circ
uit t
o U
B a
t the
whe
el s
peed
sen
sor
(IG
-H o
r IG
-L)
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
794
- 4
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Rig
ht)
- vo
ltage
bel
ow
norm
al o
r sh
orte
d lo
w
Sho
rt C
ircui
t to
GN
D
of W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te
Axl
e R
ight
)
A s
hort
circ
uit t
o G
ND
at t
he w
heel
spe
ed s
enso
r (I
G-H
or
IG-L
) is
det
ecte
d 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
794
- 5
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Rig
ht)
- cu
rren
t bel
ow
norm
al o
r op
en c
ircui
t
Inte
rrup
tion
of W
heel
S
peed
Sen
sor
(Int
erm
edia
te A
xle
Rig
ht)
An
inte
rrup
tion
(ope
n lo
ad)
at th
e w
heel
spe
ed
sens
or (
IG-H
or
IG-L
) is
det
ecte
d af
ter
150
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
se
nsor
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t sen
sor.
(Is
ther
e an
in
terr
uptio
n?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
794
- 6
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Rig
ht)
- cu
rren
t abo
ve
norm
al o
r gr
ound
ed c
ircui
t
Sho
rted
Coi
l of
Whe
el S
peed
Sen
sor
(Int
erm
edia
te A
xle
Rig
ht)
A s
hort
ed c
oil o
f the
whe
el s
peed
sen
sor
(<30
0 oh
m)
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant s
enso
r. (I
s th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t sen
sor.
(Is
ther
e an
inte
rnal
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013141a
5 SPN FMI Fault Codes
26 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.11
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
794
- 7
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Rig
ht)
- m
echa
nica
l sys
tem
no
t res
pond
ing
prop
erly
or
out o
f adj
ustm
ent
Pol
ewhe
el F
ailu
re o
f W
heel
Spe
ed S
enso
r (I
nter
med
iate
Axl
e R
ight
)
The
whe
el s
peed
det
ectio
n sh
all b
e ab
le to
det
ect
insu
ffici
ent a
nd/o
r m
issi
ng te
eth
defin
ed w
ithin
30
00 c
ount
s of
teet
h.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
toot
h w
heel
. (Is
it d
amag
ed o
r di
rty?
)
794
- 8
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Rig
ht)
- ab
norm
al fr
eque
ncy,
pu
lse
wid
th o
r pe
riod
Whe
el S
peed
Sen
sor
Freq
uenc
y To
o H
igh
(Int
erm
edia
te A
xle
Rig
ht)
A fa
ilure
is d
etec
ted
if th
e w
heel
spe
ed s
igna
l fr
eque
ncy
is >
3500
Hz.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
whe
ther
ther
e ar
e in
adm
issi
ble
osci
llatio
n-ef
fect
s at
the
rele
vant
foun
datio
n br
ake.
• C
heck
whe
ther
ther
e ar
e in
adm
issi
ble
osci
llatio
n-ef
fect
s at
the
fittin
g of
the
rele
vant
whe
el s
peed
sen
sor.
• C
heck
the
isol
atio
n of
the
whe
el-s
peed
sen
sor
wiri
ng
(hig
h fr
eque
ncie
s m
ight
be
indu
ced)
.•
If th
e ot
her
effe
cts
wer
e al
read
y ch
ecke
d, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1
(668
-722
1).
794
- 11
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Rig
ht)
- fa
ilure
mod
e no
t id
entifi
able
/roo
t cau
se n
ot
know
n
Pla
usib
ility
Che
ck o
f W
heel
Spe
ed S
enso
r (I
nter
med
iate
Axl
e R
ight
)
The
whe
el s
peed
det
ectio
n sh
all m
onito
r an
alog
in
put a
nd d
igita
l inp
ut o
f WA
BA
AS
IC a
nd c
ompa
re
both
sig
nals
whe
ther
or
not t
hey
are
cons
iste
ncy
(pla
usib
ility
che
ck).
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t whe
el s
peed
sen
sor.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
794
- 13
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Rig
ht)
- ou
t of c
alib
ratio
n
Failu
re D
etec
tion
'Ove
rEqu
ippe
d' o
f W
heel
Spe
ed S
enso
r (I
nter
med
iate
Axl
e R
ight
)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
w
heel
spe
ed s
enso
r eq
uipp
ed?)
• C
heck
wiri
ng o
f rel
evan
t sen
sor.
(Is
EC
U p
in o
pen?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
794
- 14
= W
heel
Spe
ed
Sen
sor
(Int
erm
edia
te A
xle
Rig
ht)
- sp
ecia
l ins
truc
tions
Run
Out
Fai
lure
of
Whe
el S
peed
Sen
sor
(Int
erm
edia
te A
xle
Rig
ht)
A R
unO
ut fa
ilure
will
be
dete
cted
, if t
he ra
tio o
f m
in/m
ax a
mpl
itude
s is
too
high
.Ye
llow
Driv
er W
arni
ng,
AB
S fu
lly a
vaila
ble
• C
heck
the
rele
vant
toot
h w
heel
. (Is
it d
amag
ed?)
• C
heck
the
rele
vant
whe
el-b
earin
g. (
Is it
loos
ened
?)
795
- 3
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(Fro
nt
Axl
e Le
ft) -
vol
tage
abo
ve
norm
al o
r sh
orte
d hi
gh
Failu
re d
etec
tion
'Sho
rtU
b' a
t Abs
Inle
t/A
bsO
utle
t (Fr
ont A
xle
Left)
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
795
- 4
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(Fro
nt
Axl
e Le
ft) -
vol
tage
bel
ow
norm
al o
r sh
orte
d lo
w
Failu
re d
etec
tion
'Sho
rtG
nd' a
t A
bsIn
let/A
bsO
utle
t (F
ront
Axl
e Le
ft)
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s.R
emar
k: A
sho
rted
load
als
o le
ads
to a
sho
rt to
G
ND
failu
re. A
sho
rted
load
is d
etec
ted:
-
Afte
r 20
0 m
s af
ter
igni
tion-
on a
nd a
lso
if va
lve
is
activ
ated
.-
Afte
r 10
00 m
s if
valv
e is
not
act
ivat
ed.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
sho
rt
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
795
- 5
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(Fro
nt
Axl
e Le
ft) -
cur
rent
bel
ow
norm
al o
r op
en c
ircui
t
Failu
re d
etec
tion
'Inte
rrup
tion'
at
Abs
Inle
t/Abs
Out
let
(Fro
nt A
xle
Left)
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
in
terr
uptio
n?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
in
terr
uptio
n?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013142a
5 SPN FMI Fault Codes
27Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.12D
TC S
PN
FM
IFa
ilure
Det
ectio
n N
ame
Failu
re D
etec
tion
Des
crip
tion
War
ning
and
Sys
tem
R
eact
ion
Rep
air
795
- 13
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(Fro
nt
Axl
e Le
ft) -
out
of c
alib
ratio
n
Failu
re d
etec
tion
'Ove
rEqu
ippe
d' a
t A
bsIn
let/A
bsO
utle
t (F
ront
Axl
e Le
ft)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
796
- 3
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(Fro
nt
Axl
e R
ight
) -
volta
ge a
bove
no
rmal
or
shor
ted
high
Failu
re d
etec
tion
'Sho
rtU
b' a
t Abs
Inle
t/A
bsO
utle
t (Fr
ont A
xle
Rig
ht)
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
796
- 4
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(Fro
nt
Axl
e R
ight
) -
volta
ge b
elow
no
rmal
or
shor
ted
low
Failu
re d
etec
tion
'Sho
rtG
nd' a
t A
bsIn
let/A
bsO
utle
t (F
ront
Axl
e R
ight
)
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s.R
emar
k: A
sho
rted
load
als
o le
ads
to a
sho
rt to
G
ND
failu
re. A
sho
rted
load
is d
etec
ted:
-
Afte
r 20
0 m
s af
ter
igni
tion-
on a
nd a
lso
if va
lve
is
activ
ated
.-
Afte
r 10
00 m
s if
valv
e is
not
act
ivat
ed.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
sho
rt
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
796
- 5
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(Fro
nt
Axl
e R
ight
) -
curr
ent b
elow
no
rmal
or
open
circ
uit
Failu
re d
etec
tion
'Inte
rrup
tion'
at
Abs
Inle
t/Abs
Out
let
(Fro
nt A
xle
Rig
ht)
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
in
terr
uptio
n?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
in
terr
uptio
n?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
796
- 13
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(F
ront
Axl
e R
ight
) -
out o
f ca
libra
tion
Failu
re d
etec
tion
'Ove
rEqu
ippe
d' a
t A
bsIn
let/A
bsO
utle
t (F
ront
Axl
e R
ight
)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
797
- 3
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(D
rive
Axl
e Le
ft) -
vol
tage
ab
ove
norm
al o
r sh
orte
d hi
gh
Failu
re d
etec
tion
'Sho
rtU
b' a
t Abs
Inle
t/A
bsO
utle
t (D
rive
Axl
e Le
ft)
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
797
- 4
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(D
rive
Axl
e Le
ft) -
vol
tage
be
low
nor
mal
or
shor
ted
low
Failu
re d
etec
tion
'Sho
rtG
nd' a
t A
bsIn
let/A
bsO
utle
t (D
rive
Axl
e Le
ft)
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s.R
emar
k: A
sho
rted
load
als
o le
ads
to a
sho
rt to
G
ND
failu
re. A
sho
rted
load
is d
etec
ted:
-
Afte
r 20
0 m
s af
ter
igni
tion-
on a
nd a
lso
if va
lve
is
activ
ated
.-
Afte
r 10
00 m
s if
valv
e is
not
act
ivat
ed.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
sho
rt
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
797
- 5
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(D
rive
Axl
e Le
ft) -
cur
rent
be
low
nor
mal
or
open
circ
uit
Failu
re d
etec
tion
'Inte
rrup
tion'
at
Abs
Inle
t/Abs
Out
let
(Driv
e A
xle
Left)
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
in
terr
uptio
n?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
in
terr
uptio
n?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013143a
5 SPN FMI Fault Codes
28 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.13
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
797
- 13
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(D
rive
Axl
e Le
ft) -
out
of
calib
ratio
n
Failu
re d
etec
tion
'Ove
rEqu
ippe
d' a
t A
bsIn
let/A
bsO
utle
t (D
rive
Axl
e Le
ft)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
798
- 3
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(D
rive
Axl
e R
ight
) -
volta
ge
abov
e no
rmal
or
shor
ted
high
Failu
re d
etec
tion
'Sho
rtU
b' a
t Abs
Inle
t/A
bsO
utle
t (D
rive
Axl
e R
ight
)
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
798
- 4
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(D
rive
Axl
e R
ight
) -
volta
ge
belo
w n
orm
al o
r sh
orte
d lo
w
Failu
re d
etec
tion
'Sho
rtG
nd' a
t A
bsIn
let/A
bsO
utle
t (D
rive
Axl
e R
ight
)
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s. R
emar
k: A
sho
rted
load
al
so le
ads
to a
sho
rt to
GN
D fa
ilure
. A s
hort
ed
load
is d
etec
ted:
-
Afte
r 20
0 m
s af
ter
igni
tion-
on a
nd a
lso
if va
lve
is
activ
ated
.-
Afte
r 10
00 m
s if
valv
e is
not
act
ivat
ed.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
sho
rt
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
798
- 5
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(D
rive
Axl
e R
ight
) -
curr
ent
belo
w n
orm
al o
r op
en c
ircui
t
Failu
re d
etec
tion
'Inte
rrup
tion'
at
Abs
Inle
t/Abs
Out
let
(Driv
e A
xle
Rig
ht)
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
in
terr
uptio
n?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
in
terr
uptio
n?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
798
- 13
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(D
rive
Axl
e R
ight
) -
out o
f ca
libra
tion
Failu
re d
etec
tion
'Ove
rEqu
ippe
d' a
t A
bsIn
let/A
bsO
utle
t (D
rive
Axl
e R
ight
)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
799
- 3
= P
ress
ure
Mod
ulat
ion
Val
ve A
BS
(I
nter
med
iate
Axl
e Le
ft)
- vo
ltage
abo
ve n
orm
al o
r sh
orte
d hi
gh
Failu
re d
etec
tion
'Sho
rtU
b' a
t A
bsIn
let/A
bsO
utle
t (I
nter
med
iate
Axl
e Le
ft)
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
799
- 4
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(I
nter
med
iate
Axl
e Le
ft) -
vo
ltage
bel
ow n
orm
al o
r sh
orte
d lo
w
Failu
re d
etec
tion
'Sho
rtG
nd' a
t A
bsIn
let/A
bsO
utle
t (I
nter
med
iate
Axl
e Le
ft)
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s.R
emar
k: A
sho
rted
load
als
o le
ads
to a
sho
rt to
G
ND
failu
re. A
sho
rted
load
is d
etec
ted:
-
Afte
r 20
0 m
s af
ter
igni
tion-
on a
nd a
lso
if va
lve
is
activ
ated
.-
Afte
r 10
00 m
s if
valv
e is
not
act
ivat
ed.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
sho
rt
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
4013144a
5 SPN FMI Fault Codes
29Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.14
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
799
- 5
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(I
nter
med
iate
Axl
e Le
ft)
- cu
rren
t bel
ow n
orm
al o
r op
en c
ircui
t
Failu
re d
etec
tion
'Inte
rrup
tion'
at
Abs
Inle
t/Abs
Out
let
(Int
erm
edia
te A
xle
Left)
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
in
terr
uptio
n?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
in
terr
uptio
n?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
799
- 13
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(I
nter
med
iate
Axl
e Le
ft) -
out
of c
alib
ratio
n
Failu
re d
etec
tion
'Ove
rEqu
ippe
d' a
t A
bsIn
let/A
bsO
utle
t (I
nter
med
iate
Axl
e Le
ft)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
800
- 3
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(I
nter
med
iate
Axl
e R
ight
) -
volta
ge a
bove
nor
mal
or
shor
ted
high
Failu
re d
etec
tion
'Sho
rtU
b' a
t A
bsIn
let/A
bsO
utle
t (I
nter
med
iate
Axl
e R
ight
)
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
800
- 4
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(I
nter
med
iate
Axl
e R
ight
) -
volta
ge b
elow
nor
mal
or
shor
ted
low
Failu
re d
etec
tion
'Sho
rtG
nd' a
t A
bsIn
let/A
bsO
utle
t (I
nter
med
iate
Axl
e R
ight
)
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s.R
emar
k: A
sho
rted
load
als
o le
ads
to a
sho
rt to
G
ND
failu
re. A
sho
rted
load
is d
etec
ted:
-
Afte
r 20
0 m
s af
ter
igni
tion-
on a
nd a
lso
if va
lve
is
activ
ated
.-
Afte
r 10
00 m
s if
valv
e is
not
act
ivat
ed.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
sho
rt
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
800
- 5
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(I
nter
med
iate
Axl
e R
ight
) -
curr
ent b
elow
nor
mal
or
open
circ
uit
Failu
re d
etec
tion
'Inte
rrup
tion'
at
Abs
Inle
t/Abs
Out
let
(Int
erm
edia
te A
xle
Rig
ht)
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
in
terr
uptio
n?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
in
terr
uptio
n?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
800
- 13
= P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(I
nter
med
iate
Axl
e R
ight
) -
out o
f cal
ibra
tion
Failu
re d
etec
tion
'Ove
rEqu
ippe
d' a
t A
bsIn
let/A
bsO
utle
t (I
nter
med
iate
Axl
e R
ight
)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
801
- 3
= R
etar
der
Con
trol
R
elay
- v
olta
ge a
bove
no
rmal
or
shor
ted
high
Failu
re d
etec
tion
‘Sho
rtU
b’ a
t E
ndur
ance
Bra
ke
Rel
ay
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
a sh
ort
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
801
- 4
= R
etar
der
Con
trol
R
elay
- v
olta
ge b
elow
no
rmal
or
shor
ted
low
Failu
re d
etec
tion
‘Sho
rtG
nd’ a
t E
ndur
ance
Bra
ke
Rel
ay
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
a sh
ort
circ
uit?
)•
Che
ck r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an in
tern
al s
hort
ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013145a
5 SPN FMI Fault Codes
30 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.15
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
801
- 5
= R
etar
der
Con
trol
R
elay
- c
urre
nt b
elow
no
rmal
or
open
circ
uit
Failu
re d
etec
tion
‘Inte
rrup
tion’
at
End
uran
ce B
rake
R
elay
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t par
amet
er s
ettin
g. (
Is th
e re
leva
nt
valv
e/ac
tuat
or e
quip
ped?
)•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an
inte
rrup
tion?
)•
Che
ck r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an in
tern
al
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
801
- 13
= R
etar
der
Con
trol
R
elay
- o
ut o
f cal
ibra
tion
Failu
re d
etec
tion
‘Ove
rEqu
ippe
d’ a
t E
ndur
ance
Bra
ke
Rel
ay
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
810
- 2 =
Spe
ed S
igna
l Inp
ut
- da
ta e
rrat
ic, i
nter
mitt
ent o
r in
corr
ect
Che
ck b
etw
een
Spe
edom
eter
Sig
nal
and
AB
S S
peed
Thi
s er
ror
is s
et w
hen
the
calc
ulat
ed u
ncor
rect
ed
spee
dom
eter
adj
ustm
ent f
acto
r is
inva
lid o
r w
hen
inco
nsis
tenc
ies
are
dete
cted
bet
wee
n th
e se
nsed
w
heel
spe
eds
and
the
vehi
cle
spee
d fo
r th
e de
fined
tim
e pe
riods
.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck th
e ai
r ga
p of
all
whe
el s
peed
sen
sors
(m
ight
be
too
wid
e).
• C
heck
the
para
met
ers
‘whe
el d
iam
eter
’ and
‘too
th w
heel
te
eth
num
bers
’ (if
appl
icab
le).
• Is
the
spee
d si
gnal
of t
he ta
chog
raph
EC
U (
on c
hass
is
CA
N d
ata
link)
cor
rect
?•
Is th
e sp
eed
sign
al o
f the
tach
ogra
ph E
CU
(on
cha
ssis
C
AN
dat
a lin
k) n
ot a
vaila
ble?
1066
- 0
= B
rake
Sig
nal
Tran
smitt
er -
dat
a va
lid, b
ut
abov
e no
rmal
ope
ratin
g ra
nge
(mos
t sev
ere
leve
l)
Det
ectio
n of
Inva
lid
Offs
et V
alue
of B
rake
S
igna
l
The
det
ectio
n ch
ecks
if th
e re
sulti
ng P
WM
sig
nal
of th
e F
BV
(di
gita
l foo
t bra
ke m
odul
e) is
too
high
in
unb
rake
d co
nditi
on.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1066
- 2
= B
rake
Sig
nal
Tran
smitt
er -
dat
a er
ratic
, in
term
itten
t or
inco
rrec
t
Det
ectio
n of
S
igni
fican
t PW
M In
put
Sig
nal D
iffer
ence
The
det
ectio
n co
mpa
res
both
PW
M s
igna
ls
of th
e F
BV
(di
gita
l foo
t bra
ke m
odul
e). I
f an
inad
mis
sibl
e de
viat
ion
(500
µs)
is d
etec
ted,
then
th
e fa
ilure
is s
et. T
he c
heck
sha
ll on
ly b
e ex
ecut
ed:
- If
both
PW
M s
igna
ls a
re a
vaila
ble
and
- If
at le
ast o
ne s
igna
l (P
WM
1 or
PW
M2)
is b
elow
20
00 µ
sR
emar
k. D
ue to
the
FB
V c
hara
cter
istic
, thi
s ch
eck
shal
l not
be
done
if b
rake
ped
al is
str
ongl
y ap
plie
d.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1066
- 8
= B
rake
Sig
nal
Tran
smitt
er -
abn
orm
al
freq
uenc
y, p
ulse
wid
th o
r pe
riod
Diff
eren
ce o
f PW
M
Sig
nal F
requ
ency
not
4
Hz
A fa
ilure
is d
etec
ted
if th
e di
ffere
nce
of P
WM
fr
eque
ncie
s is
not
with
in v
alid
rang
e (4
Hz
nom
inal
). W
ith th
e P
WM
tole
ranc
es, t
he fr
eque
ncy
diffe
renc
e f_
PW
M2
- f_
PW
M1
shal
l be
in th
e ra
nge
1,5
Hz
. . .
12 H
z.T
he d
etec
tion
time
is 2
50 m
s.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t typ
e of
FB
V (
digi
tal f
ootb
rake
va
lve/
brak
e si
gnal
tran
smitt
er).
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1066
- 1
2 =
Bra
ke S
igna
l Tr
ansm
itter
- b
ad in
telli
gent
de
vice
or
com
pone
nt
Det
ectio
n of
Tot
al
Failu
re o
f bot
h P
WM
In
put S
igna
ls
The
det
ectio
n ch
ecks
if b
oth
PW
M s
igna
ls o
f the
F
BV
(di
gita
l foo
t bra
ke m
odul
e) a
re n
ot a
vaila
ble.
If
both
PW
M s
igna
ls a
re n
ot a
vaila
ble,
then
the
failu
re is
set
. T
he c
heck
is o
nly
activ
e if
the
Par
amet
er ‘D
river
D
eman
d S
enso
rtyp
e’ is
=2.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t par
amet
er s
ettin
g (d
river
dem
and
sens
orty
pe).
• C
heck
for
corr
ect w
iring
of F
BV
. (Is
ther
e an
in
terr
uptio
n? A
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1067
- 2
= B
rake
Sig
nal
Sen
sor
1 -
data
err
atic
, in
term
itten
t or
inco
rrec
t
Det
ectio
n of
inva
lid
duty
-cyc
le/p
ulse
-wid
th
at P
WM
sig
nal 1
A fa
ilure
is s
et a
fter
250
ms
if th
e du
ty c
ycle
of
PW
M1
is n
ot in
the
rang
e 6-
97%
(30
0 µs
-485
0 µs
).Fa
ilure
will
be
rese
t if d
uty
cycl
e is
with
in ra
nge
9,5-
94%
(47
5 µs
-470
0 µs
) ag
ain.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
4013146a
5 SPN FMI Fault Codes
31Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.16
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
1067
- 4
= B
rake
Sig
nal
Sen
sor
1 -
volta
ge b
elow
no
rmal
or
shor
ted
low
Det
ectio
n of
pe
rman
ent l
ow le
vel
at P
WM
sig
nal 1
A fa
ilure
is d
etec
ted
afte
r 20
0 m
s if
the
PW
M1
sign
al is
on
perm
anen
t low
leve
l.Ye
llow
Driv
er W
arni
ng,
AB
S fu
lly a
vaila
ble
• C
heck
for
corr
ect w
iring
of F
BV
. (Is
ther
e an
in
terr
uptio
n? A
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1067
- 5
= B
rake
Sig
nal
Sen
sor
1 -
curr
ent b
elow
no
rmal
or
open
circ
uit
Det
ectio
n of
ope
n lo
ad a
t PW
M s
igna
l 1A
failu
re is
det
ecte
d af
ter
200
ms
if th
e P
WM
1 si
gnal
has
ope
n lo
ad.
Rem
ark:
Thi
s ca
uses
a p
erm
anen
t hig
h le
vel o
f th
e si
gnal
.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t par
amet
er s
ettin
g (d
river
dem
and
sens
orty
pe).
• C
heck
for
corr
ect w
iring
of F
BV
. (Is
ther
e an
in
terr
uptio
n? A
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1067
- 5
= B
rake
Sig
nal
Sen
sor
1 -
curr
ent b
elow
no
rmal
or
open
circ
uit
Det
ectio
n of
pe
rman
ent h
igh
leve
l at
PW
M s
igna
l 1
A fa
ilure
is d
etec
ted
afte
r 20
0 m
s if
the
PW
M1
sign
al is
on
perm
anen
t hig
h le
vel.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t par
amet
er s
ettin
g (d
river
dem
and
sens
orty
pe).
• C
heck
for
corr
ect w
iring
of F
BV
. (Is
ther
e an
in
terr
uptio
n? A
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1067
- 8
= B
rake
Sig
nal
Sen
sor
1 -
abno
rmal
fr
eque
ncy,
pul
se w
idth
or
perio
d
Det
ectio
n of
inva
lid
freq
uenc
y at
PW
M
sign
al 1
A fa
ilure
is d
etec
ted
afte
r 25
0 m
s if
the
freq
uenc
y of
the
PW
M1
sign
al is
out
side
the
rang
e:-
194
Hz-
202
Hz
(old
FB
V v
ersi
on, n
omin
al
freq
uenc
y 19
8 H
z).
- 18
4 H
z-19
2 H
z (n
ew F
BV
ver
sion
, nom
inal
fr
eque
ncy
188
Hz)
.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t typ
e of
FB
V (
digi
tal f
ootb
rake
va
lve/
brak
e si
gnal
tran
smitt
er).
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1067
- 1
3 =
Bra
ke S
igna
l S
enso
r 1
- ou
t of c
alib
ratio
nFa
ilure
Det
ectio
n ‘O
verE
quip
ped’
at
PW
M s
igna
l 1
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting
(driv
er d
eman
d se
nsor
type
).•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1068
- 2
= B
rake
Sig
nal
Sen
sor
2 -
data
err
atic
, in
term
itten
t or
inco
rrec
t
Det
ectio
n of
inva
lid
duty
-cyc
le/p
ulse
-wid
th
at P
WM
sig
nal 2
A fa
ilure
is s
et a
fter
250
ms
if th
e du
ty c
ycle
of
PW
M2
is n
ot in
the
rang
e 6-
97%
(30
0 µs
-485
0 µs
).Fa
ilure
will
be
rese
t if d
uty
cycl
e is
with
in ra
nge
9,5-
94%
(47
5 µs
-470
0 µs
) ag
ain.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1068
- 4
= B
rake
Sig
nal
Sen
sor
2 -
vol
tage
bel
ow
norm
al o
r sh
orte
d lo
w
Det
ectio
n of
pe
rman
ent l
ow le
vel
at P
WM
sig
nal 2
A fa
ilure
is d
etec
ted
afte
r 20
0 m
s if
the
PW
M2
sign
al is
on
perm
anen
t low
leve
l.Ye
llow
Driv
er W
arni
ng,
AB
S fu
lly a
vaila
ble
• C
heck
for
corr
ect w
iring
of F
BV
. (Is
ther
e an
in
terr
uptio
n? A
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1068
- 5
= B
rake
Sig
nal
Sen
sor
2 -
curr
ent b
elow
no
rmal
or
open
circ
uit
Det
ectio
n of
ope
n lo
ad a
t PW
M s
igna
l 2A
failu
re is
det
ecte
d af
ter
200
ms,
the
PW
M2
sign
al h
as o
pen
load
.R
emar
k: T
his
caus
es a
per
man
ent h
igh
leve
l of
the
sign
al.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t par
amet
er s
ettin
g (d
river
dem
and
sens
orty
pe).
• C
heck
for
corr
ect w
iring
of F
BV
. (Is
ther
e an
in
terr
uptio
n? A
sho
rt c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1068
- 5
= B
rake
Sig
nal
Sen
sor
2 -
curr
ent b
elow
no
rmal
or
open
circ
uit
Det
ectio
n of
pe
rman
ent h
igh
leve
l at
PW
M s
igna
l 2
A fa
ilure
is d
etec
ted
afte
r 20
0 m
s, th
e P
WM
2 si
gnal
is o
n pe
rman
ent h
igh
leve
l.Ye
llow
Driv
er W
arni
ng,
AB
S fu
lly a
vaila
ble
• C
heck
for
corr
ect p
aram
eter
set
ting
(driv
er d
eman
d se
nsor
type
).•
Che
ck fo
r co
rrec
t wiri
ng o
f FB
V. (
Is th
ere
an
inte
rrup
tion?
A s
hort
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
4013147a
5 SPN FMI Fault Codes
32 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.17
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
1068
- 8
= B
rake
Sig
nal
Sen
sor
2 -
abno
rmal
fr
eque
ncy,
pul
se w
idth
or
perio
d
Det
ectio
n of
inva
lid
freq
uenc
y at
PW
M
sign
al 2
A fa
ilure
is d
etec
ted
afte
r 25
0 m
s if
the
freq
uenc
y of
the
PW
M2
sign
al is
out
side
the
rang
e:-
198
Hz-
206
Hz
(old
FB
V v
ersi
on, n
omin
al
freq
uenc
y 20
2 H
z).
- 18
8 H
z-19
6 H
z (n
ew F
BV
ver
sion
, nom
inal
fr
eque
ncy
192
Hz)
.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t typ
e of
FB
V (
digi
tal f
ootb
rake
va
lve/
brak
e si
gnal
tran
smitt
er).
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1068
- 1
3 =
Bra
ke S
igna
l S
enso
r 2
- ou
t of c
alib
ratio
nFa
ilure
Det
ectio
n ‘O
verE
quip
ped’
at
PW
M s
igna
l 2
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting
(driv
er d
eman
d se
nsor
type
).•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1243
- 1
2 =
AB
S F
ully
O
pera
tiona
l - b
ad in
telli
gent
de
vice
or
com
pone
nt
AB
S F
unct
ion
Is N
ot
Ful
ly O
pera
tiona
lT
his
failu
re is
dis
play
ed if
the
AB
S fu
nctio
n is
te
mpo
raril
y de
activ
ated
(pa
rtly
or
com
plet
ely)
. P
ossi
ble
caus
es a
re:
- A
fter
AB
S-d
eact
ivat
ion
durin
g dr
ivin
g, th
e A
BS
re
quire
s ce
rtai
n dr
ivin
g co
nditi
ons
to b
e m
et p
rior
to b
ecom
ing
activ
e ag
ain?
- The
AB
S fu
nctio
n w
as d
eact
ivat
ed b
y pa
ram
eter
- Im
port
ant p
aram
eter
s fo
r A
BS
-fun
ctio
n ar
e no
t av
aila
ble
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• T
his
DT
C d
oes
not r
equi
re a
ny r
epai
r. It
is o
nly
driv
er
info
rmat
ion.
1351
- 0
= A
ir C
ompr
esso
r -
data
val
id, b
ut a
bove
nor
mal
op
erat
ing
rang
e (m
ost
seve
re le
vel)
EA
PU
- C
ompr
esso
r/
Ove
rpre
ssur
e Fa
ult
The
sys
tem
pre
ssur
e is
abo
ve th
e pa
ram
etriz
ed
max
. val
ue.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck p
aram
eter
set
ting.
• C
heck
rel
atin
g pr
essu
re s
enso
rs.
• C
heck
con
trol
line
for
com
pres
sor
(blo
cked
, fau
lty, l
eaky
).•
Che
ck s
olen
oid
bloc
k.
1351
- 6
= A
ir C
ompr
esso
r -
curr
ent a
bove
nor
mal
or
grou
nded
circ
uit
EA
PU
- C
ompr
esso
r/
Com
pres
sor
Not
Off
In Id
le
The
sys
tem
pre
ssur
e ris
es e
ven
with
a s
hut o
ff co
mpr
esso
r. Fa
ilure
det
ectio
n im
med
iate
afte
r re
achi
ng
over
pres
sure
lim
it.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck c
ontr
ol li
ne fo
r co
mpr
esso
r (b
lock
ed, f
aulty
, lea
ky).
• C
heck
sol
enoi
d bl
ock.
1351
- 1
1 =
Air
Com
pres
sor
- fa
ilure
mod
e no
t id
entifi
able
/ roo
t cau
se n
ot
know
n
EA
PU
- C
ompr
esso
r/
Crit
ical
Air
Con
sum
ptio
n
The
sys
tem
pre
ssur
es b
eing
rea
ched
afte
r a
long
pe
riod
of p
umpi
ng a
re n
ot a
t an
appr
opria
te le
vel
that
allo
ws
rege
nera
tion.
Fa
ilure
det
ectio
n im
med
iate
afte
r re
achi
ng c
ritic
al
air
cons
umpt
ion
limit.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck th
e ve
hicl
e fo
r a
criti
cal a
ir co
nsum
ptio
n ->
avo
id
or s
top
usag
e of
hig
h ai
r co
nsum
ers.
• C
heck
veh
icle
for
leak
age
in v
ehic
le.
• C
heck
com
pres
sor.
• C
heck
sol
enoi
d bl
ock.
1807
- 0
= S
teer
ing
Whe
el
Ang
le -
dat
a va
lid, b
ut a
bove
no
rmal
ope
ratin
g ra
nge
(mos
t sev
ere
leve
l)
Sig
nal O
ffset
Fai
lure
of
Ste
erin
g W
heel
A
ngle
Sen
sing
The
sof
twar
e m
onito
rs th
e de
term
ined
offs
ets.
The
m
axim
um a
llow
ed o
ffset
val
ues
are
deriv
ed fr
om
the
sens
or d
ata
shee
ts.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
the
mec
hani
cal s
teer
ing
elem
ents
at t
he fr
ont a
xle
(def
ect,
twis
ted,
faul
ty a
ssem
bly,
etc
.).
• C
heck
the
mou
ntin
g po
sitio
n of
the
stee
ring
angl
e se
nsor
on
the
stee
ring
shaf
t (cr
anky
, fau
lty a
ssem
bly,
etc
.).
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1807
- 2
= S
teer
ing
Whe
el
Ang
le -
dat
a er
ratic
, in
term
itten
t or
inco
rrec
t
Ste
erw
heel
P
laus
ibili
ty C
heck
Thi
s ch
eck
mon
itors
the
stee
ring
angl
e an
d co
mpa
res
it to
oth
er s
igna
ls. I
t det
ects
dev
iatin
g si
gnal
s w
hich
are
not
pla
usib
le to
the
curr
ently
dr
iven
situ
atio
n.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
the
AB
S E
CU
con
cern
ing
corr
ect E
OL
para
met
er
(ste
erin
g ra
tio, w
heel
base
, whe
el d
iam
eter
, etc
.).
• C
heck
whe
ther
the
SA
S is
cor
rect
ly a
ssem
bled
.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1807
- 2
= S
teer
ing
Whe
el
Ang
le -
dat
a er
ratic
, in
term
itten
t or
inco
rrec
t
SA
S S
igna
l is
Not
P
laus
ible
Det
ectio
n 1)
Fai
lure
is d
etec
ted
whe
n th
e ex
tract
ed s
teer
ing
whe
el a
ngle
val
ue fr
om C
AN
m
essa
ge is
not
bet
wee
n -1
80 d
egre
e to
+18
0 de
gree
(le
ss th
an 2
8905
or
grea
ter
than
353
44).
Det
ectio
n 2)
Err
or is
det
ecte
d if
the
chan
ge in
st
eerin
g w
heel
ang
le is
mor
e th
an 3
0 de
gree
s in
5m
s.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
the
AB
S E
CU
con
cern
ing
corr
ect E
OL
para
met
er
(ste
erin
g ra
tio, w
heel
base
, whe
el d
iam
eter
, etc
.).
• C
heck
whe
ther
the
SA
S is
cor
rect
ly a
ssem
bled
.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
4013148a
5 SPN FMI Fault Codes
33Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.18
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
1807
- 7
= S
teer
ing
Whe
el
Ang
le -
mec
hani
cal s
yste
m
not r
espo
ndin
g co
rrec
tly o
r ou
t of a
djus
tmen
t
Yaw
rate
Cro
ss C
heck
(S
teer
angl
e)T
he fo
llow
ing
four
yaw
rate
s ar
e co
mpa
red:
- M
easu
red
by th
e ya
w ra
te s
enso
r-
Cal
cula
ted
by la
tera
l acc
eler
atio
n (y
r-aq
)-
Cal
cula
ted
by s
teer
ing
whe
el a
ngle
(yr
-lw)
- C
alcu
late
d by
whe
el s
peed
s fr
ont a
xle
If yr
-lw d
oes
not m
atch
with
the
rest
and
the
rest
its
elf i
s co
nsis
tent
the
yr-lw
is ra
ted
susp
icio
us
(at l
east
5 °
/s d
evia
tion)
. Afte
rwar
ds, s
peci
al
cond
ition
s w
hich
lead
to n
ot-m
atch
ing-
yaw
-ra
tes
are
dete
cted
(ba
nked
cur
ve, o
vers
teer
ing,
un
ders
teer
ing,
...)
.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
the
AB
S E
CU
con
cern
ing
corr
ect E
OL
para
met
er
(ste
erin
g ra
tio, w
heel
base
, whe
el d
iam
eter
, etc
.).
• C
heck
whe
ther
the
SA
S is
cor
rect
ly a
ssem
bled
.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1807
- 8
= S
teer
ing
Whe
el
Ang
le -
abn
orm
al fr
eque
ncy,
pu
lse
wid
th o
r pe
riod
Tim
eout
of S
AS
CA
N
Mes
sage
A ti
meo
ut o
f the
ste
erin
g an
gle
sens
or C
AN
m
essa
ge is
det
ecte
d af
ter
105
ms.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
mai
n E
CU
for
corr
ect E
OL
confi
gura
tion
(ste
erin
g w
heel
sen
sor
yes/
no).
• C
heck
the
wiri
ng b
etw
een
mai
n E
CU
and
ste
erin
g w
heel
se
nsor
.•
Che
ck th
e vo
ltage
sup
ply
of th
e st
eerin
g an
gle
sens
or.
• C
heck
the
stee
ring
whe
el s
enso
r.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1807
- 9
= S
teer
ing
Whe
el
Ang
le -
abn
orm
al u
pdat
e ra
te
Ste
erin
g W
heel
Ang
le
Min
imum
Dyn
amic
Fa
ilure
The
sig
nal o
f the
ste
erin
g w
heel
ang
le is
ex
trem
ely
cons
tant
(m
inim
um d
ynam
ic fa
ilure
).Ye
llow
ES
C W
arni
ng,
AB
S fu
lly a
vaila
ble,
E
SC
sw
itche
d of
f
• C
heck
if S
AS
is m
echa
nica
lly c
onne
cted
to th
e st
eerin
g co
lum
n. (
Doe
s it
rota
te?)
• C
heck
ste
erin
g an
gle
sens
or.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1807
- 1
2 =
Ste
erin
g W
heel
A
ngle
- b
ad in
telli
gent
de
vice
or
com
pone
nt
Err
or In
dica
tion
of
SA
S S
igna
lIf
stee
ring
whe
el a
ngle
val
ue is
bet
wee
n 0x
FE
00
and
0xF
EF
F(in
clud
ing)
or
whe
n th
e st
eerin
g w
heel
an
gle
rang
e co
unte
r eq
uals
0x3
E, t
hen
this
failu
re
will
be
dete
cted
.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1807
- 1
3 =
Ste
erin
g W
heel
A
ngle
- o
ut o
f cal
ibra
tion
Failu
re D
etec
tion
‘Ove
rEqu
ippe
d’
for
Ste
erin
g A
ngle
S
enso
r
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting
(SA
S y
es/n
o).
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1807
- 1
4 =
Ste
erin
g W
heel
A
ngle
- s
peci
al in
stru
ctio
nsC
onst
ant M
essa
ge
Cou
nter
of S
AS
CA
N
Mes
sage
Whe
n m
essa
ge c
ount
er v
alue
rec
eive
d fr
om S
AS
C
AN
mes
sage
rem
ains
con
stan
t for
180
ms,
then
m
essa
ge c
ount
er fa
ilure
will
be
dete
cted
.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
the
mai
n E
CU
con
cern
ing
corr
ect E
OL
para
met
er
(ste
erin
g w
heel
sen
sor
type
).•
Che
ck w
heth
er th
e co
rrec
t SA
S ty
pe is
ass
embl
ed a
t the
ve
hicl
e.•
Che
ck th
e st
eerin
g an
gle
sens
or/r
epla
ce th
e st
eerin
g an
gle
sens
or.
• C
heck
the
mai
n E
CU
.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1807
- 1
7 =
Ste
erin
g W
heel
A
ngle
- d
ata
valid
, but
bel
ow
norm
al o
pera
ting
rang
e (le
ast s
ever
e le
vel)
Sig
nal N
ot A
vaila
ble
Indi
catio
n of
SA
S
Sig
nal
If st
eerin
g w
heel
ang
le v
alue
is b
etw
een
0xF
F00
and
0xF
FF
F (
incl
udin
g) o
r w
hen
the
stee
ring
whe
el a
ngle
rang
e co
unte
r eq
uals
0x3
F
cont
inuo
usly
for
1 se
cond
, the
n th
is fa
ilure
will
be
dete
cted
.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
if s
teer
ing
angl
e se
nsor
is c
onfig
ured
and
ca
libra
ted
corr
ectly
.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1807
- 1
8 =
Ste
erin
g W
heel
A
ngle
- d
ata
valid
, but
bel
ow
norm
al o
pera
ting
rang
e (m
oder
atel
y se
vere
leve
l)
Neu
tral V
alue
D
etec
tion
(Ste
eran
gle)
A fa
ilure
is d
etec
ted
if th
e ta
rget
yaw
rate
(fr
om
SA
S)
stay
s ne
ar z
ero
and
the
actu
al s
enso
r ya
w
rate
and
the
yaw
rate
cal
cula
ted
from
the
late
ral
acce
lera
tion
are
abov
e th
e de
tect
ion
thre
shol
d (e
.g. 5
ø/s
).
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
the
mec
hani
cal c
onne
ctio
n be
twee
n st
eerin
g an
gle
sens
or a
nd s
teer
ing
shaf
t (lo
osen
ed?)
.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
4013149a
5 SPN FMI Fault Codes
34 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.19
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
1807
- 1
9 =
Ste
erin
g W
heel
A
ngle
- r
ecei
ved
netw
ork
data
in e
rror
Inva
lid C
heck
sum
of
SA
S C
AN
Mes
sage
Thi
s fa
ilure
is p
rodu
ced
whe
n th
e ch
ecks
um
valu
e re
ceiv
ed in
ste
erin
g w
heel
ang
le s
enso
r C
AN
mes
sage
doe
s no
t mat
ch w
ith c
heck
sum
ca
lcul
ated
from
dat
a co
nten
t of t
he C
AN
mes
sage
.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
the
mai
n E
CU
con
cern
ing
corr
ect E
OL
para
met
er
(ste
erin
g w
heel
sen
sor
type
).•
Che
ck w
heth
er th
e co
rrec
t SA
S ty
pe is
ass
embl
ed a
t the
ve
hicl
e.•
Che
ck th
e st
eerin
g an
gle
sens
or a
nd m
ain
EC
U.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1807
- 3
1 =
Ste
erin
g W
heel
A
ngle
- c
ondi
tion
exis
tsIn
valid
Sta
tus
of S
AS
S
igna
lT
his
failu
re is
pro
duce
d w
hen
the
stee
ring
whe
el
angl
e se
nsor
sen
ds ‘n
ot c
alib
rate
d st
ate’
or ‘
not
activ
e st
ate’
.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
if s
teer
ing
angl
e se
nsor
is c
onfig
ured
and
ca
libra
ted
corr
ectly
.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1808
- 1
= Y
aw R
ate
- da
ta
valid
, but
bel
ow n
orm
al
oper
atin
g ra
nge
(mos
t se
vere
leve
l)
Min
imum
Dyn
amic
Fa
ilure
/Yaw
Rat
eT
his
failu
re in
dica
tes
an a
ctiv
e m
inim
al d
ynam
ic
failu
re fo
r th
e ya
w ra
te s
enso
r.T
his
failu
re is
set
whe
n th
e er
ror
flag
insi
de th
e E
SC
1 m
essa
ge is
set
(E
SC
1: B
yte
3 B
it 1)
for
a ce
rtai
n tim
e.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1808
- 2
= Y
aw R
ate
- da
ta
erra
tic, i
nter
mitt
ent o
r in
corr
ect
Ran
ge C
heck
Fai
lure
of
Yaw
Rat
e S
enso
r S
igna
l
A fa
ilure
is d
etec
ted
if th
e ya
w-r
ate
exce
eds
a ce
rtai
n m
axim
um v
alue
.Ye
llow
ES
C W
arni
ng,
AB
S fu
lly a
vaila
ble,
E
SC
sw
itche
d of
f
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1808
- 3
= Y
aw R
ate
- vo
ltage
abo
ve n
orm
al o
r sh
orte
d hi
gh
Drif
t Fai
lure
of Y
aw
Rat
e S
enso
r S
igna
l (S
tand
still
)
The
yaw
rate
sig
nal d
rifts
in s
tand
still
mor
e th
an a
pe
rmis
sibl
e lim
it.Ye
llow
ES
C W
arni
ng,
AB
S fu
lly a
vaila
ble,
E
SC
sw
itche
d of
f
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1808
- 5
= Y
aw R
ate
- cu
rren
t bel
ow n
orm
al o
r op
en c
ircui
t
Offs
et F
ailu
re o
f Yaw
R
ate
Sen
sor
Sig
nal
The
sof
twar
e m
onito
rs th
e de
term
ined
offs
ets.
The
m
axim
um a
llow
ed o
ffset
val
ues
are
deriv
ed fr
om
the
sens
or d
ata
shee
ts.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1808
- 6
= Y
aw R
ate
- cu
rren
t abo
ve n
orm
al o
r gr
ound
ed c
ircui
t
Drif
t Fai
lure
of Y
aw
Rat
e S
enso
r S
igna
l (D
rivin
g)
The
yaw
rate
sig
nal d
rifts
dur
ing
driv
ing
mor
e th
an
a pe
rmis
sibl
e lim
it.Ye
llow
ES
C W
arni
ng,
AB
S fu
lly a
vaila
ble,
E
SC
sw
itche
d of
f
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1808
- 7
= Y
aw R
ate
- m
echa
nica
l sys
tem
not
re
spon
ding
cor
rect
ly o
r ou
t of
adj
ustm
ent
Faul
ty S
ign
betw
een
Yaw
Rat
e an
d S
teer
angl
e
A fa
ilure
is s
et if
the
sign
bet
wee
n th
e ta
rget
yaw
ra
te (
stee
ring
whe
el s
enso
r) a
nd th
e se
nsor
yaw
ra
te is
faul
ty.
Prin
cipl
e: C
alcu
late
the
ratio
bet
wee
n th
e ta
rget
ya
w ra
te a
nd th
e se
nsor
yaw
rate
. If t
he ra
tio is
ne
gativ
e (-
0,6
up to
-1,
4) fo
r bo
th tu
rnin
g di
rect
ion
a fa
ilure
sha
ll be
indi
cate
d.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
EO
L pa
ram
eter
s fo
r m
ount
ing
dire
ctio
n (E
SC
m
odul
e).
• C
heck
for
corr
ect m
ount
ing
dire
ctio
n (a
ssem
bly
posi
tion)
of
ES
C m
odul
e.•
Che
ck fo
r co
rrec
t mou
ntin
g di
rect
ion
of s
teer
ing
angl
e se
nsor
.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1808
- 1
1 =
Yaw
Rat
e -
failu
re m
ode
not i
dent
ifiab
le/
root
cau
se n
ot k
now
n
Pla
usib
ility
Che
ck
of Y
aw R
ate
Sig
nal
(Stra
ight
Driv
ing)
Pla
usib
ility
che
ck o
f the
act
ual y
aw ra
te w
hile
dr
ivin
g st
raig
ht u
nder
sta
ble
cond
ition
s. If
the
vehi
cle
is d
rivin
g st
raig
ht u
nder
sta
ble
cond
ition
an
d th
e ac
tual
yaw
rate
is h
ighe
r th
an th
resh
old
(e.g
. 6 *
pi /
180)
, an
erro
r is
set
.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
for
corr
ect a
ssem
bly
posi
tion
of E
SC
mod
ule.
• C
heck
ES
C m
odul
e.•
Che
ck s
teer
ing
angl
e se
nsor
.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1808
- 1
2 =
Yaw
Rat
e -
bad
inte
llige
nt d
evic
e or
co
mpo
nent
ES
C M
odul
e Fa
ilure
F
lag
‘Yaw
Rat
e S
enso
r’
Thi
s fa
ilure
indi
cate
s th
at th
e ya
w ra
te s
enso
r in
side
the
ES
C in
dica
tes
an e
rror
.T
his
failu
re is
set
whe
n th
e er
ror
indi
catio
n fla
g in
side
the
ES
C1
mes
sage
is s
et (
ES
C1
Mul
tiple
xer
= 0x
0 (M
ultip
lexe
r B
yte
0 B
it 4-
7) a
nd B
yte
1 B
it 1
is s
et to
one
).
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013150a
5 SPN FMI Fault Codes
35Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.20
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
1808
- 1
3 =
Yaw
Rat
e -
out
of c
alib
ratio
nS
calin
g Fa
ilure
D
etec
tion
(Yaw
Rat
e an
d S
teer
angl
e)
Det
ectio
n of
sca
ling
failu
res
betw
een
the
targ
et
yaw
rate
and
the
actu
al y
aw ra
te.
The
ratio
bet
wee
n th
e ta
rget
yaw
rate
and
the
actu
al y
aw ra
te h
as to
be
outs
ide
the
thre
shol
d ra
nge
(0.7
to 1
.3)
and
not i
n th
e ne
gativ
e ra
nge
-0,7
to -
1,3,
and
the
trus
t cou
nter
val
ue h
as to
be
set t
o ze
ro.
The
trus
t cou
nter
will
be
incr
emen
ted
to a
m
axim
um o
f 60
seco
nds
if th
e se
nsor
sig
nal i
s in
side
the
thre
shol
d ra
nge.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
EO
L pa
ram
eter
for
mou
ntin
g-di
rect
ion
of E
SC
m
odul
e.•
Che
ck fo
r co
rrec
t mou
ntin
g di
rect
ion
(ass
embl
y po
sitio
n)
of E
SC
mod
ule.
• C
heck
the
ES
C m
odul
e.•
Che
ck th
e st
eerin
g an
gle
sens
or.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1808
- 1
4 =
Yaw
Rat
e -
spec
ial i
nstr
uctio
nsYa
w R
ate
Cro
ss
Che
ck (
Yaw
Rat
e S
igna
l)
The
follo
win
g fo
ur y
aw ra
tes
are
com
pare
d:
- M
easu
red
by th
e ya
w ra
te s
enso
r-
Cal
cula
ted
by la
tera
l acc
eler
atio
n (y
r-aq
)-
Cal
cula
ted
by s
teer
ing
whe
el a
ngle
- C
alcu
late
d by
whe
el s
peed
s fr
ont a
xle
If yr
doe
s no
t mat
ch w
ith th
e re
st a
nd th
e re
st it
self
is c
onsi
sten
t, th
e yr
is ra
ted
susp
icio
us (
at le
ast
5°/s
dev
iatio
n). A
fterw
ards
, spe
cial
con
ditio
ns
whi
ch le
ad to
not
-mat
chin
g-ya
w-r
ates
are
det
ecte
d (b
anke
d cu
rve,
ove
rste
erin
g, u
nder
stee
ring,
...)
.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
the
AB
S E
CU
con
cern
ing
corr
ect E
OL
para
met
er
(ste
erin
g ra
tio, w
heel
base
, whe
el d
iam
eter
, etc
.).
• C
heck
whe
ther
the
ES
C m
odul
e is
ass
embl
ed in
cor
rect
po
sitio
n.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1808
- 1
7 =
Yaw
Rat
e -
data
va
lid, b
ut b
elow
nor
mal
op
erat
ing
rang
e (le
ast
seve
re le
vel)
Neu
tral V
alue
D
etec
tion
(Yaw
Rat
e)T
he a
ctua
l yaw
rate
(fr
om th
e ya
w ra
te s
enso
r)
does
not
follo
w th
e ta
rget
yaw
rate
and
the
yaw
ra
te d
eriv
ed fr
om th
e la
tera
l acc
eler
atio
n.A
ctua
l yaw
rate
is n
ear
zero
and
diff
eren
ce
betw
een
the
actu
al y
aw ra
te a
nd th
e ta
rget
yaw
ra
te a
nd y
aw ra
te fr
om la
tera
l acc
eler
atio
n is
hi
gher
than
the
thre
shol
d (e
.g. 5
ø/s
).
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
EO
L pa
ram
eter
for
mou
ntin
g di
rect
ion
of E
SC
m
odul
e.•
Che
ck fo
r co
rrec
t mou
ntin
g di
rect
ion
(ass
embl
y po
sitio
n)
of E
SC
mod
ule.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1808
- 1
9 =
Yaw
Rat
e -
rece
ived
net
wor
k da
ta in
er
ror
Pla
usib
ility
Che
ck
of Y
aw R
ate
Sig
nal
(Cur
ve)
Pla
usib
ility
che
ck w
hile
driv
ing
a cu
rve.
The
act
ual
yaw
rate
will
be
com
pare
d to
the
targ
et y
aw ra
te,
yaw
rate
from
late
ral a
ccel
erat
ion
and
the
yaw
rate
fr
om th
e fr
ont a
xle
whe
el s
peed
s.T
his
func
tiona
lity
is d
ivid
ed in
to tw
o pa
rts.
D
etec
tion
unde
r st
able
con
ditio
ns a
nd u
nder
un
stab
le c
ondi
tions
.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
the
ES
C m
odul
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1808
- 2
2 =
Yaw
Rat
e -
rese
rved
(22
)P
laus
ibili
ty b
etw
een
Fron
t Axl
e S
peed
an
d Ya
w R
ate
Sen
sor
Sig
nal
The
failu
re is
det
ecte
d if
the
yaw
rate
(ca
lcul
ated
by
the
fron
t whe
el s
peed
sig
nals
) di
ffers
from
the
mea
sure
d ya
w ra
te.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• W
hen
tires
wer
e ch
ange
d, th
e sp
eedo
met
er m
ust b
e ca
libra
ted
to th
e ne
w ti
re d
imen
sion
s. -
Che
ck th
e T
CO
sig
nal (
func
tion
of s
peed
omet
er).
-Is
the
TC
O s
peed
sig
nal c
orre
ctly
cal
ibra
ted?
-C
heck
the
vehi
cle-
spec
ific
para
met
ers
of th
e sp
eedo
met
er.
• T
he A
BS
EC
U m
ust h
ave
corr
ect p
aram
eter
s. -
Che
ck th
e pa
ram
eter
s in
the
AB
S E
CU
(sp
eedo
met
er
sign
al s
ourc
e, ti
re d
imen
sion
s).
• T
he E
SC
func
tion
requ
ires
a co
rrec
t ass
embl
y of
the
ES
C m
odul
e. -
Che
ck th
e as
sem
bly
posi
tion
of th
e E
SC
mod
ule
(mec
hani
cal h
ardw
are
codi
ng b
etw
een
ES
C m
odul
e an
d ve
hicl
e-fra
me)
. -
Che
ck th
e co
rrec
t ele
ctric
con
nect
ion
of th
e E
SC
m
odul
e. -
Che
ck th
e fit
ting
of th
e E
SC
mod
ule.
4013151a
5 SPN FMI Fault Codes
36 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.21
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
1809
- 1
= L
ater
al
Acc
eler
atio
n -
data
val
id,
but b
elow
nor
mal
ope
ratin
g ra
nge
(mos
t sev
ere
leve
l)
Min
imum
Dyn
amic
Fa
ilure
/Lat
eral
A
ccel
erat
ion
Thi
s fa
ilure
indi
cate
s an
act
ive
min
imal
dyn
amic
fa
ilure
for
the
late
ral a
ccel
erat
ion
sens
or.
Thi
s fa
ilure
is s
et w
hen
the
erro
r fla
g in
side
the
ES
C1
mes
sage
is s
et (
ES
C1:
Byt
e 3
Bit0
) fo
r a
cert
ain
time.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1809
- 2
= L
ater
al
Acc
eler
atio
n -
data
err
atic
, in
term
itten
t or
inco
rrec
t
Ran
ge C
heck
of
Lat
eral
- an
d Lo
ngitu
dina
l A
ccel
erat
ion
Ran
ge c
heck
for
the
late
ral a
nd lo
ngitu
dina
l ac
cele
ratio
n va
lue.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
EO
L pa
ram
eter
for
mou
ntin
g di
rect
ion
of E
SC
m
odul
e.•
Che
ck fo
r co
rrec
t mou
ntin
g di
rect
ion
(ass
embl
y po
sitio
n)
of E
SC
mod
ule.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1809
- 7
= L
ater
al
Acc
eler
atio
n -
mec
hani
cal
syst
em n
ot r
espo
ndin
g co
rrec
tly o
r ou
t of
adju
stm
ent
Faul
ty S
ign
betw
een
Late
ral A
ccel
erat
ion
and
Ste
eran
gle
Det
ectio
n of
sig
n fa
ilure
s be
twee
n th
e ta
rget
ya
w ra
te (
stee
ring
whe
el s
enso
r) a
nd th
e la
tera
l ac
cele
ratio
n.
Prin
cipl
e: C
alcu
late
the
ratio
bet
wee
n th
e ta
rget
ya
w ra
te a
nd th
e ya
w ra
te fr
om th
e la
tera
l ac
cele
ratio
n. If
the
ratio
is n
egat
ive
for
both
turn
ing
dire
ctio
n, a
failu
re s
hall
be in
dica
ted.
Set
Con
ditio
n: T
he ra
tio is
neg
ativ
e an
d in
side
the
ratio
tole
ranc
e th
resh
old
(-0,
6 up
to -
1,4)
.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
EO
L pa
ram
eter
s fo
r m
ount
ing
dire
ctio
n (E
SC
m
odul
e).
• C
heck
for
corr
ect m
ount
ing
dire
ctio
n (a
ssem
bly
posi
tion)
of
ES
C m
odul
e.•
Che
ck fo
r co
rrec
t mou
ntin
g di
rect
ion
of s
teer
ing
angl
e se
nsor
.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1809
- 1
2 =
Late
ral
Acc
eler
atio
n -
bad
inte
llige
nt
devi
ce o
r co
mpo
nent
ES
C M
odul
e Fa
ilure
Fla
g ‘L
ater
al
Acc
eler
atio
n S
enso
r’
Thi
s fa
ilure
indi
cate
s th
at th
e la
tera
l acc
eler
atio
n se
nsor
insi
de th
e E
SC
mod
ule
indi
cate
s an
err
or.
Thi
s fa
ilure
is s
et w
hen
the
erro
r in
dica
tion
flag
insi
de th
e E
SC
1 m
essa
ge is
set
(E
SC
1 M
ultip
lexe
r =
0x0
(Mul
tiple
xer
Byt
e 0
Bit
4 -
7) a
nd B
yte
1 B
it 0
is s
et to
one
).
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1809
- 1
4 =
Late
ral
Acc
eler
atio
n -
spec
ial
inst
ruct
ions
Yaw
Rat
e C
ross
C
heck
(La
tera
l A
ccel
erat
ion)
The
follo
win
g fo
ur y
aw ra
tes
are
com
pare
d:-
Mea
sure
d by
the
yaw
rate
sen
sor
- C
alcu
late
d by
late
ral a
ccel
erat
ion
(yr-
aq)
- C
alcu
late
d by
ste
erin
g w
heel
ang
le-
Cal
cula
ted
by w
heel
spe
eds
fron
t axl
eare
co
mpa
red
If yr
-aq
does
not
mat
ch w
ith th
e re
st a
nd th
e re
st
itsel
f is
cons
iste
nt, t
he y
r-aq
is ra
ted
susp
icio
us
(at l
east
5 °
/s d
evia
tion)
. Afte
rwar
ds, s
peci
al
cond
ition
s w
hich
lead
to n
ot-m
atch
ing-
yaw
-ra
tes
are
dete
cted
(ba
nked
cur
ve, o
vers
teer
ing,
un
ders
teer
ing,
...)
.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
the
AB
S E
CU
con
cern
ing
corr
ect E
OL
para
met
er
(ste
erin
g ra
tio, w
heel
base
, whe
el d
iam
eter
, etc
.).
• C
heck
whe
ther
the
ES
C m
odul
e is
ass
embl
ed in
cor
rect
po
sitio
n•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1809
- 1
5 =
Late
ral
Acc
eler
atio
n -
data
val
id,
but a
bove
nor
mal
ope
ratin
g ra
nge
(leas
t sev
ere
leve
l)
Sig
nal O
ffset
Fai
lure
of
Lat
eral
Acc
eler
atio
n S
ensi
ng
The
offs
et v
alue
of t
he s
enso
r is
eva
luat
ed
perm
anen
tly d
urin
g dr
ivin
g st
raig
ht-o
n. T
his
offs
et v
alue
is u
sed
for
a co
rrec
tion
of th
e la
tera
l ac
cele
ratio
n in
form
atio
n.A
n of
fset
failu
re is
det
ecte
d if
the
diffe
renc
e be
twee
n se
nsor
sig
nal a
nd la
tera
l acc
eler
atio
n ca
lcul
ated
by
yaw
rate
exc
eeds
1,7
m/s
². T
he
failu
re d
etec
tion
is o
nly
activ
e if
vehi
cle
spee
d is
hig
her
than
10
km/h
and
if v
ehic
le is
driv
ing
stra
ight
-on.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
EO
L pa
ram
eter
for
mou
ntin
g di
rect
ion
of E
SC
m
odul
e.•
Che
ck fo
r co
rrec
t mou
ntin
g di
rect
ion
(ass
embl
y po
sitio
n)
of E
SC
mod
ule.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1809
- 1
7 =
Late
ral
Acc
eler
atio
n -
data
val
id,
but b
elow
nor
mal
ope
ratin
g ra
nge
(leas
t sev
ere
leve
l)
Neu
tral V
alue
D
etec
tion
(Lat
eral
A
ccel
erat
ion)
The
yaw
rate
cal
cula
ted
from
the
late
ral
acce
lera
tion
does
not
follo
w th
e ac
tual
yaw
rate
an
d th
e ta
rget
yaw
rate
.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
EO
L pa
ram
eter
for
mou
ntin
g di
rect
ion
of E
SC
m
odul
e.•
Che
ck fo
r co
rrec
t mou
ntin
g di
rect
ion
(ass
embl
y po
sitio
n)
of E
SC
mod
ule.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013152a
5 SPN FMI Fault Codes
37Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.22
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
1809
- 2
0 =
Late
ral
Acc
eler
atio
n -
data
drif
ted
high
Sig
nal D
rift F
ailu
re o
f La
tera
l Acc
eler
atio
n S
ensi
ng
The
late
ral a
ccel
erat
ion
sign
al w
as d
riftin
g ou
tsid
e th
e va
lid ra
nge.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1810
- 0
= L
ongi
tudi
nal
Acc
eler
atio
n -
data
val
id,
but a
bove
nor
mal
ope
ratin
g ra
nge
(mos
t sev
ere
leve
l)
Offs
et F
ailu
re
of L
ongi
tudi
nal
Acc
eler
atio
n S
enso
r S
igna
l
Thi
s fa
ilure
indi
cate
s a
faul
ty o
ffset
val
ue o
f the
lo
ngitu
dina
l acc
eler
atio
n se
nsor
.Ye
llow
ES
C W
arni
ng,
AB
S fu
lly a
vaila
ble,
E
SC
sw
itche
d of
f
• C
heck
EO
L pa
ram
eter
for
mou
ntin
g di
rect
ion
of E
SC
m
odul
e.•
Che
ck fo
r co
rrec
t mou
ntin
g di
rect
ion
(ass
embl
y po
sitio
n)
of E
SC
mod
ule.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1810
- 1
= L
ongi
tudi
nal
Acc
eler
atio
n -
data
val
id,
but b
elow
nor
mal
ope
ratin
g ra
nge
(mos
t sev
ere
leve
l)
Min
imum
Dyn
amic
Fa
ilure
/Lon
gitu
dina
l A
ccel
erat
ion
Thi
s fa
ilure
indi
cate
s an
act
ive
min
imal
dyn
amic
fa
ilure
for
the
long
itudi
nal a
ccel
erat
ion
sens
or.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
1810
- 2
= L
ongi
tudi
nal
Acc
eler
atio
n -
data
err
atic
, in
term
itten
t or
inco
rrec
t
Pla
usib
ility
Fai
lure
of
Lon
gitu
dina
l A
ccel
erat
ion
Sen
sor
Sig
nal
Thi
s fa
ilure
indi
cate
s a
plau
sibi
lity
failu
re o
f the
lo
ngitu
dina
l acc
eler
atio
n se
nsor
(e.
g. c
hara
cter
istic
no
t cor
rect
).
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
EO
L pa
ram
eter
for
mou
ntin
g di
rect
ion
of E
SC
m
odul
e.•
Che
ck fo
r co
rrec
t mou
ntin
g di
rect
ion
(ass
embl
y po
sitio
n)
of E
SC
mod
ule.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1810
- 7
= L
ongi
tudi
nal
Acc
eler
atio
n -
mec
hani
cal
syst
em n
ot r
espo
ndin
g co
rrec
tly o
r ou
t of
adju
stm
ent
Ass
embl
y Fa
ilure
of
Lon
gitu
dina
l A
ccel
erat
ion
Sen
sor
Sig
nal
Thi
s fa
ilure
indi
cate
s a
faul
ty a
ssem
bly
of th
e lo
ngitu
dina
l acc
eler
atio
n se
nsor
(i.e
. mou
ntin
g di
rect
ion
not c
orre
ct).
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
EO
L pa
ram
eter
for
mou
ntin
g di
rect
ion
of E
SC
m
odul
e.•
Che
ck fo
r co
rrec
t mou
ntin
g di
rect
ion
(ass
embl
y po
sitio
n)
of E
SC
mod
ule.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
1810
- 1
2 =
Long
itudi
nal
Acc
eler
atio
n -
bad
inte
llige
nt
devi
ce o
r co
mpo
nent
ES
C M
odul
e Fa
ilure
F
lag
‘Lon
gitu
dina
l A
ccel
erat
ion
Sen
sor’
Thi
s fa
ilure
indi
cate
s th
at th
e lo
ngitu
dina
l ac
cele
ratio
n se
nsor
insi
de th
e E
SC
mod
ule
indi
cate
s an
err
or.
Thi
s fa
ilure
is s
et w
hen
the
erro
r in
dica
tion
flag
insi
de th
e E
SC
2 m
essa
ge is
set
(E
SC
2 M
ultip
lexe
r =
0x0
(Mul
tiple
xer
Byt
e 0
Bit
4 -
7) a
nd B
yte
1 B
it 0
is s
et to
one
).
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
3509
- 3
= S
enso
r su
pply
-
volta
ge a
bove
nor
mal
or
shor
ted
high
Failu
re d
etec
tion
‘Sho
rtU
b’ a
t S
enso
rSup
ply
A p
erm
anen
t hig
h vo
ltage
leve
l (sh
orte
d to
pe
rman
ent U
B)
at th
e se
nsor
-sup
ply
is d
etec
ted
afte
r ig
nitio
n-on
.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck w
iring
of r
elev
ant s
enso
rs. (
Is th
ere
a sh
ort c
ircui
t to
UB
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
3509
- 4
= S
enso
r su
pply
-
volta
ge b
elow
nor
mal
or
shor
ted
low
Failu
re d
etec
tion
‘Sho
rtG
nd’ a
t S
enso
rSup
ply
A fa
ilure
is d
etec
ted
afte
r 20
0 m
s if
the
sens
or
supp
ly is
too
low
(sh
orte
d to
GN
D).
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck w
iring
of r
elev
ant s
enso
rs. (
Is th
ere
a sh
ort c
ircui
t to
GN
D?)
• C
heck
rel
evan
t sen
sors
. (Is
ther
e an
inte
rnal
sho
rt c
ircui
t to
GN
D?
Ele
ctric
cur
rent
too
high
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5202
10 -
8 =
ES
C-m
odul
e -
abno
rmal
freq
uenc
y, p
ulse
w
idth
or
perio
d
ES
C M
odul
e C
AN
M
essa
ges/
Tim
eout
Fa
ilure
A ti
meo
ut o
f the
ES
C m
odul
e C
AN
mes
sage
is
dete
cted
afte
r 10
5 m
s.Ye
llow
ES
C W
arni
ng,
AB
S fu
lly a
vaila
ble,
E
SC
sw
itche
d of
f
• C
heck
mai
n E
CU
for
corr
ect E
OL
confi
gura
tion
(ES
C
mod
ule
yes/
no).
• C
heck
the
wiri
ng b
etw
een
mai
n E
CU
and
ES
C m
odul
e.•
Che
ck th
e vo
ltage
sup
ply
of th
e E
SC
mod
ule.
• C
heck
the
ES
C m
odul
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
4013153a
5 SPN FMI Fault Codes
38 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.23
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5202
10 -
10
= E
SC
-mod
ule
- ab
norm
al ra
te o
f cha
nge
ES
C M
odul
e C
AN
M
essa
ges/
Blo
ckda
ta
Cou
nter
Fai
lure
A fa
ilure
is d
etec
ted
if th
e m
essa
ge c
ount
er
insi
de th
e E
SC
1 (B
yte
0 -
Bit
4 to
Bit
7) o
r in
side
th
e E
SC
2 (B
yte
0 -
Bit
4 to
Bit
7) is
not
cor
rect
ly
incr
emen
ted.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
the
ES
C m
odul
e.•
Che
ck th
e m
ain
EC
U.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5202
10 -
12
= E
SC
-mod
ule
- ba
d in
telli
gent
dev
ice
or
com
pone
nt
ES
C M
odul
e Fa
ilure
F
lag
‘Inte
rnal
Err
or’
Thi
s fa
ilure
indi
cate
s th
at th
e E
SC
sen
sor
has
reco
gniz
ed a
n in
tern
al e
rror
.T
his
failu
re is
set
whe
n th
e in
tern
al e
rror
indi
catio
n fla
g in
side
the
ES
C1
mes
sage
is s
et (
ES
C1
Mul
tiple
xer
= 0x
0 (M
ultip
lexe
r B
yte
0 B
it 4
- 7)
and
B
yte
1 B
it 3
is s
et to
one
).
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5202
10 -
13
= E
SC
-mod
ule
- ou
t of c
alib
ratio
nFa
ilure
Det
ectio
n ‘O
verE
quip
ped’
for
ES
C m
odul
e
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting
(ES
C y
es/n
o).
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5202
10 -
14
= E
SC
-mod
ule
- sp
ecia
l ins
truc
tions
CA
N In
com
patib
ility
of
the
ES
C M
odul
eIt
was
det
ecte
d th
at th
e ch
arac
teris
tic n
umbe
r (C
AN
) of
the
ES
C m
odul
e is
inva
lid.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• Fo
r a
corr
ect f
unct
ion
of th
e br
ake
syst
em, t
he r
ight
co
mbi
natio
n of
bra
ke s
yste
m E
CU
s an
d E
SC
mod
ule
mus
t be
asse
mbl
ed in
the
vehi
cle.
Ple
ase
read
the
num
bers
of a
ll th
ese
com
pone
nts
and
chec
k th
em fo
r co
mpa
tibili
ty a
gain
st e
ach
othe
r.
5202
10 -
19
= E
SC
-mod
ule
- re
ceiv
ed n
etw
ork
data
in
erro
r
ES
C M
odul
e C
AN
M
essa
ges/
Che
cksu
m
Failu
re
The
sof
twar
e sh
all s
et th
e fa
ilure
whe
n th
e E
SC
1 C
heck
sum
(E
SC
1 B
yte
0 -
Bit
0 -
3) o
r th
e E
SC
2 C
heck
sum
(E
SC
2 B
yte
0 -
Bit
0 -3
) di
ffers
from
the
inte
rnal
cal
cula
ted
chec
ksum
.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
the
ES
C m
odul
e.•
Che
ck th
e m
ain
EC
U.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5202
13 -
31
= E
SC
-C
alib
ratio
n P
roce
dure
-
cond
ition
exi
sts
ES
C C
alib
ratio
n P
roce
dure
Is A
ctiv
eT
his
failu
re c
ode
is d
ispl
ayed
if th
e ca
libra
tion
func
tion
of th
e E
SC
is c
urre
ntly
act
ive.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• T
his
DT
C d
oes
not r
equi
re a
ny r
epai
r. It
is o
nly
driv
er
info
rmat
ion.
5202
14 -
2 =
Ste
erin
g A
ngle
Rat
io -
dat
a er
ratic
, in
term
itten
t or
inco
rrec
t
Lear
ning
val
ue
of s
teer
ing
ratio
ch
arac
teris
tics
is
inco
rrec
t
With
ste
erin
g an
gle
ratio
ada
ptat
ion
mod
e en
able
d, fa
ilure
can
be
set w
hen
lear
ned
stee
ring
angl
e ra
tio c
orre
ctio
n va
lue
over
tim
e is
inva
lid.
With
ste
erin
g an
gle
ratio
free
lear
ning
mod
e en
able
d, fa
ilure
det
ectio
n is
ena
bled
onl
y af
ter
lear
ning
of t
he s
teer
ing
angl
e ra
tio c
urve
is
com
plet
ed. F
ailu
re c
an b
e se
t if n
ew le
arne
d st
eerin
g an
gle
ratio
val
ues
over
tim
e co
mpa
red
with
the
calc
ulat
ed s
teer
ing
angl
e ra
tios
from
wha
t w
as p
revi
ousl
y le
arne
d ha
s de
viat
ed.
With
ste
erin
g an
gle
ratio
no
adap
tatio
n m
ode
enab
led,
failu
re w
ill b
e se
t if l
earn
ed s
teer
ing
angl
e ra
tio c
ompa
red
to th
e ca
lcul
ated
ste
erin
g an
gle
ratio
from
par
amet
er s
ettin
g ha
s de
viat
ed.
Thi
s er
ror
dete
ctio
n is
ena
bled
by
para
met
er.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
the
AB
S E
CU
con
cern
ing
corr
ect E
SC
-spe
cific
E
OL
para
met
ers
(e.g
. ste
erin
g-ra
tio, w
heel
bas
e, p
ole-
whe
el te
eth-
num
bers
, tire
-circ
umfe
renc
e, e
tc.)
.•
Is th
e ve
hicl
e da
mag
ed a
t the
fron
t axl
e (s
teer
ing,
axl
e,
etc.
)?•
Che
ck th
e E
SC
mod
ule.
• C
heck
the
stee
ring
whe
el a
ngle
sen
sor.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5202
16 -
31
= E
SC
func
tion
is r
educ
ed (
traile
r A
BS
not
O
K)
- co
nditi
on e
xist
s
Red
uced
ES
C
Fun
ctio
nalit
y (T
raile
r A
BS
Fai
lure
)
It w
as d
etec
ted
that
the
traile
r ha
d fa
ulty
AB
S
func
tiona
lity.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck th
e A
BS
in th
e tra
iler.
5202
40 -
9 =
Ext
erna
l Bra
ke
Dem
and
Sys
tem
(V
RD
U)
- ab
norm
al u
pdat
e ra
te
Ext
erna
l Bra
ke
Req
uest
, Mes
sage
T
imeo
ut
Err
or w
ill b
e se
t if a
ny o
f the
bel
ow c
ondi
tions
are
sa
tisfie
d:-
E1
mes
sage
not
rec
eive
d fo
r 50
ms
whe
n m
essa
ge v
alid
cou
nter
is g
reat
er th
an 0
(in
dica
tes
that
the
mes
sage
has
bee
n re
ceiv
ed
at le
ast o
nce)
.-
E4
mes
sage
not
rec
eive
d fo
r 50
ms
whe
n m
essa
ge v
alid
cou
nter
is g
reat
er th
an 0
(in
dica
tes
that
the
mes
sage
has
bee
n re
ceiv
ed
at le
ast o
nce)
.
No
Driv
er W
arni
ng, A
BS
fu
lly a
vaila
ble
• C
heck
the
failu
re m
emor
y of
the
VR
DU
EC
U a
nd r
epai
r al
l fai
lure
s.•
Che
ck th
e w
iring
of t
he c
hass
is C
AN
dat
a co
nnec
tion
and
the
rela
ting
elec
tric
con
nect
ors
betw
een
AB
S E
CU
an
d th
e V
RD
U E
CU
. R
emar
k: V
RD
U =
Vid
eo R
adar
Dec
isio
n U
nit
4013154a
5 SPN FMI Fault Codes
39Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.24
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5202
40 -
19
= E
xter
nal
Bra
ke D
eman
d S
yste
m
(VR
DU
) -
rece
ived
net
wor
k da
ta in
err
or
Ext
erna
l Bra
ke
Req
uest
, Sev
ere
Err
orE
CU
inte
rface
sev
ere
erro
r w
ill b
e se
t if:
- The
CA
N s
igna
ls o
f the
par
amet
eriz
ed in
terfa
ce
have
dat
a er
ror
(che
cksu
m, c
ount
er, f
orm
at
inco
rrec
t, m
essa
ge c
onte
nt im
plau
sibl
e) o
r- T
imeo
ut e
rror
occ
urre
d du
ring
exec
utio
n of
the
exte
rnal
req
uest
.
No
Driv
er W
arni
ng, A
BS
fu
lly a
vaila
ble
• C
heck
the
VR
DU
ele
ctro
nic
devi
ce (
is th
ere
an in
tern
al
failu
re m
emor
y of
VR
DU
?) a
nd r
epai
r/re
plac
e it,
if
nece
ssar
y.•
Che
ck th
e A
BS
EC
U a
nd r
epla
ce it
, if n
eces
sary
. R
emar
k: V
RD
U =
Vid
eo R
adar
Dec
isio
n U
nit
5202
47 -
31
= Fa
ilure
M
emor
y B
it (E
SC
) -
cond
ition
exi
sts
ES
C M
emor
ybit
Was
A
ctiv
ated
A s
enso
r fa
ilure
(ya
w ra
te, l
ater
al a
ccel
erat
ion,
st
eerin
g an
gle)
occ
urre
d in
the
last
igni
tion
cycl
e an
d ha
s ac
tivat
ed th
e E
SC
mem
ory
func
tion.
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• R
epai
r th
e re
leva
nt s
enso
r fa
ilure
(ya
w ra
te, l
ater
al
acce
lera
tion,
ste
erin
g an
gle)
that
is s
tore
d in
err
or
mem
ory.
5202
72 -
13
= E
OL
Par
amet
er E
SC
-Fun
ctio
n (S
teer
ing
Rat
io P
aram
eter
s)
- ou
t of c
alib
ratio
n
Ste
erin
g A
ngle
P
aram
eter
s A
re N
ot
Cor
rect
Con
figur
ed p
aram
eter
val
ue fo
r S
teer
Ag
func
tion
is n
ot v
alid
.W
hen
qual
ity v
alue
of a
ll of
the
para
met
ers
belo
w
are
grea
ter
than
or
equa
ls 1
0, th
en th
e fa
ilure
de
tect
ion
shal
l be
activ
ated
.-
PR
Mnu
mS
teer
Rat
Lrng
Mod
- P
RM
angO
utrR
i-
PR
MrS
teer
Out
rRi
- P
RM
angI
nrR
i-
PR
MrS
teer
InrR
i-
PR
Man
gInr
Le-
PR
MrS
teer
InrL
e-
PR
Man
gOut
rLe
- P
RM
rSte
erO
utrL
e
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
the
rele
vant
EO
L pa
ram
eter
s an
d co
rrec
t the
m.
5202
90 -
9 =
Fou
r Whe
el
Aux
iliar
y P
arki
ng B
rake
S
yste
m -
abn
orm
al u
pdat
e ra
te
Mal
func
tion
of
Aux
iliar
y P
arkb
rake
F
unct
ion
The
circ
umst
ance
s (s
uppl
y pr
essu
re, e
tc.)
do
not
ensu
re a
saf
e op
erat
ion
of a
uxili
ary
park
bra
ke
func
tion.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck if
an
inco
rrec
t driv
er b
ehav
ior
occu
rred
dur
ing
activ
e 4-
whe
el p
ark
brak
e fu
nctio
n (ig
nitio
n-of
f, pa
rkbr
ake
rele
ase,
eng
ine
stop
s ru
nnin
g, e
tc.)
.•
Che
ck if
the
supp
ly p
ress
ure
is to
o lo
w.
• C
heck
if th
e fr
ont a
xle
pres
sure
con
trol
is fa
ulty
.
5203
10 -
2 =
Ele
ctro
nic
Air
Dry
er -
dat
a er
ratic
, in
term
itten
t or
inco
rrec
t
EA
PU
- A
irDry
er/
Pre
ssur
e S
enso
r P
laus
ibili
ty F
ault
Min
imum
one
pre
ssur
e se
nsor
val
ue is
not
pl
ausi
ble
com
pare
d to
ano
ther
val
ue.
Det
ectio
n tim
e: a
ppro
x. 1
min
ute
with
diff
eren
ce
500
mba
r
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck s
enso
r 1
or s
enso
r 2.
5203
10 -
7 =
Ele
ctro
nic
Air
Dry
er -
mec
hani
cal s
yste
m
not r
espo
ndin
g co
rrec
tly o
r ou
t of a
djus
tmen
t
EA
PU
- A
irDry
er/
Reg
ener
atio
n Fa
ult
The
sys
tem
pre
ssur
e do
es n
ot d
rop
durin
g re
gene
ratio
n.
Det
ectio
n tim
e: im
med
iate
at t
he e
nd o
f a
rege
nera
tion
proc
ess
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck r
egen
erat
ion
orifi
ce (
bloc
ked?
).•
Che
ck s
olen
oid
bloc
k.•
Che
ck s
ilenc
er (
bloc
ked?
).
5203
10 -
8 =
Ele
ctro
nic
Air
Dry
er -
abn
orm
al fr
eque
ncy,
pu
lse
wid
th o
r pe
riod
EA
PU
- A
irDry
er/F
ail
Saf
e M
ode
No
inpu
t pre
ssur
e to
gen
erat
e sy
stem
pre
ssur
e av
aila
ble
or c
ompr
esso
r/re
gene
ratio
n va
lve
failu
re
activ
e.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck p
aram
eter
set
ting
(con
figur
atio
n of
sen
sors
, Air1
-m
essa
ge c
onfig
urat
ion)
.•
Che
ck p
ress
ure
sign
als
in A
ir1/B
rake
s m
essa
ge.
5203
10 -
9 =
Ele
ctro
nic
Air
Dry
er -
abn
orm
al u
pdat
e ra
te
EA
PU
- A
irDry
er/
Mec
hani
cal M
ode
due
to m
anda
tory
CA
N
sign
als
(eng
ine
stat
e)
One
of t
he r
ecei
ved
CA
N m
essa
ges
from
the
engi
ne s
yste
m h
as ti
med
out
or
one
data
is in
valid
.D
etec
tion
time:
app
rox.
4x
cycl
e tim
e
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck p
aram
eter
set
ting
(con
figur
atio
n of
man
dato
ry
CA
N in
puts
).•
Che
ck if
nec
essa
ry C
AN
mes
sage
s ar
e av
aila
ble.
5203
10 -
10
= E
lect
roni
c A
ir D
ryer
- a
bnor
mal
rate
of
chan
ge
EA
PU
- A
irDry
er/
Volu
me
Com
pres
sor
Faul
t
The
sys
tem
pre
ssur
e re
ache
s a
high
pre
ssur
e le
vel m
uch
too
fast
.D
etec
tion
time:
imm
edia
te a
t the
end
of a
pum
ping
ph
ase
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck p
aram
eter
set
ting
(com
pres
sor
char
acte
ristic
).
5203
10 -
14
= E
lect
roni
c A
ir D
ryer
- s
peci
al in
stru
ctio
nsE
AP
U -
AirD
ryer
/No
Am
bien
t Tem
pera
ture
A
vaila
ble
The
am
bien
t con
ditio
n m
essa
ge h
as ti
med
out
or
one
data
is in
valid
.D
etec
tion
time:
app
rox.
4x
cycl
e tim
e
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck p
aram
eter
set
ting
(con
figur
atio
n of
CA
N in
put:
ambi
ent c
ondi
tion)
.•
Che
ck if
nec
essa
ry C
AN
mes
sage
s ar
e av
aila
ble.
4013155a
5 SPN FMI Fault Codes
40 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.25
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
01 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 1
Left
- da
ta e
rrat
ic,
inte
rmitt
ent o
r in
corr
ect
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
1 Le
ft
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
act
ive
for
cert
ain
time
perio
d, th
e w
heel
spe
ed
chat
terin
g fa
ult w
ill b
e re
cogn
ized
.D
etec
tion
is o
nly
activ
e if
vehi
cle
refe
renc
e sp
eed
is m
ore
than
15
km/h
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
5205
01 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 1
Left
- m
echa
nica
l sy
stem
not
res
pond
ing
prop
erly
or
out o
f ad
just
men
t
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
1 Le
ft
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
hw
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
, res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el.
Thi
s er
ror
dete
ctio
n is
pos
sibl
e in
thre
e di
ffere
nt
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
5205
01 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 1
Left
- ab
norm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
1 Le
ft
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r, or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
01 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
1 Le
ft -
abno
rmal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
1 Le
ft
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
will
le
ad to
jum
p up
failu
re.
Jum
p up
failu
re w
ill b
e de
tect
ed w
hen
whe
els
star
t ro
tatin
g fr
om s
tand
still
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
01 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
1 Le
ft -
out o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
1 Le
ft
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all r
epor
t im
perm
issi
ble
tire
size
er
ror
for
a w
heel
if th
e m
inim
um o
f all
unco
rrec
ted
whe
el s
peed
s in
the
vehi
cle
is g
reat
er th
an 2
0 km
/h.
Whe
n th
e pr
econ
ditio
ns a
re s
atis
fied
with
any
of
the
follo
win
g co
nditi
ons,
then
the
impe
rmis
sibl
e tir
e si
ze e
rror
sha
ll be
set
for
the
conc
erne
d w
heel
:- T
he d
iffer
ence
in c
orre
ctio
n va
lues
bet
wee
n th
e le
ft an
d rig
ht w
heel
s of
an
axle
exc
eeds
10%
.-
Cor
rect
ion
valu
e of
the
whe
el is
mor
e th
an 1
4%.
- Whe
el s
peed
dev
iatio
n be
twee
n th
e le
ft an
d rig
ht
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- Whe
el s
peed
dev
iatio
n of
the
whe
el c
ompa
red
to th
e av
erag
e fr
ont a
xle
whe
el s
peed
is g
reat
er
than
14%
.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
4013156a
5 SPN FMI Fault Codes
41Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.26
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
01 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
1 Le
ft -
spec
ial
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 1
Left
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
02 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 1
Rig
ht -
dat
a er
ratic
, in
term
itten
t or
inco
rrec
t
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
1 R
ight
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
ac
tive
for
a ce
rtai
n tim
e pe
riod,
the
whe
el s
peed
ch
atte
ring
faul
t will
be
reco
gniz
ed.
Det
ectio
n is
onl
y ac
tive
if ve
hicl
e re
fere
nce
spee
d is
mor
e th
an 1
5 km
/h.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
5205
02 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 1
Rig
ht -
mec
hani
cal
syst
em n
ot r
espo
ndin
g pr
oper
ly o
r ou
t of
adju
stm
ent
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
1 R
ight
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
h w
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el. T
his
erro
r de
tect
ion
is p
ossi
ble
in th
ree
diffe
rent
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
5205
02 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 1
Rig
ht -
abn
orm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
1 R
ight
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
02 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
1 R
ight
- a
bnor
mal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
1 R
ight
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
will
le
ad to
jum
p up
failu
re.
Jum
p up
failu
re w
ill b
e de
tect
ed w
hen
whe
els
star
t ro
tatin
g fr
om s
tand
still
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
4013157a
5 SPN FMI Fault Codes
42 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.27
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
02 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
1 R
ight
- o
ut o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
1 R
ight
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all r
epor
t ‘im
perm
issi
ble
tire
size
er
ror’
for
a w
heel
if th
e m
inim
um o
f all
unco
rrec
ted
whe
el s
peed
s in
the
vehi
cle
is g
reat
er th
an 2
0 km
/h.
Whe
n th
e pr
econ
ditio
ns a
re s
atis
fied
with
any
of
the
follo
win
g co
nditi
ons,
then
the
impe
rmis
sibl
e tir
e si
ze e
rror
sha
ll be
set
for
the
conc
erne
d w
heel
:- T
he d
iffer
ence
in c
orre
ctio
n va
lues
bet
wee
n th
e le
ft an
d rig
ht w
heel
s of
an
axle
exc
eeds
10%
.-
Cor
rect
ion
valu
e of
the
whe
el is
mor
e th
an 1
4%.
- Whe
el s
peed
dev
iatio
n be
twee
n th
e le
ft an
d rig
ht
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- Whe
el s
peed
dev
iatio
n of
the
whe
el c
ompa
red
to th
e av
erag
e fr
ont a
xle
whe
el s
peed
is g
reat
er
than
14%
.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
02 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
1 R
ight
- s
peci
al
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 1
Rig
ht
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
03 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 2
Left
- da
ta e
rrat
ic,
inte
rmitt
ent o
r in
corr
ect
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
2 Le
ft
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
act
ive
for
cert
ain
time
perio
d, th
e w
heel
spe
ed
chat
terin
g fa
ult w
ill b
e re
cogn
ized
.D
etec
tion
is o
nly
activ
e if
vehi
cle
refe
renc
e sp
eed
is m
ore
than
15
km/h
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
5205
03 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 2
Left
- m
echa
nica
l sy
stem
not
res
pond
ing
prop
erly
or
out o
f ad
just
men
t
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
2 Le
ft
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
h w
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
, res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el.
Thi
s er
ror
dete
ctio
n is
pos
sibl
e in
thre
e di
ffere
nt
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
5205
03 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 2
Left
- ab
norm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
2 Le
ft
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
4013158a
5 SPN FMI Fault Codes
43Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.28
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
03 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
2 Le
ft -
abno
rmal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
2 Le
ft
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
w
ill le
ad to
jum
p up
failu
re. J
ump
up fa
ilure
will
be
det
ecte
d w
hen
whe
els
star
t rot
atin
g fr
om
stan
dstil
l.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. (Is
th
e se
nsor
fitti
ng lo
ose?
)•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
03 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
2 Le
ft -
out o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
2 Le
ft
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all r
epor
t ‘im
perm
issi
ble
tire
size
er
ror’
for
a w
heel
if th
e m
inim
um o
f all
unco
rrec
ted
whe
el s
peed
s in
the
vehi
cle
is g
reat
er th
an 2
0 km
/h.
Whe
n th
e pr
econ
ditio
ns a
re s
atis
fied
with
any
of
the
follo
win
g co
nditi
ons,
then
the
impe
rmis
sibl
e tir
e si
ze e
rror
sha
ll be
set
for
the
conc
erne
d w
heel
:- T
he d
iffer
ence
in c
orre
ctio
n va
lues
bet
wee
n th
e le
ft an
d rig
ht w
heel
s of
an
axle
exc
eeds
10%
.-
Cor
rect
ion
valu
e of
the
whe
el is
mor
e th
an 1
4%.
- Whe
el s
peed
dev
iatio
n be
twee
n th
e le
ft an
d rig
ht
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- Whe
el s
peed
dev
iatio
n of
the
whe
el c
ompa
red
to th
e av
erag
e fr
ont a
xle
whe
el s
peed
is g
reat
er
than
14%
.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
03 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
2 Le
ft -
spec
ial
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 2
Left
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
04 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 2
Rig
ht -
dat
a er
ratic
, in
term
itten
t or
inco
rrec
t
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
2 R
ight
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
ac
tive
for
a ce
rtai
n tim
e pe
riod,
the
whe
el s
peed
ch
atte
ring
faul
t will
be
reco
gniz
ed.
Det
ectio
n is
onl
y ac
tive
if ve
hicl
e re
fere
nce
spee
d is
mor
e th
an 1
5 km
/h.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
5205
04 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 2
Rig
ht -
mec
hani
cal
syst
em n
ot r
espo
ndin
g pr
oper
ly o
r ou
t of
adju
stm
ent
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
2 R
ight
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
h w
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
, res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el.
Thi
s er
ror
dete
ctio
n is
pos
sibl
e in
thre
e di
ffere
nt
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• R
epla
ce th
e m
ain
EC
U if
sen
sor
and
air
gap
are
corr
ect.
4013159a
5 SPN FMI Fault Codes
44 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.29D
TC S
PN
FM
IFa
ilure
Det
ectio
n N
ame
Failu
re D
etec
tion
Des
crip
tion
War
ning
and
Sys
tem
R
eact
ion
Rep
air
5205
04 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 2
Rig
ht -
abn
orm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
2 R
ight
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
04 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
2 R
ight
- a
bnor
mal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
2 R
ight
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
will
le
ad to
jum
p up
failu
re.
Jum
p up
failu
re w
ill b
e de
tect
ed w
hen
whe
els
star
t ro
tatin
g fr
om s
tand
still
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. (Is
th
e se
nsor
fitti
ng lo
ose?
)•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
04 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
2 R
ight
- o
ut o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
2 R
ight
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el. T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e tir
e si
ze e
rror
’ for
a
whe
el if
the
min
imum
of a
ll un
corr
ecte
d w
heel
sp
eeds
in th
e ve
hicl
e is
gre
ater
than
20
km/h
. W
hen
the
prec
ondi
tions
are
sat
isfie
d w
ith a
ny o
f th
e fo
llow
ing
cond
ition
s, th
en th
e im
perm
issi
ble
tire
size
err
or s
hall
be s
et fo
r th
e co
ncer
ned
whe
el:
- The
diff
eren
ce in
cor
rect
ion
valu
es b
etw
een
the
left
and
right
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- C
orre
ctio
n va
lue
of th
e w
heel
is m
ore
than
14%
.- W
heel
spe
ed d
evia
tion
betw
een
the
left
and
right
w
heel
s of
an
axle
exc
eeds
10%
.- W
heel
spe
ed d
evia
tion
of th
e w
heel
com
pare
d to
the
aver
age
fron
t axl
e w
heel
spe
ed is
gre
ater
th
an 1
4%.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
04 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
2 R
ight
- s
peci
al
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 2
Rig
ht
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
05 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 3
Left
- da
ta e
rrat
ic,
inte
rmitt
ent o
r in
corr
ect
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
3 Le
ft
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
ac
tive
for
a ce
rtai
n tim
e pe
riod,
the
whe
el s
peed
ch
atte
ring
faul
t will
be
reco
gniz
ed.
Det
ectio
n is
onl
y ac
tive
if ve
hicl
e re
fere
nce
spee
d is
mor
e th
an 1
5 km
/h.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
4013160a
5 SPN FMI Fault Codes
45Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.30
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
05 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 3
Left
- m
echa
nica
l sy
stem
not
res
pond
ing
prop
erly
or
out o
f ad
just
men
t
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
3 Le
ft
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
h w
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el.
Thi
s er
ror
dete
ctio
n is
pos
sibl
e in
thre
e di
ffere
nt
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
5205
05 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 3
Left
- ab
norm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
3 Le
ft
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
05 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
3 Le
ft -
abno
rmal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
3 Le
ft
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
will
le
ad to
jum
p up
failu
re.
Jum
p up
failu
re w
ill b
e de
tect
ed w
hen
whe
els
star
t ro
tatin
g fr
om s
tand
still
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. (Is
th
e se
nsor
fitti
ng lo
ose?
)•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
05 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
3 Le
ft -
out o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
3 Le
ft
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el. T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e tir
e si
ze e
rror
’ for
a
whe
el if
the
min
imum
of a
ll un
corr
ecte
d w
heel
sp
eeds
in th
e ve
hicl
e is
gre
ater
than
20
km/h
. W
hen
the
prec
ondi
tions
are
sat
isfie
d w
ith a
ny o
f th
e fo
llow
ing
cond
ition
s, th
en th
e im
perm
issi
ble
tire
size
err
or s
hall
be s
et fo
r th
e co
ncer
ned
whe
el:
- The
diff
eren
ce in
cor
rect
ion
valu
es b
etw
een
the
left
and
right
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- C
orre
ctio
n va
lue
of th
e w
heel
is m
ore
than
14%
.- W
heel
spe
ed d
evia
tion
betw
een
the
left
and
right
w
heel
s of
an
axle
exc
eeds
10%
.- W
heel
spe
ed d
evia
tion
of th
e w
heel
com
pare
d to
the
aver
age
fron
t axl
e w
heel
spe
ed is
gre
ater
th
an 1
4%.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
05 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
3 Le
ft -
spec
ial
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 3
Left
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
4013161a
5 SPN FMI Fault Codes
46 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.31
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
06 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 3
Rig
ht -
dat
a er
ratic
, in
term
itten
t or
inco
rrec
t
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
3 R
ight
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
act
ive
for
cert
ain
time
perio
d, th
e w
heel
spe
ed
chat
terin
g fa
ult w
ill b
e re
cogn
ized
.D
etec
tion
is o
nly
activ
e if
vehi
cle
refe
renc
e sp
eed
is m
ore
than
15
km/h
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
5205
06 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 3
Rig
ht -
mec
hani
cal
syst
em n
ot r
espo
ndin
g pr
oper
ly o
r ou
t of
adju
stm
ent
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
3 R
ight
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
h w
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el.
Thi
s er
ror
dete
ctio
n is
pos
sibl
e in
thre
e di
ffere
nt
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
5205
06 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 3
Rig
ht -
abn
orm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
3 R
ight
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
06 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
3 R
ight
- a
bnor
mal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
3 R
ight
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
will
le
ad to
jum
p up
failu
re.
Jum
p up
failu
re w
ill b
e de
tect
ed w
hen
whe
els
star
t ro
tatin
g fr
om s
tand
still
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. (Is
th
e se
nsor
fitti
ng lo
ose?
)•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
06 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
3 R
ight
- o
ut o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
3 R
ight
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el. T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e tir
e si
ze e
rror
’ for
a
whe
el if
the
min
imum
of a
ll un
corr
ecte
d w
heel
sp
eeds
in th
e ve
hicl
e is
gre
ater
than
20
km/h
. W
hen
the
prec
ondi
tions
are
sat
isfie
d w
ith a
ny o
f th
e fo
llow
ing
cond
ition
s, th
en th
e im
perm
issi
ble
tire
size
err
or s
hall
be s
et fo
r th
e co
ncer
ned
whe
el:
- The
diff
eren
ce in
cor
rect
ion
valu
es b
etw
een
the
left
and
right
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- C
orre
ctio
n va
lue
of th
e w
heel
is m
ore
than
14%
.- W
heel
spe
ed d
evia
tion
betw
een
the
left
and
right
w
heel
s of
an
axle
exc
eeds
10%
.- W
heel
spe
ed d
evia
tion
of th
e w
heel
com
pare
d to
the
aver
age
fron
t axl
e w
heel
spe
ed is
gre
ater
th
an 1
4%.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
4013162a
5 SPN FMI Fault Codes
47Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.32
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
06 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
3 R
ight
- s
peci
al
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 3
Rig
ht
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
07 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 4
Left
- da
ta e
rrat
ic,
inte
rmitt
ent o
r in
corr
ect
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
4 Le
ft
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
act
ive
for
cert
ain
time
perio
d, th
e w
heel
spe
ed
chat
terin
g fa
ult w
ill b
e re
cogn
ized
.D
etec
tion
is o
nly
activ
e if
vehi
cle
refe
renc
e sp
eed
is m
ore
than
15
km/h
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
5205
07 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 4
Left
- m
echa
nica
l sy
stem
not
res
pond
ing
prop
erly
or
out o
f ad
just
men
t
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
4 Le
ft
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
h w
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el.
Thi
s er
ror
dete
ctio
n is
pos
sibl
e in
thre
e di
ffere
nt
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
5205
07 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 4
Left
- ab
norm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
4 Le
ft
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
07 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
4 Le
ft -
abno
rmal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
4 Le
ft
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
will
le
ad to
jum
p up
failu
re.
Jum
p up
failu
re w
ill b
e de
tect
ed w
hen
whe
els
star
t ro
tatin
g fr
om s
tand
still
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. (Is
th
e se
nsor
fitti
ng lo
ose?
)•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
4013163a
5 SPN FMI Fault Codes
48 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.33
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
07 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
4 Le
ft -
out o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
4 Le
ft
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el. T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e tir
e si
ze e
rror
’ for
a
whe
el if
the
min
imum
of a
ll un
corr
ecte
d w
heel
sp
eeds
in th
e ve
hicl
e is
gre
ater
than
20
km/h
. W
hen
the
prec
ondi
tions
are
sat
isfie
d w
ith a
ny o
f th
e fo
llow
ing
cond
ition
s, th
en th
e im
perm
issi
ble
tire
size
err
or s
hall
be s
et fo
r th
e co
ncer
ned
whe
el:
- The
diff
eren
ce in
cor
rect
ion
valu
es b
etw
een
the
left
and
right
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- C
orre
ctio
n va
lue
of th
e w
heel
is m
ore
than
14%
.- W
heel
spe
ed d
evia
tion
betw
een
the
left
and
right
w
heel
s of
an
axle
exc
eeds
10%
.- W
heel
spe
ed d
evia
tion
of th
e w
heel
com
pare
d to
the
aver
age
fron
t axl
e w
heel
spe
ed is
gre
ater
th
an 1
4%.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
07 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
4 Le
ft -
spec
ial
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 4
Left
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
08 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 4
Rig
ht -
dat
a er
ratic
, in
term
itten
t or
inco
rrec
t
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
4 R
ight
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
act
ive
for
cert
ain
time
perio
d, th
e w
heel
spe
ed
chat
terin
g fa
ult w
ill b
e re
cogn
ized
.D
etec
tion
is o
nly
activ
e if
vehi
cle
refe
renc
e sp
eed
is m
ore
than
15
km/h
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
5205
08 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 4
Rig
ht -
mec
hani
cal
syst
em n
ot r
espo
ndin
g pr
oper
ly o
r ou
t of
adju
stm
ent
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
4 R
ight
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
h w
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el.
Thi
s er
ror
dete
ctio
n is
pos
sibl
e in
thre
e di
ffere
nt
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
5205
08 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 4
Rig
ht -
abn
orm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
4 R
ight
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
4013164a
5 SPN FMI Fault Codes
49Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.34
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
08 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
4 R
ight
- a
bnor
mal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
4 R
ight
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
will
le
ad to
jum
p up
failu
re.
Jum
p up
failu
re w
ill b
e de
tect
ed w
hen
whe
els
star
t ro
tatin
g fr
om s
tand
still
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. (Is
th
e se
nsor
fitti
ng lo
ose?
)•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
08 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
4 R
ight
- o
ut o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
4 R
ight
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el. T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e tir
e si
ze e
rror
’ for
a
whe
el if
the
min
imum
of a
ll un
corr
ecte
d w
heel
sp
eeds
in th
e ve
hicl
e is
gre
ater
than
20
km/h
. W
hen
the
prec
ondi
tions
are
sat
isfie
d w
ith a
ny o
f th
e fo
llow
ing
cond
ition
s, th
en th
e im
perm
issi
ble
tire
size
err
or s
hall
be s
et fo
r th
e co
ncer
ned
whe
el:
- The
diff
eren
ce in
cor
rect
ion
valu
es b
etw
een
the
left
and
right
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- C
orre
ctio
n va
lue
of th
e w
heel
is m
ore
than
14%
.- W
heel
spe
ed d
evia
tion
betw
een
the
left
and
right
w
heel
s of
an
axle
exc
eeds
10%
.- W
heel
spe
ed d
evia
tion
of th
e w
heel
com
pare
d to
the
aver
age
fron
t axl
e w
heel
spe
ed is
gre
ater
th
an 1
4%.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
08 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
4 R
ight
- s
peci
al
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 4
Rig
ht
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
09 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 5
Left
- da
ta e
rrat
ic,
inte
rmitt
ent o
r in
corr
ect
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
5 Le
ft
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
act
ive
for
cert
ain
time
perio
d, th
e w
heel
spe
ed
chat
terin
g fa
ult w
ill b
e re
cogn
ized
.D
etec
tion
is o
nly
activ
e if
vehi
cle
refe
renc
e sp
eed
is m
ore
than
15
km/h
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
5205
09 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 5
Left
- m
echa
nica
l sy
stem
not
res
pond
ing
prop
erly
or
out o
f ad
just
men
t
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
5 Le
ft
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
h w
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el.
Thi
s er
ror
dete
ctio
n is
pos
sibl
e in
thre
e di
ffere
nt
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
4013165a
5 SPN FMI Fault Codes
50 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.35D
TC S
PN
FM
IFa
ilure
Det
ectio
n N
ame
Failu
re D
etec
tion
Des
crip
tion
War
ning
and
Sys
tem
R
eact
ion
Rep
air
5205
09 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 5
Left
- ab
norm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
5 Le
ft
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
09 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
5 Le
ft -
abno
rmal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
5 Le
ft
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
will
le
ad to
jum
p up
failu
re.
Jum
p up
failu
re w
ill b
e de
tect
ed w
hen
whe
els
star
t ro
tatin
g fr
om s
tand
still
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. (Is
th
e se
nsor
fitti
ng lo
ose?
)•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
09 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
5 Le
ft -
out o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
5 Le
ft
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el. T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e tir
e si
ze e
rror
’ for
a
whe
el if
the
min
imum
of a
ll un
corr
ecte
d w
heel
sp
eeds
in th
e ve
hicl
e is
gre
ater
than
20
km/h
. W
hen
the
prec
ondi
tions
are
sat
isfie
d w
ith a
ny o
f th
e fo
llow
ing
cond
ition
s, th
en th
e im
perm
issi
ble
tire
size
err
or s
hall
be s
et fo
r th
e co
ncer
ned
whe
el:
- The
diff
eren
ce in
cor
rect
ion
valu
es b
etw
een
the
left
and
right
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- C
orre
ctio
n va
lue
of th
e w
heel
is m
ore
than
14%
.- W
heel
spe
ed d
evia
tion
betw
een
the
left
and
right
w
heel
s of
an
axle
exc
eeds
10%
.- W
heel
spe
ed d
evia
tion
of th
e w
heel
com
pare
d to
the
aver
age
fron
t axl
e w
heel
spe
ed is
gre
ater
th
an 1
4%.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
09 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
5 Le
ft -
spec
ial
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 5
Left
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
10 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 5
Rig
ht -
dat
a er
ratic
, in
term
itten
t or
inco
rrec
t
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
5 R
ight
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
act
ive
for
cert
ain
time
perio
d, th
e w
heel
spe
ed
chat
terin
g fa
ult w
ill b
e re
cogn
ized
.D
etec
tion
is o
nly
activ
e if
vehi
cle
refe
renc
e sp
eed
is m
ore
than
15
km/h
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
4013166a
5 SPN FMI Fault Codes
51Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.36
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
10 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 5
Rig
ht -
mec
hani
cal
syst
em n
ot r
espo
ndin
g pr
oper
ly o
r ou
t of
adju
stm
ent
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
5 R
ight
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
h w
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el.
Thi
s er
ror
dete
ctio
n is
pos
sibl
e in
thre
e di
ffere
nt
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
5205
10 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 5
Rig
ht -
abn
orm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
5 R
ight
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
10 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
5 R
ight
- a
bnor
mal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
5 R
ight
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
will
le
ad to
jum
p up
failu
re.
Jum
p up
failu
re w
ill b
e de
tect
ed w
hen
whe
els
star
t ro
tatin
g fr
om s
tand
still
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. (Is
th
e se
nsor
fitti
ng lo
ose?
)•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
10 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
5 R
ight
- o
ut o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
5 R
ight
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el. T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e tir
e si
ze e
rror
’ for
a
whe
el if
the
min
imum
of a
ll un
corr
ecte
d w
heel
sp
eeds
in th
e ve
hicl
e is
gre
ater
than
20
km/h
. W
hen
the
prec
ondi
tions
are
sat
isfie
d w
ith a
ny o
f th
e fo
llow
ing
cond
ition
s, th
en th
e im
perm
issi
ble
tire
size
err
or s
hall
be s
et fo
r th
e co
ncer
ned
whe
el:
- The
diff
eren
ce in
cor
rect
ion
valu
es b
etw
een
the
left
and
right
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- C
orre
ctio
n va
lue
of th
e w
heel
is m
ore
than
14%
.- W
heel
spe
ed d
evia
tion
betw
een
the
left
and
right
w
heel
s of
an
axle
exc
eeds
10%
.- W
heel
spe
ed d
evia
tion
of th
e w
heel
com
pare
d to
the
aver
age
fron
t axl
e w
heel
spe
ed is
gre
ater
th
an 1
4%.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
10 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
5 R
ight
- s
peci
al
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 5
Rig
ht
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
4013167a
5 SPN FMI Fault Codes
52 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.37
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
11 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 6
Left
- da
ta e
rrat
ic,
inte
rmitt
ent o
r in
corr
ect
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
6 Le
ft
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
act
ive
for
cert
ain
time
perio
d, th
e w
heel
spe
ed
chat
terin
g fa
ult w
ill b
e re
cogn
ized
.D
etec
tion
is o
nly
activ
e if
vehi
cle
refe
renc
e sp
eed
is m
ore
than
15
km/h
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
5205
11 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 6
Left
- m
echa
nica
l sy
stem
not
res
pond
ing
prop
erly
or
out o
f ad
just
men
t
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
6 Le
ft
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
h w
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el.
Thi
s er
ror
dete
ctio
n is
pos
sibl
e in
thre
e di
ffere
nt
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
5205
11 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 6
Left
- ab
norm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
6 Le
ft
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
11 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
6 Le
ft -
abno
rmal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
6 Le
ft
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
will
le
ad to
jum
p up
failu
re.
Jum
p up
failu
re w
ill b
e de
tect
ed w
hen
whe
els
star
t ro
tatin
g fr
om s
tand
still
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. (Is
th
e se
nsor
fitti
ng lo
ose?
)•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
11 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
6 Le
ft -
out o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
6 Le
ft
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el. T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e tir
e si
ze e
rror
’ for
a
whe
el if
the
min
imum
of a
ll un
corr
ecte
d w
heel
sp
eeds
in th
e ve
hicl
e is
gre
ater
than
20
km/h
. W
hen
the
prec
ondi
tions
are
sat
isfie
d w
ith a
ny o
f th
e fo
llow
ing
cond
ition
s, th
en th
e im
perm
issi
ble
tire
size
err
or s
hall
be s
et fo
r th
e co
ncer
ned
whe
el:
- The
diff
eren
ce in
cor
rect
ion
valu
es b
etw
een
the
left
and
right
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- C
orre
ctio
n va
lue
of th
e w
heel
is m
ore
than
14%
.- W
heel
spe
ed d
evia
tion
betw
een
the
left
and
right
w
heel
s of
an
axle
exc
eeds
10%
.- W
heel
spe
ed d
evia
tion
of th
e w
heel
com
pare
d to
the
aver
age
fron
t axl
e w
heel
spe
ed is
gre
ater
th
an 1
4%.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
4013168a
5 SPN FMI Fault Codes
53Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.38
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
11 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
6 Le
ft -
spec
ial
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 6
Left
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
12 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 6
Rig
ht -
dat
a er
ratic
, in
term
itten
t or
inco
rrec
t
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
6 R
ight
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
act
ive
for
cert
ain
time
perio
d, th
e w
heel
spe
ed
chat
terin
g fa
ult w
ill b
e re
cogn
ized
.D
etec
tion
is o
nly
activ
e if
vehi
cle
refe
renc
e sp
eed
is m
ore
than
15
km/h
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
5205
12 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 6
Rig
ht -
mec
hani
cal
syst
em n
ot r
espo
ndin
g pr
oper
ly o
r ou
t of
adju
stm
ent
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
6 R
ight
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
h w
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el.
Thi
s er
ror
dete
ctio
n is
pos
sibl
e in
thre
e di
ffere
nt
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
5205
12 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 6
Rig
ht -
abn
orm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
6 R
ight
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
12 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
6 R
ight
- a
bnor
mal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
6 R
ight
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
will
le
ad to
jum
p up
failu
re.
Jum
p up
failu
re w
ill b
e de
tect
ed w
hen
whe
els
star
t ro
tatin
g fr
om s
tand
still
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. (Is
th
e se
nsor
fitti
ng lo
ose?
)•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
4013169a
5 SPN FMI Fault Codes
54 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.39
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
12 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
6 R
ight
- o
ut o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
6 R
ight
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el. T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e tir
e si
ze e
rror
’ for
a
whe
el if
the
min
imum
of a
ll un
corr
ecte
d w
heel
sp
eeds
in th
e ve
hicl
e is
gre
ater
than
20
km/h
. W
hen
the
prec
ondi
tions
are
sat
isfie
d w
ith a
ny o
f th
e fo
llow
ing
cond
ition
s, th
en th
e im
perm
issi
ble
tire
size
err
or s
hall
be s
et fo
r th
e co
ncer
ned
whe
el:
- The
diff
eren
ce in
cor
rect
ion
valu
es b
etw
een
the
left
and
right
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- C
orre
ctio
n va
lue
of th
e w
heel
is m
ore
than
14%
.- W
heel
spe
ed d
evia
tion
betw
een
the
left
and
right
w
heel
s of
an
axle
exc
eeds
10%
.- W
heel
spe
ed d
evia
tion
of th
e w
heel
com
pare
d to
the
aver
age
fron
t axl
e w
heel
spe
ed is
gre
ater
th
an 1
4%.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
12 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
6 R
ight
- s
peci
al
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 6
Rig
ht
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
13 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 7
Left
- da
ta e
rrat
ic,
inte
rmitt
ent o
r in
corr
ect
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
7 Le
ft
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
act
ive
for
cert
ain
time
perio
d, th
e w
heel
spe
ed
chat
terin
g fa
ult w
ill b
e re
cogn
ized
.D
etec
tion
is o
nly
activ
e if
vehi
cle
refe
renc
e sp
eed
is m
ore
than
15
km/h
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
5205
13 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 7
Left
- m
echa
nica
l sy
stem
not
res
pond
ing
prop
erly
or
out o
f ad
just
men
t
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
7 Le
ft
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
h w
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el.
Thi
s er
ror
dete
ctio
n is
pos
sibl
e in
thre
e di
ffere
nt
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
5205
13 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 7
Left
- ab
norm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
7 Le
ft
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
4013170a
5 SPN FMI Fault Codes
55Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.40
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
13 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
7 Le
ft -
abno
rmal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
7 Le
ft
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
will
le
ad to
jum
p up
failu
re.
Jum
p up
failu
re w
ill b
e de
tect
ed w
hen
whe
els
star
t ro
tatin
g fr
om s
tand
still
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. (Is
th
e se
nsor
fitti
ng lo
ose?
)•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
13 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
7 Le
ft -
out o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
7 Le
ft
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el. T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e tir
e si
ze e
rror
’ for
a
whe
el if
the
min
imum
of a
ll un
corr
ecte
d w
heel
sp
eeds
in th
e ve
hicl
e is
gre
ater
than
20
km/h
. W
hen
the
prec
ondi
tions
are
sat
isfie
d w
ith a
ny o
f th
e fo
llow
ing
cond
ition
s, th
en th
e im
perm
issi
ble
tire
size
err
or s
hall
be s
et fo
r th
e co
ncer
ned
whe
el:
- The
diff
eren
ce in
cor
rect
ion
valu
es b
etw
een
the
left
and
right
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- C
orre
ctio
n va
lue
of th
e w
heel
is m
ore
than
14%
.- W
heel
spe
ed d
evia
tion
betw
een
the
left
and
right
w
heel
s of
an
axle
exc
eeds
10%
.- W
heel
spe
ed d
evia
tion
of th
e w
heel
com
pare
d to
the
aver
age
fron
t axl
e w
heel
spe
ed is
gre
ater
th
an 1
4%.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
13 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
7 Le
ft -
spec
ial
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 7
Left
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
14 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 7
Rig
ht -
dat
a er
ratic
, in
term
itten
t or
inco
rrec
t
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
7 R
ight
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
act
ive
for
cert
ain
time
perio
d, th
e w
heel
spe
ed
chat
terin
g fa
ult w
ill b
e re
cogn
ized
.D
etec
tion
is o
nly
activ
e if
vehi
cle
refe
renc
e sp
eed
is m
ore
than
15
km/h
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
5205
14 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 7
Rig
ht -
mec
hani
cal
syst
em n
ot r
espo
ndin
g pr
oper
ly o
r ou
t of
adju
stm
ent
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
7 R
ight
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
h w
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el.
Thi
s er
ror
dete
ctio
n is
pos
sibl
e in
thre
e di
ffere
nt
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
4013171a
5 SPN FMI Fault Codes
56 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.41D
TC S
PN
FM
IFa
ilure
Det
ectio
n N
ame
Failu
re D
etec
tion
Des
crip
tion
War
ning
and
Sys
tem
R
eact
ion
Rep
air
5205
14 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 7
Rig
ht -
abn
orm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
7 R
ight
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
14 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
7 R
ight
- a
bnor
mal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
7 R
ight
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
will
le
ad to
jum
p up
failu
re.
Jum
p up
failu
re w
ill b
e de
tect
ed w
hen
whe
els
star
t ro
tatin
g fr
om s
tand
still
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. (Is
th
e se
nsor
fitti
ng lo
ose?
)•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
14 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
7 R
ight
- o
ut o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
7 R
ight
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el. T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e tir
e si
ze e
rror
’ for
a
whe
el if
the
min
imum
of a
ll un
corr
ecte
d w
heel
sp
eeds
in th
e ve
hicl
e is
gre
ater
than
20
km/h
.W
hen
the
prec
ondi
tions
are
sat
isfie
d w
ith a
ny o
f th
e fo
llow
ing
cond
ition
s, th
en th
e im
perm
issi
ble
tire
size
err
or s
hall
be s
et fo
r th
e co
ncer
ned
whe
el:
- The
diff
eren
ce in
cor
rect
ion
valu
es b
etw
een
the
left
and
right
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- C
orre
ctio
n va
lue
of th
e w
heel
is m
ore
than
14%
.- W
heel
spe
ed d
evia
tion
betw
een
the
left
and
right
w
heel
s of
an
axle
exc
eeds
10%
.- W
heel
spe
ed d
evia
tion
of th
e w
heel
com
pare
d to
the
aver
age
fron
t axl
e w
heel
spe
ed is
gre
ater
th
an 1
4%.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
14 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
7 R
ight
- s
peci
al
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 7
Rig
ht
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
15 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 8
Left
- da
ta e
rrat
ic,
inte
rmitt
ent o
r in
corr
ect
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
8 Le
ft
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
act
ive
for
cert
ain
time
perio
d, th
e w
heel
spe
ed
chat
terin
g fa
ult w
ill b
e re
cogn
ized
.D
etec
tion
is o
nly
activ
e if
vehi
cle
refe
renc
e sp
eed
is m
ore
than
15
km/h
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
4013172a
5 SPN FMI Fault Codes
57Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.42
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
15 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 8
Left
- m
echa
nica
l sy
stem
not
res
pond
ing
prop
erly
or
out o
f ad
just
men
t
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
8 Le
ft
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
h w
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el.
Thi
s er
ror
dete
ctio
n is
pos
sibl
e in
thre
e di
ffere
nt
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
5205
15 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 8
Left
- ab
norm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
8 Le
ft
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
15 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
8 Le
ft -
abno
rmal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
8 Le
ft
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
will
le
ad to
jum
p up
failu
re.
Jum
p up
failu
re w
ill b
e de
tect
ed w
hen
whe
els
star
t ro
tatin
g fr
om s
tand
still
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
15 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
8 Le
ft -
out o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
8 Le
ft
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el. T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e tir
e si
ze e
rror
’ for
a
whe
el if
the
min
imum
of a
ll un
corr
ecte
d w
heel
sp
eeds
in th
e ve
hicl
e is
gre
ater
than
20
km/h
. W
hen
the
prec
ondi
tions
are
sat
isfie
d w
ith a
ny o
f th
e fo
llow
ing
cond
ition
s, th
en th
e im
perm
issi
ble
tire
size
err
or s
hall
be s
et fo
r th
e co
ncer
ned
whe
el:
- The
diff
eren
ce in
cor
rect
ion
valu
es b
etw
een
the
left
and
right
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- C
orre
ctio
n va
lue
of th
e w
heel
is m
ore
than
14%
.- W
heel
spe
ed d
evia
tion
betw
een
the
left
and
right
w
heel
s of
an
axle
exc
eeds
10%
.- W
heel
spe
ed d
evia
tion
of th
e w
heel
com
pare
d to
the
aver
age
fron
t axl
e w
heel
spe
ed is
gre
ater
th
an 1
4%.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
15 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
8 Le
ft -
spec
ial
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 8
Left
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
4013173a
5 SPN FMI Fault Codes
58 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.43
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
16 -
2 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 8
Rig
ht -
dat
a er
ratic
, in
term
itten
t or
inco
rrec
t
Whe
el S
peed
C
hatte
ring
Failu
re a
t A
xle
8 R
ight
Und
esira
ble
jum
ps in
whe
el s
peed
is r
ecog
nize
d as
cha
tterin
g. W
hen
this
beh
avio
r of
cha
tterin
g is
act
ive
for
cert
ain
time
perio
d, th
e w
heel
spe
ed
chat
terin
g fa
ult w
ill b
e re
cogn
ized
.D
etec
tion
is o
nly
activ
e if
vehi
cle
refe
renc
e sp
eed
is m
ore
than
15
km/h
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
fittin
g an
d m
ount
ing
of th
e re
leva
nt w
heel
sp
eed
sens
or. (
Can
vib
ratio
ns c
ause
cha
tterin
g?)
• C
heck
the
rele
vant
foun
datio
n br
ake
for
inad
mis
sibl
e vi
brat
ions
(re
turn
spr
ing
defe
ct?
brak
e lin
ings
loos
ened
?).
5205
16 -
7 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 8
Rig
ht -
mec
hani
cal
syst
em n
ot r
espo
ndin
g pr
oper
ly o
r ou
t of
adju
stm
ent
Whe
el S
peed
P
erm
anen
t Slip
Fa
ilure
at A
xle
8 R
ight
Whe
n a
sens
or is
left
unco
nnec
ted
from
toot
h w
heel
ass
embl
y, n
o w
heel
spe
eds
are
mea
sure
d in
this
par
ticul
ar w
heel
res
ultin
g in
larg
er s
lip
valu
e on
this
whe
el. T
his
cond
ition
will
res
ult i
n pe
rman
ent s
lip fa
ilure
on
this
whe
el.
Thi
s er
ror
dete
ctio
n is
pos
sibl
e in
thre
e di
ffere
nt
way
s:S
ourc
e 1:
Bas
ed o
n w
heel
slip
sig
nal (
lam
bda
sign
al)
from
AB
S c
ontr
ol fu
nctio
n.S
ourc
e 2:
Bas
ed o
n w
heel
spe
ed v
alue
s.S
ourc
e 3:
Whe
n se
nsor
sta
tus
is in
valid
due
to
high
freq
uenc
y si
gnal
mea
sure
d by
sen
sor.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p)
too
wid
e?•
Che
ck th
e w
heel
spe
ed s
enso
r fo
r co
rrec
t vol
tage
out
put.
(Is
volta
ge o
utpu
t suf
ficie
nt?)
• If
sens
or a
nd a
ir ga
p ar
e co
rrec
t, co
ntac
t the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
866
-OnT
rac1
(66
8-72
21).
5205
16 -
9 =
Whe
el S
peed
S
ensi
ng a
nd P
olew
heel
-
Axl
e 8
Rig
ht -
abn
orm
al
upda
te ra
te
Whe
el S
peed
Jum
p D
own
Det
ectio
n at
A
xle
8 R
ight
Jum
p do
wn
failu
re is
det
ecte
d w
hen
whe
el s
peed
dr
ops
sudd
enly
to s
tand
still
from
hig
her
spee
ds.
The
failu
re c
an h
appe
n be
caus
e of
larg
er a
ir ga
p be
twee
n to
oth
whe
el a
nd s
enso
r or
due
to s
enso
r ge
tting
mis
alig
ned
whi
le d
rivin
g.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. Is
the
dist
ance
bet
wee
n to
oth
whe
el a
nd s
enso
r (a
ir ga
p) to
o w
ide
or is
the
sens
or fi
tting
loos
e?•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
16 -
10
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el -
A
xle
8 R
ight
- a
bnor
mal
rate
of
cha
nge
Whe
el S
peed
Jum
p U
p D
etec
tion
at A
xle
8 R
ight
Larg
er a
ir ga
p be
twee
n se
nsor
and
toot
h w
heel
will
le
ad to
jum
p up
failu
re.
Jum
p up
failu
re w
ill b
e de
tect
ed w
hen
whe
els
star
t ro
tatin
g fr
om s
tand
still
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
the
rele
vant
whe
el s
peed
sen
sor
and
its fi
tting
. (Is
th
e se
nsor
fitti
ng lo
ose?
)•
If se
nsor
and
fitti
ng a
re c
orre
ct, c
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at 8
66-O
nTra
c1 (
668-
7221
).
5205
16 -
13
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
8 R
ight
- o
ut o
f ca
libra
tion
Impe
rmis
sabl
e T
ire
Siz
e D
etec
ted
at A
xle
8 R
ight
Whe
n de
viat
ion
of ti
re s
ize
is g
reat
er th
an th
e al
low
able
lim
it, th
e im
perm
issi
ble
tire
size
err
or
shal
l be
set f
or th
e co
ncer
ned
whe
el. T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e tir
e si
ze e
rror
’ for
a
whe
el if
the
min
imum
of a
ll un
corr
ecte
d w
heel
sp
eeds
in th
e ve
hicl
e is
gre
ater
than
20
km/h
. W
hen
the
prec
ondi
tions
are
sat
isfie
d w
ith a
ny o
f th
e fo
llow
ing
cond
ition
s, th
en th
e im
perm
issi
ble
tire
size
err
or s
hall
be s
et fo
r th
e co
ncer
ned
whe
el:
- The
diff
eren
ce in
cor
rect
ion
valu
es b
etw
een
the
left
and
right
whe
els
of a
n ax
le e
xcee
ds 1
0%.
- C
orre
ctio
n va
lue
of th
e w
heel
is m
ore
than
14%
.- W
heel
spe
ed d
evia
tion
betw
een
the
left
and
right
w
heel
s of
an
axle
exc
eeds
10%
.- W
heel
spe
ed d
evia
tion
of th
e w
heel
com
pare
d to
the
aver
age
fron
t axl
e w
heel
spe
ed is
gre
ater
th
an 1
4%.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
4013174a
5 SPN FMI Fault Codes
59Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.44
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
16 -
14
= W
heel
Spe
ed
Sen
sing
and
Pol
ewhe
el
- A
xle
8 R
ight
- s
peci
al
inst
ruct
ions
Impe
rmis
sabl
e D
evia
tion
of T
ire S
ize
Det
ecte
d at
Axl
e 8
Rig
ht
Whe
n w
heel
spe
ed d
evia
tes
from
the
fast
est
whe
el b
y m
ore
than
the
allo
wab
le li
mit,
the
impe
rmis
sibl
e de
viat
ion
erro
r sh
all b
e re
port
ed fo
r th
e co
ncer
ned
whe
el.
The
sof
twar
e sh
all m
onito
r th
e w
heel
spe
eds
only
w
hen
the
min
imum
whe
el s
peed
is 2
0 km
/h o
r hi
gher
.T
he s
oftw
are
shal
l rep
ort ‘
impe
rmis
sibl
e de
viat
ion’
er
ror
for
a w
heel
if th
e co
mpe
nsat
ed s
peed
of
conc
erne
d w
heel
dev
iate
s fr
om th
e m
axim
um
com
pens
ated
whe
el s
peed
by
mor
e th
an 1
0%.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
all
tires
of t
he v
ehic
le c
once
rnin
g co
rrec
t siz
e.•
Che
ck th
e E
OL
para
met
ers
(tire
circ
umfe
renc
e, to
oth
whe
el te
eth
num
bers
).
5205
17 -
13
= T
ire S
ize
Com
pens
atio
n -
Mem
oryb
it or
Par
amet
erfa
ilure
- o
ut o
f ca
libra
tion
Par
amet
er e
rror
of
whe
el d
iam
eter
s an
d po
lew
heel
teet
h nu
mbe
r
Whe
n th
e co
nfigu
red
tire
circ
umfe
renc
e of
a w
heel
is
bey
ond
the
defin
ed li
mits
for
the
confi
gure
d to
oth
whe
el te
eth
coun
t or
if th
e to
oth
whe
el te
eth
coun
t is
inva
lid, t
his
erro
r sh
all b
e se
t.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
the
rele
vant
EO
L pa
ram
eter
s an
d co
rrec
t the
m.
5205
17 -
31
= T
ire S
ize
Com
pens
atio
n -
Mem
oryb
it or
Par
amet
erfa
ilure
-
cond
ition
exi
sts
Tire
Siz
e C
ompe
nsat
ion
Mem
ory
Bit
If an
‘im
perm
issi
ble
Tire
Siz
e’ e
rror
is d
etec
ted
by T
sc in
the
curr
ent i
gniti
on c
ycle
, the
err
or
info
rmat
ion
shou
ld b
e st
ored
for
use
in fu
ture
ig
nitio
n cy
cles
.T
he m
odul
e sh
all r
epor
t ‘T
scM
emor
yBitE
rror
’ if t
he
stor
age
para
met
er ‘P
RM
stT
ireA
djm
tMem
Bit’
is s
et
and
if an
y of
the
follo
win
g co
nditi
ons
is s
atis
fied:
1. A
cor
rect
ion
valu
e re
set r
eque
st is
not
rec
eive
d til
l 120
ms
sinc
e ig
nitio
n O
N.
2. A
cor
rect
ion
valu
e re
set r
eque
st is
pre
sent
eve
n af
ter
480
ms
sinc
e ig
nitio
n O
N.
Yello
w D
river
War
ning
, A
BS
par
tly o
r co
mpl
etel
y sw
itche
d of
f
• T
his
DT
C o
nly
indi
cate
s th
at a
noth
er fa
ilure
in th
e w
heel
sp
eed
sens
ing
was
det
ecte
d be
fore
. It i
s ne
cess
ary
to
repa
ir th
e w
heel
spe
ed fa
ilure
s th
at a
re s
tore
d in
the
failu
re m
emor
y.
5205
20 -
3 =
AB
S G
roun
d (F
ront
Axl
e) -
vol
tage
abo
ve
norm
al o
r sh
orte
d hi
gh
Failu
re d
etec
tion
'Sho
rtU
b' a
t A
bsG
roun
d (F
ront
A
xle)
A s
hort
circ
uit t
o hi
gh le
vel a
t the
rel
evan
t low
side
-sw
itch
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S p
artly
sw
itche
d of
f•
Che
ck w
iring
of r
elev
ant v
alve
s/ac
tuat
ors.
(Is
ther
e a
shor
t circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5205
20 -
4 =
AB
S G
roun
d (F
ront
Axl
e) -
vol
tage
bel
ow
norm
al o
r sh
orte
d lo
w
Failu
re d
etec
tion
'Sho
rtG
nd' a
t A
bsG
roun
d (F
ront
A
xle)
A s
hort
circ
uit t
o pe
rman
ent G
ND
-leve
l at t
he
rele
vant
low
side
-sw
itch
is d
etec
ted:
- A
fter
150
ms
(if th
e lo
wsi
de s
witc
h is
ope
n).
- A
fter
2000
ms
(if th
e lo
wsi
de s
witc
h is
clo
sed)
.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ves/
actu
ator
s. (
Is th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t val
ves/
actu
ator
s. (
Is th
ere
an in
tern
al
shor
t circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5205
21 -
3 =
AB
S G
roun
d (D
rive
Axl
e) -
vol
tage
abo
ve
norm
al o
r sh
orte
d hi
gh
Failu
re d
etec
tion
'Sho
rtU
b' a
t A
bsG
roun
d (D
rive
Axl
e)
A s
hort
circ
uit t
o hi
gh le
vel a
t the
rel
evan
t low
side
-sw
itch
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• C
heck
wiri
ng o
f rel
evan
t val
ves/
actu
ator
s. (
Is th
ere
a sh
ort c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5205
21 -
4 =
AB
S G
roun
d (D
rive
Axl
e) -
vol
tage
bel
ow
norm
al o
r sh
orte
d lo
w
Failu
re d
etec
tion
'Sho
rtG
nd' a
t A
bsG
roun
d (D
rive
Axl
e)
A s
hort
circ
uit t
o pe
rman
ent G
ND
-leve
l at t
he
rele
vant
low
side
-sw
itch
is d
etec
ted:
- A
fter
150
ms
(if th
e lo
wsi
de s
witc
h is
ope
n).
- A
fter
2000
ms
(if th
e lo
wsi
de s
witc
h is
clo
sed)
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ves/
actu
ator
s. (
Is th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t val
ves/
actu
ator
s. (
Is th
ere
an in
tern
al
shor
t circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5205
22 -
3 =
AB
S G
roun
d (I
nter
med
iate
Axl
e) -
vol
tage
ab
ove
norm
al o
r sh
orte
d hi
gh
Failu
re d
etec
tion
'Sho
rtU
b' a
t A
bsG
roun
d (I
nter
med
iate
Axl
e)
A s
hort
circ
uit t
o hi
gh le
vel a
t the
rel
evan
t low
side
-sw
itch
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• C
heck
wiri
ng o
f rel
evan
t val
ves/
actu
ator
s. (
Is th
ere
a sh
ort c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013175a
5 SPN FMI Fault Codes
60 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.45
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
22 -
4 =
AB
S G
roun
d (I
nter
med
iate
Axl
e) -
vol
tage
be
low
nor
mal
or
shor
ted
low
Failu
re d
etec
tion
'Sho
rtG
nd' a
t A
bsG
roun
d (I
nter
med
iate
Axl
e)
A s
hort
circ
uit t
o pe
rman
ent G
ND
-leve
l at t
he
rele
vant
low
side
-sw
itch
is d
etec
ted:
- A
fter
150
ms
(if th
e lo
wsi
de s
witc
h is
ope
n).
- A
fter
2000
ms
(if th
e lo
wsi
de s
witc
h is
clo
sed)
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ves/
actu
ator
s. (
Is th
ere
a sh
ort c
ircui
t?)
• C
heck
rel
evan
t val
ves/
actu
ator
s. (
Is th
ere
an in
tern
al
shor
t circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5205
23 -
3 =
AU
X G
roun
d (T
raile
r M
odul
ator
) -
volta
ge
abov
e no
rmal
or
shor
ted
high
Failu
re d
etec
tion
'Sho
rtU
b' a
t A
uxG
roun
d (T
raile
r M
odul
ator
)
A s
hort
circ
uit t
o hi
gh le
vel a
t the
rel
evan
t low
side
-sw
itch
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S fu
lly a
vaila
ble
• C
heck
wiri
ng o
f rel
evan
t val
ves/
actu
ator
s. (
Is th
ere
a sh
ort c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5205
23 -
4 =
AU
X G
roun
d (T
raile
r M
odul
ator
) -
volta
ge
belo
w n
orm
al o
r sh
orte
d lo
w
Failu
re d
etec
tion
'Sho
rtG
nd' a
t Aux
iliar
y O
utpu
t Gro
und
(Tra
iler
Mod
ulat
or)
A s
hort
circ
uit t
o pe
rman
ent G
ND
-leve
l at t
he
rele
vant
low
side
-sw
itch
is d
etec
ted:
- A
fter
150
ms
(if th
e lo
wsi
de s
witc
h is
ope
n).
- A
fter
2000
ms
(if th
e lo
wsi
de s
witc
h is
clo
sed)
.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck w
iring
of r
elev
ant v
alve
s/ac
tuat
ors.
(Is
ther
e a
shor
t circ
uit?
)•
Che
ck r
elev
ant v
alve
s/ac
tuat
ors.
(Is
ther
e an
inte
rnal
sh
ort c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5205
24 -
3 =
AU
X G
roun
d (3
/2 V
alve
Gov
erno
r/R
egen
) -
volta
ge a
bove
nor
mal
or
shor
ted
high
Failu
re d
etec
tion
'Sho
rtU
b' a
t A
uxG
roun
d (3
/2 V
alve
G
over
nor/
Reg
en)
A s
hort
circ
uit t
o hi
gh le
vel a
t the
rel
evan
t low
side
-sw
itch
is d
etec
ted
afte
r 15
0 m
s.Ye
llow
Driv
er W
arni
ng,
AB
S fu
lly a
vaila
ble
• C
heck
wiri
ng o
f rel
evan
t val
ves/
actu
ator
s. (
Is th
ere
a sh
ort c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5205
24 -
4 =
AU
X G
roun
d (3
/2 V
alve
Gov
erno
r/R
egen
) -
volta
ge b
elow
nor
mal
or
shor
ted
low
Failu
re d
etec
tion
'Sho
rtG
nd' a
t Aux
iliar
y O
utpu
t Gro
und
(3/2
Va
lve
Gov
erno
r/R
egen
)
A s
hort
circ
uit t
o pe
rman
ent G
ND
-leve
l at t
he
rele
vant
low
side
-sw
itch
is d
etec
ted:
- A
fter
150
ms
(if th
e lo
wsi
de s
witc
h is
ope
n).
- A
fter
2000
ms
(if th
e lo
wsi
de s
witc
h is
clo
sed)
.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck w
iring
of r
elev
ant v
alve
s/ac
tuat
ors.
(Is
ther
e a
shor
t circ
uit?
)•
Che
ck r
elev
ant v
alve
s/ac
tuat
ors.
(Is
ther
e an
inte
rnal
sh
ort c
ircui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5205
25 -
3 =
Sol
enoi
d Va
lve/
Diff
-Val
ve (
Driv
e A
xle
AB
V)
- vo
ltage
abo
ve
norm
al o
r sh
orte
d hi
gh
Failu
re d
etec
tion
'Sho
rtU
b' a
t S
olen
oidV
alve
(D
rive
Axl
e A
BV
)
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5205
25 -
4 =
Sol
enoi
d Va
lve/
Diff
-Val
ve (
Driv
e A
xle
AB
V)
- vo
ltage
bel
ow n
orm
al
or s
hort
ed lo
w
Failu
re d
etec
tion
'Sho
rtG
nd' a
t S
olen
oidV
alve
(D
rive
Axl
e A
BV
)
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s.R
emar
k: A
sho
rted
load
als
o le
ads
to a
sho
rt to
G
ND
failu
re. A
sho
rted
load
is d
etec
ted:
-
Afte
r 20
0 m
s af
ter
igni
tion-
on a
nd a
lso
if va
lve
is
activ
ated
.-
Afte
r 10
00 m
s if
valv
e is
not
act
ivat
ed.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
sho
rt
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5205
25 -
5 =
Sol
enoi
d Va
lve/
Diff
-Val
ve (
Driv
e A
xle
AB
V)
- cu
rren
t bel
ow n
orm
al
or o
pen
circ
uit
Failu
re d
etec
tion
'Inte
rrup
tion'
at
Sol
enoi
dVal
ve (
Driv
e A
xle
AB
V)
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t par
amet
er s
ettin
g. (
Is th
e re
leva
nt
valv
e/ac
tuat
or e
quip
ped?
)•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an
inte
rrup
tion?
)•
Che
ck r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an in
tern
al
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5205
25 -
13
= S
olen
oid
Valv
e/D
iff-V
alve
(D
rive
Axl
e A
BV
) -
out o
f cal
ibra
tion
Failu
re d
etec
tion
'Ove
rEqu
ippe
d' a
t S
olen
oidV
alve
(D
rive
Axl
e A
BV
)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
4013176a
5 SPN FMI Fault Codes
61Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.46
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
26 -
3 =
Sol
enoi
d Va
lve/
Diff
-Val
ve (
Fron
t A
xle
AB
V)
- vo
ltage
abo
ve
norm
al o
r sh
orte
d hi
gh
Failu
re d
etec
tion
'Sho
rtU
b' a
t S
olen
oidV
alve
(Fr
ont
Axl
e R
ight
)
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5205
26 -
4 =
Sol
enoi
d Va
lve/
Diff
-Val
ve (
Fron
t Axl
e A
BV
) -
volta
ge b
elow
nor
mal
or
sho
rted
low
Failu
re d
etec
tion
'Sho
rtG
nd' a
t S
olen
oidV
alve
(Fr
ont
Axl
e R
ight
)
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s.R
emar
k: A
sho
rted
load
als
o le
ads
to a
sho
rt to
G
ND
failu
re. A
sho
rted
load
is d
etec
ted:
-
Afte
r 20
0 m
s af
ter
igni
tion-
on a
nd a
lso
if va
lve
is
activ
ated
.-
Afte
r 10
00 m
s if
valv
e is
not
act
ivat
ed.
Yello
w D
river
War
ning
, A
BS
par
tly s
witc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
sho
rt
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5205
26 -
5 =
Sol
enoi
d Va
lve/
Diff
-Val
ve (
Fron
t Axl
e A
BV
) -
curr
ent b
elow
nor
mal
or
ope
n ci
rcui
t
Failu
re d
etec
tion
'Inte
rrup
tion'
at
Sol
enoi
dVal
ve (
Fron
t A
xle
AB
V)
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t par
amet
er s
ettin
g. (
Is th
e re
leva
nt
valv
e/ac
tuat
or e
quip
ped?
)•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an
inte
rrup
tion?
)•
Che
ck r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an in
tern
al
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5205
26 -
13
= S
olen
oid
Valv
e/D
iff-V
alve
(Fr
ont A
xle
AB
V)
- ou
t of c
alib
ratio
n
Failu
re d
etec
tion
'Ove
rEqu
ippe
d' a
t S
olen
oidV
alve
(Fr
ont
Axl
e A
BV
)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5205
27 -
3 =
Sol
enoi
d Va
lve/
Diff
-Val
ve (
Trai
ler
AB
V)
- vo
ltage
abo
ve
norm
al o
r sh
orte
d hi
gh
Failu
re d
etec
tion
'Sho
rtU
b' a
t S
olen
oidV
alve
(Tr
aile
r A
BV
)
A s
hort
circ
uit t
o U
B o
f the
rel
evan
t act
uato
r is
det
ecte
d in
act
ive
and
inac
tive
stat
es. T
he
dete
ctio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5205
27 -
4 =
Sol
enoi
d Va
lve/
Diff
-Val
ve (
Trai
ler
AB
V)
- vo
ltage
bel
ow n
orm
al
or s
hort
ed lo
w
Failu
re d
etec
tion
'Sho
rtG
nd' a
t S
olen
oidV
alve
(Tr
aile
r A
BV
)
A s
hort
circ
uit t
o G
ND
of t
he r
elev
ant a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
de
tect
ion
time
is 2
00 m
s.R
emar
k: A
sho
rted
load
als
o le
ads
to a
sho
rt to
G
ND
failu
re. A
sho
rted
load
is d
etec
ted:
-
Afte
r 20
0 m
s af
ter
igni
tion-
on a
nd a
lso
if va
lve
is
activ
ated
.-
Afte
r 10
00 m
s if
valv
e is
not
act
ivat
ed.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e a
shor
t ci
rcui
t?)
• C
heck
rel
evan
t val
ve/a
ctua
tor.
(Is
ther
e an
inte
rnal
sho
rt
circ
uit?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5205
27 -
5 =
Sol
enoi
d Va
lve/
Diff
-Val
ve (
Trai
ler
AB
V)
- cu
rren
t bel
ow n
orm
al
or o
pen
circ
uit
Failu
re d
etec
tion
'Inte
rrup
tion'
at
Sol
enoi
dVal
ve (
Trai
ler
AB
V)
An
inte
rrup
tion
of th
e re
leva
nt a
ctua
tor
is d
etec
ted
in a
ctiv
e an
d in
activ
e st
ates
. The
det
ectio
n tim
e is
200
ms.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck fo
r co
rrec
t par
amet
er s
ettin
g. (
Is th
e re
leva
nt
valv
e/ac
tuat
or e
quip
ped?
)•
Che
ck w
iring
of r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an
inte
rrup
tion?
)•
Che
ck r
elev
ant v
alve
/act
uato
r. (I
s th
ere
an in
tern
al
inte
rrup
tion?
)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5205
27 -
13
= S
olen
oid
Valv
e/D
iff-V
alve
(Tr
aile
r A
BV
) -
out o
f cal
ibra
tion
Failu
re d
etec
tion
'Ove
rEqu
ippe
d' a
t S
olen
oidV
alve
(Tr
aile
r A
BV
)
A fa
ilure
is d
etec
ted
if a
com
pone
nt is
con
nect
ed
to th
e E
CU
, but
it is
not
act
ivat
ed in
the
para
met
er
setti
ngs.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
for
corr
ect p
aram
eter
set
ting.
(Is
the
rele
vant
va
lve/
actu
ator
equ
ippe
d?)
• C
heck
wiri
ng o
f rel
evan
t val
ve/a
ctua
tor.
(Is
EC
U p
in
open
?)•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
4013177a
5 SPN FMI Fault Codes
62 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.47
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5205
30 -
0 =
Ove
rHea
ting
- P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(Fr
ont A
xle
Left)
- d
ata
valid
, but
abo
ve n
orm
al
oper
atio
n ra
nge
(mos
t se
vere
leve
l)
Ove
rhea
ting
at A
BS
Va
lve
(Fro
nt A
xle
Left)
/Hig
h Le
vel
An
over
heat
ing
failu
re o
f the
rel
evan
t AB
S v
alve
is
set i
f the
AB
S v
alve
was
act
ivat
ed fo
r a
long
tim
e so
the
tem
pera
ture
lim
it (c
ritic
al s
econ
d le
vel)
was
re
ache
d.T
ime
for
criti
cal l
evel
:-
200
s (1
2V S
yste
m)
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
AB
S v
alve
s w
ere
over
heat
ed. R
educ
e ac
tivat
ion
time
espe
cial
ly o
f hill
hold
er a
nd h
altb
rake
func
tion.
5205
30 -
15
= O
verH
eatin
g -
Pre
ssur
e M
odul
atio
n Va
lve
AB
S (
Fron
t Axl
e Le
ft) -
dat
a va
lid, b
ut a
bove
nor
mal
op
erat
ion
rang
e (le
ast
seve
re le
vel)
Ove
rhea
ting
at A
BS
Va
lve
(Fro
nt A
xle
Left)
/Low
Lev
el
An
over
heat
ing
failu
re o
f the
rel
evan
t AB
S v
alve
is
set i
f the
AB
S v
alve
was
act
ivat
ed fo
r a
long
tim
e so
the
tem
pera
ture
lim
it (p
rew
arni
ng le
vel)
was
re
ache
d.T
ime
for
prew
arni
ng le
vel:
- 18
0 s
(12V
Sys
tem
)
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
AB
S v
alve
s w
ere
over
heat
ed. R
educ
e ac
tivat
ion
time
espe
cial
ly o
f hill
hold
er a
nd h
altb
rake
func
tion.
5205
31 -
0 =
Ove
rHea
ting
- P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(Fr
ont A
xle
Rig
ht)
- da
ta v
alid
, but
abo
ve n
orm
al
oper
atio
n ra
nge
(mos
t se
vere
leve
l)
Ove
rhea
ting
at A
BS
Va
lve
(Fro
nt A
xle
Rig
ht)/
Hig
h Le
vel
An
over
heat
ing
failu
re o
f the
rel
evan
t AB
S v
alve
is
set i
f the
AB
S v
alve
was
act
ivat
ed fo
r a
long
tim
e so
the
tem
pera
ture
lim
it (c
ritic
al s
econ
d le
vel)
was
re
ache
d.T
ime
for
criti
cal l
evel
:-
200
s (1
2V S
yste
m)
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
AB
S v
alve
s w
ere
over
heat
ed. R
educ
e ac
tivat
ion
time
espe
cial
ly o
f hill
hold
er a
nd h
altb
rake
func
tion.
5205
31 -
15
= O
verH
eatin
g -
Pre
ssur
e M
odul
atio
n Va
lve
AB
S (
Fron
t Axl
e R
ight
) -
data
val
id, b
ut a
bove
nor
mal
op
erat
ion
rang
e (le
ast
seve
re le
vel)
Ove
rhea
ting
at A
BS
Va
lve
(Fro
nt A
xle
Rig
ht)/
Low
Lev
el
An
over
heat
ing
failu
re o
f the
rel
evan
t AB
S v
alve
is
set i
f the
AB
S v
alve
was
act
ivat
ed fo
r a
long
tim
e so
the
tem
pera
ture
lim
it (p
rew
arni
ng le
vel)
was
re
ache
d.T
ime
for
prew
arni
ng le
vel:
- 18
0 s
(12V
Sys
tem
)
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
AB
S v
alve
s w
ere
over
heat
ed. R
educ
e ac
tivat
ion
time
espe
cial
ly o
f hill
hold
er a
nd h
altb
rake
func
tion.
5205
32 -
0 =
Ove
rHea
ting
- P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(D
rive
Axl
e Le
ft) -
dat
a va
lid, b
ut a
bove
nor
mal
op
erat
ion
rang
e (m
ost
seve
re le
vel)
Ove
rhea
ting
at A
BS
Va
lve
(Driv
e A
xle
Left)
/Hig
h Le
vel
An
over
heat
ing
failu
re o
f the
rel
evan
t AB
S v
alve
is
set i
f the
AB
S v
alve
was
act
ivat
ed fo
r a
long
tim
e so
the
tem
pera
ture
lim
it (c
ritic
al s
econ
d le
vel)
was
re
ache
d.T
ime
for
criti
cal l
evel
:-
200
s (1
2V S
yste
m)
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
AB
S v
alve
s w
ere
over
heat
ed. R
educ
e ac
tivat
ion
time
espe
cial
ly o
f hill
hold
er a
nd h
altb
rake
func
tion.
5205
32 -
15
= O
verH
eatin
g -
Pre
ssur
e M
odul
atio
n Va
lve
AB
S (
Driv
e A
xle
Left)
- d
ata
valid
, but
abo
ve n
orm
al
oper
atio
n ra
nge
(leas
t se
vere
leve
l)
Ove
rhea
ting
at A
BS
Va
lve
(Driv
e A
xle
Left)
/Low
Lev
el
An
over
heat
ing
failu
re o
f the
rel
evan
t AB
S v
alve
is
set i
f the
AB
S v
alve
was
act
ivat
ed fo
r a
long
tim
e so
the
tem
pera
ture
lim
it (p
rew
arni
ng le
vel)
was
re
ache
d.T
ime
for
prew
arni
ng le
vel:
- 18
0 s
(12V
Sys
tem
)
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
AB
S v
alve
s w
ere
over
heat
ed. R
educ
e ac
tivat
ion
time
espe
cial
ly o
f hill
hold
er a
nd h
altb
rake
func
tion.
5205
33 -
0 =
Ove
rHea
ting
- P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(D
rive
Axl
e R
ight
) -
data
val
id, b
ut a
bove
nor
mal
op
erat
ion
rang
e (m
ost
seve
re le
vel)
Ove
rhea
ting
at A
BS
Va
lve
(Driv
e A
xle
Rig
ht)/
Hig
h Le
vel
An
over
heat
ing
failu
re o
f the
rel
evan
t AB
S v
alve
is
set i
f the
AB
S v
alve
was
act
ivat
ed fo
r a
long
tim
e so
the
tem
pera
ture
lim
it (c
ritic
al s
econ
d le
vel)
was
re
ache
d.T
ime
for
criti
cal l
evel
:-
200
s (1
2V S
yste
m)
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
AB
S v
alve
s w
ere
over
heat
ed. R
educ
e ac
tivat
ion
time
espe
cial
ly o
f hill
hold
er a
nd h
altb
rake
func
tion.
4013178a
5 SPN FMI Fault Codes
63Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.48D
TC S
PN
FM
IFa
ilure
Det
ectio
n N
ame
Failu
re D
etec
tion
Des
crip
tion
War
ning
and
Sys
tem
R
eact
ion
Rep
air
5205
33 -
15
= O
verH
eatin
g -
Pre
ssur
e M
odul
atio
n Va
lve
AB
S (
Driv
e A
xle
Rig
ht)
- da
ta v
alid
, but
abo
ve n
orm
al
oper
atio
n ra
nge
(leas
t se
vere
leve
l)
Ove
rhea
ting
at A
BS
Va
lve
(Driv
e A
xle
Rig
ht)/
Low
Lev
el
An
over
heat
ing
failu
re o
f the
rel
evan
t AB
S v
alve
is
set i
f the
AB
S v
alve
was
act
ivat
ed fo
r a
long
tim
e so
the
tem
pera
ture
lim
it (p
rew
arni
ng le
vel)
was
re
ache
d.T
ime
for
prew
arni
ng le
vel:
- 18
0 s
(12V
Sys
tem
)
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
AB
S v
alve
s w
ere
over
heat
ed. R
educ
e ac
tivat
ion
time
espe
cial
ly o
f hill
hold
er a
nd h
altb
rake
func
tion.
5205
34 -
0 =
Ove
rHea
ting
- P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(In
term
edia
te A
xle
Left)
- d
ata
valid
, but
abo
ve
norm
al o
pera
tion
rang
e (m
ost s
ever
e le
vel)
Ove
rhea
ting
at A
BS
Va
lve
(Int
erm
edia
te
Axl
e Le
ft)/H
igh
Leve
l
An
over
heat
ing
failu
re o
f the
rel
evan
t AB
S v
alve
is
set i
f the
AB
S v
alve
was
act
ivat
ed fo
r a
long
tim
e so
the
tem
pera
ture
lim
it (c
ritic
al s
econ
d le
vel)
was
re
ache
d.T
ime
for
criti
cal l
evel
:-
200
s (1
2V S
yste
m)
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
AB
S v
alve
s w
ere
over
heat
ed. R
educ
e ac
tivat
ion
time
espe
cial
ly o
f hill
hold
er a
nd h
altb
rake
func
tion.
5205
34 -
15
= O
verH
eatin
g -
Pre
ssur
e M
odul
atio
n Va
lve
AB
S (
Inte
rmed
iate
Axl
e Le
ft) -
dat
a va
lid, b
ut a
bove
no
rmal
ope
ratio
n ra
nge
(leas
t sev
ere
leve
l)
Ove
rhea
ting
at A
BS
Va
lve
(Int
erm
edia
te
Axl
e Le
ft)/L
ow L
evel
An
over
heat
ing
failu
re o
f the
rel
evan
t AB
S v
alve
is
set i
f the
AB
S v
alve
was
act
ivat
ed fo
r a
long
tim
e so
the
tem
pera
ture
lim
it (p
rew
arni
ng le
vel)
was
re
ache
d.T
ime
for
prew
arni
ng le
vel:
- 18
0 s
(12V
Sys
tem
)
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
AB
S v
alve
s w
ere
over
heat
ed. R
educ
e ac
tivat
ion
time
espe
cial
ly o
f hill
hold
er a
nd h
altb
rake
func
tion.
5205
35 -
0 =
Ove
rHea
ting
- P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(In
term
edia
te A
xle
Rig
ht) -
dat
a va
lid, b
ut a
bove
no
rmal
ope
ratio
n ra
nge
(mos
t sev
ere
leve
l)
Ove
rhea
ting
at A
BS
Va
lve
(Int
erm
edia
te
Axl
e R
ight
)/H
igh
Leve
l
An
over
heat
ing
failu
re o
f the
rel
evan
t AB
S v
alve
is
set i
f the
AB
S v
alve
was
act
ivat
ed fo
r a
long
tim
e so
the
tem
pera
ture
lim
it (c
ritic
al s
econ
d le
vel)
was
re
ache
d.T
ime
for
criti
cal l
evel
:-
200
s (1
2V S
yste
m)
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
AB
S v
alve
s w
ere
over
heat
ed. R
educ
e ac
tivat
ion
time
espe
cial
ly o
f hill
hold
er a
nd h
altb
rake
func
tion.
5205
35 -
15
= O
verH
eatin
g -
Pre
ssur
e M
odul
atio
n Va
lve
AB
S (
Inte
rmed
iate
Axl
e R
ight
) - d
ata
valid
, but
abo
ve
norm
al o
pera
tion
rang
e (le
ast s
ever
e le
vel)
Ove
rhea
ting
at A
BS
Va
lve
(Int
erm
edia
te
Axl
e R
ight
)/Lo
w L
evel
An
over
heat
ing
failu
re o
f the
rel
evan
t AB
S v
alve
is
set i
f the
AB
S v
alve
was
act
ivat
ed fo
r a
long
tim
e so
the
tem
pera
ture
lim
it (p
rew
arni
ng le
vel)
was
re
ache
d.T
ime
for
prew
arni
ng le
vel:
- 18
0 s
(12V
Sys
tem
)
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
AB
S v
alve
s w
ere
over
heat
ed. R
educ
e ac
tivat
ion
time
espe
cial
ly o
f hill
hold
er a
nd h
altb
rake
func
tion.
5205
36 -
0 =
Ove
rHea
ting
- P
ress
ure
Mod
ulat
ion
Valv
e A
BS
(Tr
aile
r C
ontr
ol)
- da
ta
valid
, but
abo
ve n
orm
al
oper
atin
g ra
nge
(mos
t se
vere
leve
l)
Ove
rhea
ting
at A
BS
Va
lve
(Tra
iler
Con
trol
)/H
igh
Leve
l
An
over
heat
ing
failu
re o
f the
rel
evan
t AB
S v
alve
is
set i
f the
AB
S v
alve
was
act
ivat
ed fo
r a
long
tim
e so
the
tem
pera
ture
lim
it (c
ritic
al s
econ
d le
vel)
was
re
ache
d.T
ime
for
criti
cal l
evel
:-
200
s (1
2V S
yste
m)
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
AB
S v
alve
s w
ere
over
heat
ed. R
educ
e ac
tivat
ion
time
espe
cial
ly o
f hill
hold
er a
nd h
altb
rake
func
tion.
5205
36 -
15
= O
verH
eatin
g -
Pre
ssur
e M
odul
atio
n Va
lve
AB
S (
Trai
ler
Con
trol
) -
data
va
lid, b
ut a
bove
nor
mal
op
erat
ing
rang
e (le
ast
seve
re le
vel)
Ove
rhea
ting
at A
BS
Va
lve
(Tra
iler
Con
trol
)/Lo
w L
evel
An
over
heat
ing
failu
re o
f the
rel
evan
t AB
S v
alve
is
set i
f the
AB
S v
alve
was
act
ivat
ed fo
r a
long
tim
e so
the
tem
pera
ture
lim
it (p
rew
arni
ng le
vel)
was
re
ache
d.T
ime
for
prew
arni
ng le
vel:
- 18
0 s
(12V
Sys
tem
)
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
AB
S v
alve
s w
ere
over
heat
ed. R
educ
e ac
tivat
ion
time
espe
cial
ly o
f hill
hold
er a
nd h
altb
rake
func
tion.
5208
00 -
2 =
Gyr
o Te
mpe
ratu
re S
igna
l - d
ata
erra
tic, i
nter
mitt
ent o
r in
corr
ect
Yaw
Rat
e Te
mpe
ratu
re R
ange
C
heck
The
failu
re is
det
ecte
d if
the
valid
rang
e of
the
tem
pera
ture
sen
sor
sign
al w
as le
ft.Ye
llow
Driv
er W
arni
ng,
AB
S fu
lly a
vaila
ble
• C
heck
and
rep
lace
the
ES
C m
odul
e.
4013179a
5 SPN FMI Fault Codes
64 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.49
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5208
00 -
10
= G
yro
Tem
pera
ture
Sig
nal -
ab
norm
al ra
te o
f cha
nge
Yaw
Rat
e Te
mpe
ratu
re G
radi
ent
Che
ck
The
failu
re is
det
ecte
d if
the
grad
ient
of t
he
tem
pera
ture
sen
sor
sign
al w
as to
o hi
gh.
Yello
w D
river
War
ning
, A
BS
fully
ava
ilabl
e•
Che
ck a
nd r
epla
ce th
e E
SC
mod
ule.
5230
00 -
2 =
Inva
lid
Par
amet
ers
Par
t 1 -
dat
a er
ratic
, int
erm
itten
t or
inco
rrec
t
Gen
eric
Che
ck fo
r im
plau
sibl
e E
OL
Par
amet
ers
The
gen
eric
par
amet
er p
laus
ibili
ty c
heck
eva
luat
es
if th
e E
OL
para
met
ers
are
com
plet
e an
d pl
ausi
ble.
If
a pa
ram
eter
inco
mpa
tibili
ty w
as d
etec
ted,
de
taile
d in
form
atio
n ab
out t
he in
com
patib
le
para
met
er v
alue
will
be
stor
ed. T
his
para
met
er
inco
mpa
tibili
ty in
form
atio
n ca
n be
rea
d ou
t to
iden
tify
the
faul
ty p
aram
eter
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
the
EO
L pa
ram
eter
s an
d co
rrec
t the
m.
• R
emar
k: If
an
inco
mpa
tibili
ty w
as d
etec
ted,
spe
cial
in
form
atio
n ab
out i
mpl
ausi
ble
para
met
er v
alue
is s
tore
d.
Thi
s in
form
atio
n ca
n be
rea
d ou
t by
diag
nosi
s to
loca
lize
the
faul
ty p
aram
eter
(se
rvic
e 22
1C
08
‘Prm
Pla
usy
Failu
re C
ode’
). T
he d
escr
iptio
n of
the
num
bers
can
be
foun
d in
a s
epar
ate
list ‘
Par
amet
er P
laus
ibili
ty F
ailu
re ID
’.
5230
00 -
22
= In
valid
P
aram
eter
s P
art 1
-
rese
rved
(22
)
Inva
lid P
aram
eter
S
ettin
g fo
r C
OG
-fu
nctio
n (c
ente
r of
gr
avity
)
The
par
amet
ers
for
the
CO
G fu
nctio
n (c
alcu
latio
n of
cen
ter
of g
ravi
ty)
are
not s
et c
orre
ctly
.Ye
llow
ES
C W
arni
ng,
AB
S fu
lly a
vaila
ble,
E
SC
sw
itche
d of
f
• C
heck
the
rele
vant
EO
L pa
ram
eter
s an
d co
rrec
t the
m.
5230
00 -
23
= In
valid
P
aram
eter
s P
art 1
-
rese
rved
(23
)
Inva
lid P
aram
eter
S
ettin
g fo
r R
SC
-fu
nctio
n (r
oll s
tabi
lity
cont
rol)
Thi
s pa
ram
eter
failu
re is
set
if th
e fo
llow
ing
cond
ition
exi
sts:
- P
RD
stVe
hWith
Aw
d.va
lue
= 1
Yello
w E
SC
War
ning
, A
BS
fully
ava
ilabl
e,
ES
C s
witc
hed
off
• C
heck
the
rele
vant
EO
L pa
ram
eter
s an
d co
rrec
t the
m.
5230
00 -
28
= In
valid
P
aram
eter
s P
art 1
-
rese
rved
(28
)
Par
amet
er e
rror
of
supp
ly v
olta
ge le
vel
thre
shol
ds
It is
che
cked
if th
e th
resh
olds
for
the
diffe
rent
vo
ltage
leve
ls a
re in
cor
rect
ord
er.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
the
rele
vant
EO
L pa
ram
eter
s an
d co
rrec
t the
m.
5230
00 -
29
= In
valid
P
aram
eter
s P
art 1
-
rese
rved
(29
)
Par
amet
er e
rror
of
acce
lera
tor
peda
l low
id
le s
witc
h th
resh
olds
It is
che
cked
if th
e th
resh
olds
for
the
hyst
eres
is
are
set c
orre
ctly
. The
sof
twar
e se
ts a
par
amet
er
erro
r w
hen
the
thre
shol
ds a
re n
ot in
the
follo
win
g or
der ‘
Thd
On
< T
hdO
ff’.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
the
rele
vant
EO
L pa
ram
eter
s an
d co
rrec
t the
m.
5230
00 -
30
= In
valid
P
aram
eter
s P
art 1
-
rese
rved
(30
)
Par
amet
er e
rror
of
acce
lera
tor
peda
l po
sitio
n th
resh
olds
It is
che
cked
if th
e th
resh
olds
for
the
hyst
eres
is
are
set c
orre
ctly
. T
he s
oftw
are
sets
a p
aram
eter
er
ror
whe
n th
e th
resh
olds
are
not
in th
e fo
llow
ing
orde
r ‘T
hdO
ff <
Thd
On’
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
heck
the
rele
vant
EO
L pa
ram
eter
s an
d co
rrec
t the
m.
5231
00 -
22
= S
afet
y M
onito
r - W
heel
Spe
ed
Sig
nals
- r
eser
ved
(22)
Saf
ety
Mon
itor
for W
heel
spee
d C
alcu
latio
n (F
ront
A
xle
Left)
A m
onito
r fa
ilure
of t
he r
elev
ant w
heel
spe
ed
calc
ulat
ion
is d
etec
ted
if:-
Cou
nter
val
ue is
0 a
nd w
heel
spe
ed v
alue
is n
ot
betw
een
0 m
/s a
nd 1
m/s
. -
Cou
nter
val
ue is
con
stan
t for
mor
e th
an 1
80 m
s an
d w
heel
spe
ed v
alue
is n
ot b
etw
een
0m/s
and
1
m/s
.-
Cou
nter
val
ue is
not
con
stan
t for
mor
e th
an
180
ms
and
not 0
and
whe
el s
peed
val
ue is
not
be
twee
n m
in_W
heel
spe
ed a
nd m
ax_W
heel
sp
eed.
Rem
ark:
The
mon
itor
(on/
off)
and
its
sens
ibili
ty
can
be c
hang
ed b
y a
para
met
er.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
->
dow
nloa
d im
prov
ed S
W if
ava
ilabl
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
4013180a
5 SPN FMI Fault Codes
65Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.50
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5231
00 -
23
= S
afet
y M
onito
r - W
heel
Spe
ed
Sig
nals
- r
eser
ved
(23)
Saf
ety
Mon
itor
for W
heel
spee
d C
alcu
latio
n (F
ront
A
xle
Rig
ht)
A m
onito
r fa
ilure
of t
he r
elev
ant w
heel
spe
ed
calc
ulat
ion
is d
etec
ted
if:-
Cou
nter
val
ue is
0 a
nd w
heel
spe
ed v
alue
is n
ot
betw
een
0 m
/s a
nd 1
m/s
. -
Cou
nter
val
ue is
con
stan
t for
mor
e th
an 1
80 m
s an
d w
heel
spe
ed v
alue
is n
ot b
etw
een
0m/s
and
1
m/s
.-
Cou
nter
val
ue is
not
con
stan
t for
mor
e th
an
180
ms
and
not 0
and
whe
el s
peed
val
ue is
not
be
twee
n m
in_W
heel
spe
ed a
nd m
ax_W
heel
sp
eed.
Rem
ark:
The
mon
itor
(on/
off)
and
its
sens
ibili
ty
can
be c
hang
ed b
y a
para
met
er.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
00 -
24
= S
afet
y M
onito
r - W
heel
Spe
ed
Sig
nals
- r
eser
ved
(24)
Saf
ety
Mon
itor
for W
heel
spee
d C
alcu
latio
n (D
rive
Axl
e Le
ft)
A m
onito
r fa
ilure
of t
he r
elev
ant w
heel
spe
ed
calc
ulat
ion
is d
etec
ted
if:-
Cou
nter
val
ue is
0 a
nd w
heel
spe
ed v
alue
is n
ot
betw
een
0 m
/s a
nd 1
m/s
. -
Cou
nter
val
ue is
con
stan
t for
mor
e th
an 1
80 m
s an
d w
heel
spe
ed v
alue
is n
ot b
etw
een
0m/s
and
1
m/s
.-
Cou
nter
val
ue is
not
con
stan
t for
mor
e th
an
180
ms
and
not 0
and
whe
el s
peed
val
ue is
not
be
twee
n m
in_W
heel
spe
ed a
nd m
ax_W
heel
sp
eed.
Rem
ark:
The
mon
itor
(on/
off)
and
its
sens
ibili
ty
can
be c
hang
ed b
y a
para
met
er.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
00 -
25
= S
afet
y M
onito
r - W
heel
Spe
ed
Sig
nals
- r
eser
ved
(25)
Saf
ety
Mon
itor
for W
heel
spee
d C
alcu
latio
n (D
rive
Axl
e R
ight
)
A m
onito
r fa
ilure
of t
he r
elev
ant w
heel
spe
ed
calc
ulat
ion
is d
etec
ted
if:-
Cou
nter
val
ue is
0 a
nd w
heel
spe
ed v
alue
is n
ot
betw
een
0 m
/s a
nd 1
m/s
. -
Cou
nter
val
ue is
con
stan
t for
mor
e th
an 1
80 m
s an
d w
heel
spe
ed v
alue
is n
ot b
etw
een
0m/s
and
1
m/s
.-
Cou
nter
val
ue is
not
con
stan
t for
mor
e th
an
180
ms
and
not 0
and
whe
el s
peed
val
ue is
not
be
twee
n m
in_W
heel
spe
ed a
nd m
ax_W
heel
sp
eed.
Rem
ark:
The
mon
itor
(on/
off)
and
its
sens
ibili
ty
can
be c
hang
ed b
y a
para
met
er.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
00 -
26
= S
afet
y M
onito
r - W
heel
Spe
ed
Sig
nals
- r
eser
ved
(26)
Saf
ety
Mon
itor
for W
heel
spee
d C
alcu
latio
n (I
nter
med
iate
Axl
e Le
ft)
A m
onito
r fa
ilure
of t
he r
elev
ant w
heel
spe
ed
calc
ulat
ion
is d
etec
ted
if:-
Cou
nter
val
ue is
0 a
nd w
heel
spe
ed v
alue
is n
ot
betw
een
0 m
/s a
nd 1
m/s
. -
Cou
nter
val
ue is
con
stan
t for
mor
e th
an 1
80 m
s an
d w
heel
spe
ed v
alue
is n
ot b
etw
een
0m/s
and
1
m/s
.-
Cou
nter
val
ue is
not
con
stan
t for
mor
e th
an
180
ms
and
not 0
and
whe
el s
peed
val
ue is
not
be
twee
n m
in_W
heel
spe
ed a
nd m
ax_W
heel
sp
eed.
Rem
ark:
The
mon
itor
(on/
off)
and
its
sens
ibili
ty
can
be c
hang
ed b
y a
para
met
er.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013181a
5 SPN FMI Fault Codes
66 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.51
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5231
00 -
27
= S
afet
y M
onito
r - W
heel
Spe
ed
Sig
nals
- r
eser
ved
(27)
Saf
ety
Mon
itor
for W
heel
spee
d C
alcu
latio
n (I
nter
med
iate
Axl
e R
ight
)
A m
onito
r fa
ilure
of t
he r
elev
ant w
heel
spe
ed
calc
ulat
ion
is d
etec
ted
if:-
Cou
nter
val
ue is
0 a
nd w
heel
spe
ed v
alue
is n
ot
betw
een
0 m
/s a
nd 1
m/s
. -
Cou
nter
val
ue is
con
stan
t for
mor
e th
an 1
80 m
s an
d w
heel
spe
ed v
alue
is n
ot b
etw
een
0m/s
and
1
m/s
.-
Cou
nter
val
ue is
not
con
stan
t for
mor
e th
an
180
ms
and
not 0
and
whe
el s
peed
val
ue is
not
be
twee
n m
in_W
heel
spe
ed a
nd m
ax_W
heel
sp
eed.
Rem
ark:
The
mon
itor
(on/
off)
and
its
sens
ibili
ty
can
be c
hang
ed b
y a
para
met
er.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
01 -
22
= S
afet
y M
onito
r -
AB
S F
unct
ion
- re
serv
ed (
22)
Saf
ety
Mon
itor
for
AB
S F
unct
ion
(Par
t 1)
The
AB
S M
onito
r sh
all p
reve
nt th
e A
BS
func
tion
from
act
ivat
ing
AB
S c
ontr
ol o
n an
y w
heel
with
out
nece
ssity
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
01 -
23
= S
afet
y M
onito
r -
AB
S F
unct
ion
- re
serv
ed (
23)
Saf
ety
Mon
itor
for
AB
S F
unct
ion
(Par
t 2)
The
AB
S M
onito
r en
sure
s th
at A
BS
func
tion
shal
l not
sw
itch
off A
BS
con
trol
at t
he R
A w
ithou
t sw
itchi
ng o
ff A
BS
con
trol
at t
he F
A.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
02 -
22
= S
afet
y M
onito
r -
ATC
Fun
ctio
n -
rese
rved
(22
)
Saf
ety
Mon
itor
for
ATC
Fun
ctio
nT
his
safe
ty m
onito
r ch
ecks
the
corr
ect f
unct
ion
of
the
auto
mat
ic tr
actio
n co
ntro
l.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
03 -
22
= S
afet
y M
onito
r -
RS
C F
unct
ion
- re
serv
ed (
22)
Saf
ety
Mon
itor
for
RS
C F
unct
ion
Thi
s sa
fety
mon
itor
chec
ks th
e co
rrec
t fun
ctio
n of
th
e ro
ll st
abili
ty c
ontr
ol.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
04 -
22
= S
afet
y M
onito
r - Y
C F
unct
ion
- re
serv
ed (
22)
Saf
ety
Mon
itor
for Y
C
Fun
ctio
nT
his
safe
ty m
onito
r ch
ecks
the
corr
ect f
unct
ion
of
the
yaw
con
trol
.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
05 -
22
= S
afet
y M
onito
r -
AR
B F
unct
ion
- re
serv
ed (
22)
Saf
ety
Mon
itor
for
AR
B F
unct
ion
Thi
s sa
fety
mon
itor
chec
ks th
e co
rrec
t fun
ctio
n of
th
e an
ti-ro
ll br
ake.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
06 -
22
= S
afet
y M
onito
r -
XB
R F
unct
ion
- re
serv
ed (
22)
Saf
ety
Mon
itor
for
XB
R F
unct
ion
Thi
s sa
fety
mon
itor
chec
ks th
e co
rrec
t fun
ctio
n of
th
e ex
tern
al b
rake
req
uest
.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
07 -
22
= S
afet
y M
onito
r -
BM
Fun
ctio
n -
rese
rved
(22
)
Saf
ety
Mon
itor
for
BM
F
unct
ion
Thi
s sa
fety
mon
itor
chec
ks th
e co
rrec
t fun
ctio
n of
th
e br
ake
man
agem
ent.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
08 -
22
= S
afet
y M
onito
r -
CS
C F
unct
ion
- re
serv
ed (
22)
Saf
ety
Mon
itor
for
CS
C F
unct
ion
Thi
s sa
fety
mon
itor
chec
ks th
e co
rrec
t fun
ctio
n of
th
e co
mbi
natio
n st
abili
ty c
ontr
ol.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013182a
5 SPN FMI Fault Codes
67Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.52
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5231
09 -
22
= S
afet
y M
onito
r -
Fric
tion
Bra
ke
Dec
ider
Fun
ctio
n -
rese
rved
(2
2)
Saf
ety
Mon
itor
for
Fric
tion
Bra
ke D
ecid
er
Fun
ctio
n
Thi
s sa
fety
mon
itor
chec
ks th
e co
rrec
t fun
ctio
n of
th
e fr
ictio
n br
ake
deci
der.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
10 -
22
= S
afet
y M
onito
r - V
alve
Com
bi
Fun
ctio
n -
rese
rved
(22
)
Saf
ety
Mon
itor
for
Valv
e C
ombi
Fun
ctio
n (P
art 1
a)
Thi
s sa
fety
mon
itor
chec
ks g
ener
ic s
yste
m
func
tions
(P
art 1
a/F
SR
_02)
. Che
ck m
axim
um
pres
sure
diff
eren
ce (
left/
right
) at
fron
t axl
e (a
t sp
eeds
hig
her
than
20
km/h
).T
SR
_02.
1: M
onito
r de
tect
s fa
ilure
if:
- A
ll th
ree
diff-
valv
es a
re p
ower
ed-o
ff fo
r a
time
T1=
2000
ms
befo
re th
ey a
re p
ower
ed-o
n,
- A
nd th
en a
ll di
ff-va
lves
rem
ain
in p
ower
ed-o
n st
ate
for T
2≤50
0 m
s,
- A
nd p
aral
lelly
dur
ing
time
span
T2,
the
fron
t axl
e le
ft an
d rig
ht in
let v
alve
s ar
e po
wer
ed (
clos
ed)
with
a ti
me
span
(no
t sim
ulta
neou
sly)
for
time
T3>
300
ms.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
10 -
23
= S
afet
y M
onito
r - V
alve
Com
bi
Fun
ctio
n -
rese
rved
(23
)
Saf
ety
Mon
itor
for
Valv
e C
ombi
Fun
ctio
n (P
art 1
b)
Thi
s sa
fety
mon
itor
chec
ks g
ener
ic s
yste
m
func
tions
(P
art 1
b/F
SR
_02)
. Che
ck m
axim
um
pres
sure
diff
eren
ce (
left/
right
) at
fron
t axl
e (a
t sp
eeds
hig
her
than
20
km/h
).T
SR
_02.
2: M
onito
r de
tect
s fa
ilure
if:
- The
fron
t axl
e ou
tlet v
alve
rem
ains
pow
ered
-on
(ope
n) a
nd th
e in
let v
alve
is p
ower
ed-o
ff (o
pen)
fo
r tim
e T
4≥10
0 m
s.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
10 -
24
= S
afet
y M
onito
r - V
alve
Com
bi
Fun
ctio
n -
rese
rved
(24
)
Saf
ety
Mon
itor
for
Valv
e C
ombi
Fun
ctio
n (P
art 2
)
Thi
s sa
fety
mon
itor
chec
ks g
ener
ic s
yste
m
func
tions
(P
art 2
/FS
R_1
6). F
ault
dete
ctio
n if
FA
and
RA
are
bra
ked
sudd
enly
with
out T
CV.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
10 -
25
= S
afet
y M
onito
r - V
alve
Com
bi
Fun
ctio
n -
rese
rved
(25
)
Saf
ety
Mon
itor
for
Valv
e C
ombi
Fun
ctio
n (P
art 3
)
Thi
s sa
fety
mon
itor
chec
ks g
ener
ic s
yste
m
func
tions
(P
art 3
/FS
R_2
1.2)
. Mon
itor
shal
l sw
itch
to s
afe
stat
e if
AB
S v
alve
act
ivat
ion
is d
one
with
out r
eque
st fr
om th
e de
cide
r.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
10 -
26
= S
afet
y M
onito
r - V
alve
Com
bi
Fun
ctio
n -
rese
rved
(26
)
Saf
ety
Mon
itor
for
Valv
e C
ombi
Fun
ctio
n (P
art 4
)
Thi
s sa
fety
mon
itor
chec
ks g
ener
ic s
yste
m
func
tions
(P
art 4
/FS
R_3
5). P
laus
ibili
ty c
heck
of
brak
e va
lve
cont
rol t
o av
oid
sudd
en b
raki
ng (
10
bar/
sec)
of t
ruck
and
trai
ler.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5231
10 -
27
= S
afet
y M
onito
r - V
alve
Com
bi
Fun
ctio
n -
rese
rved
(27
)
Saf
ety
Mon
itor
for
Valv
e C
ombi
Fun
ctio
n (P
art 5
a)
Thi
s sa
fety
mon
itor
chec
ks g
ener
ic s
yste
m
func
tions
(P
art 5
a/F
SR
_43)
. Che
ck m
axim
um
pres
sure
diff
eren
ce le
ft/rig
ht a
t rea
r ax
leT
SR
_43.
1: M
onito
r de
tect
s fa
ilure
if:
- A
ll th
ree
diff-
valv
es a
re p
ower
ed-o
ff fo
r a
time
T1=
2000
ms
befo
re th
ey a
re p
ower
ed-o
n,
- A
nd th
en a
ll di
ff-va
lves
rem
ain
in p
ower
ed-o
n st
ate
for T
2≤50
0 m
s,
- A
nd p
aral
lelly
dur
ing
time
span
T2,
the
rear
ax
le le
ft an
d rig
ht in
let v
alve
s ar
e po
wer
ed w
ith
diffe
rent
vol
tage
s fo
r tim
e T
3>30
0 m
s.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
.
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013183a
5 SPN FMI Fault Codes
68 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.53
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5231
10 -
28
= S
afet
y M
onito
r - V
alve
Com
bi
Fun
ctio
n -
rese
rved
(28
)
Saf
ety
Mon
itor
for
Valv
e C
ombi
Fun
ctio
n (P
art 5
b)
Thi
s sa
fety
mon
itor
chec
ks g
ener
ic s
yste
m
func
tions
(P
art 5
b/F
SR
_43)
. Che
ck m
axim
um
pres
sure
diff
eren
ce le
ft/rig
ht a
t rea
r ax
le.
TS
R_4
3.2:
Mon
itor
dete
cts
failu
re if
: - T
he r
ear
axle
out
let v
alve
rem
ains
pow
ered
-on
(ope
n) a
nd th
e in
let v
alve
is p
ower
ed-o
ff (o
pen)
fo
r tim
e T
4≥10
0 m
s.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
->
dow
nloa
d im
prov
ed S
W if
ava
ilabl
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5231
10 -
29
= S
afet
y M
onito
r - V
alve
Com
bi
Fun
ctio
n -
rese
rved
(29
)
Saf
ety
Mon
itor
for
Valv
e C
ombi
Fun
ctio
n (P
art 6
)
Thi
s sa
fety
mon
itor
chec
ks g
ener
ic s
yste
m
func
tions
(P
art 6
/FS
R_4
7.1)
. Val
ve c
ontr
ol m
onito
r sh
all c
heck
if th
e w
hole
rea
r ax
le is
blo
cked
and
at
leas
t 1 fr
ont w
heel
is n
ot b
lock
ed. I
n th
is c
ase,
th
e m
onito
r sh
all a
lso
switc
h of
f the
AB
S c
ontr
ol
on fr
ont a
xle.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
->
dow
nloa
d im
prov
ed S
W if
ava
ilabl
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5231
10 -
30
= S
afet
y M
onito
r - V
alve
Com
bi
Fun
ctio
n -
rese
rved
(30
)
Saf
ety
Mon
itor
for
Valv
e C
ombi
Fun
ctio
n (P
art 7
)
Thi
s sa
fety
mon
itor
chec
ks g
ener
ic s
yste
m
func
tions
(P
art 7
/FS
R_4
9). M
onito
ring
of s
witc
hing
O
N o
f one
or
mor
e A
BS
-IV
(O
V s
witc
hed
OF
F)
for
a tim
e lo
nger
than
100
sec
onds
. (P
ress
ure
bloc
ked
in w
heel
->
over
heat
ing.
)
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
->
dow
nloa
d im
prov
ed S
W if
ava
ilabl
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5231
10 -
31
= S
afet
y M
onito
r - V
alve
Com
bi
Fun
ctio
n -
cond
ition
exi
sts
Saf
ety
Mon
itor
for
Valv
e C
ombi
Fun
ctio
n (P
art 8
a)
Thi
s sa
fety
mon
itor
chec
ks g
ener
ic s
yste
m
func
tions
(P
art 8
a/F
SR
_139
). M
onito
r de
tect
s fa
ilure
if:
- B
oth
diff-
valv
es a
nd a
ll A
BS
inle
t val
ves
are
pow
ered
-off
for
a tim
e T
1=20
00 m
s,
- A
nd th
en w
ithin
a ti
me
span
of T
2=10
0 m
s,
FA+T
CV
diff
val
ve, R
A d
iff v
alve
and
FA
and
RA
A
BS
inle
t val
ve a
re p
ower
ed-o
n w
hile
AB
S T
CV
va
lve
rem
ains
pow
ered
-off,
-
And
afte
r th
at, f
or ti
me
T3=
500
ms,
the
sam
e st
ate
is m
aint
aine
d.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
->
dow
nloa
d im
prov
ed S
W if
ava
ilabl
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5231
11 -
22
= S
afet
y M
onito
r - V
alve
Com
bi
Fun
ctio
n (C
ontin
uatio
n) -
re
serv
ed (
22)
Saf
ety
Mon
itor
for
Valv
e C
ombi
Fun
ctio
n (P
art 8
b)
Thi
s sa
fety
mon
itor
chec
ks g
ener
ic s
yste
m
func
tions
(P
art 8
b/F
SR
_139
). M
onito
r de
tect
s fa
ilure
if:
- B
oth
diff-
valv
es a
nd a
ll A
BS
inle
t val
ves
are
pow
ered
-off
for
a tim
e T
1=20
00 m
s,
- A
nd th
en w
ithin
a ti
me
span
of T
2=10
0 m
s,
FA+T
CV
diff
val
ve a
nd F
A A
BS
inle
t val
ve a
re
pow
ered
-on,
whi
le A
BS
TC
V v
alve
rem
ains
po
wer
ed-o
ff,
- A
nd a
fter
that
, for
tim
e T
3=50
0 m
s, th
e sa
me
stat
e is
mai
ntai
ned.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
->
dow
nloa
d im
prov
ed S
W if
ava
ilabl
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5231
12 -
22
= S
afet
y M
onito
r -
Ref
eren
ce S
peed
-
rese
rved
(22
)
Saf
ety
Mon
itor
for
Whe
el R
efer
ence
S
peed
Thi
s sa
fety
mon
itor
chec
ks th
e co
rrec
t fun
ctio
n of
th
e W
heel
Ref
eren
ce S
peed
.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
->
dow
nloa
d im
prov
ed S
W if
ava
ilabl
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5231
12 -
23
= S
afet
y M
onito
r -
Ref
eren
ce S
peed
-
rese
rved
(23
)
Saf
ety
Mon
itor
for
Vehi
cle
Ref
eren
ce
Spe
ed
Thi
s sa
fety
mon
itor
chec
ks th
e co
rrec
t fun
ctio
n of
th
e W
heel
Ref
eren
ce S
peed
.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
->
dow
nloa
d im
prov
ed S
W if
ava
ilabl
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5231
12 -
24
= S
afet
y M
onito
r -
Ref
eren
ce S
peed
-
rese
rved
(24
)
Saf
ety
Mon
itor
for
AB
S R
efer
ence
S
peed
Thi
s sa
fety
mon
itor
chec
ks th
e co
rrec
t fun
ctio
n of
th
e W
heel
Ref
eren
ce S
peed
.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
->
dow
nloa
d im
prov
ed S
W if
ava
ilabl
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
4013184a
5 SPN FMI Fault Codes
69Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.54D
TC S
PN
FM
IFa
ilure
Det
ectio
n N
ame
Failu
re D
etec
tion
Des
crip
tion
War
ning
and
Sys
tem
R
eact
ion
Rep
air
5231
14 -
22
= S
afet
y M
onito
r -
Ste
erin
g A
ngle
S
enso
r -
rese
rved
(22
)
Saf
ety
Mon
itor
for
Ste
erin
g A
ngle
Thi
s sa
fety
mon
itor
chec
ks th
e co
rrec
t fun
ctio
n of
th
e S
teer
ing
Ang
le S
enso
r.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
->
dow
nloa
d im
prov
ed S
W if
ava
ilabl
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5231
15 -
22
= S
afet
y M
onito
r - Y
aw R
ate
- re
serv
ed (
22)
Saf
ety
Mon
itor
for Y
aw
Rat
eT
his
safe
ty m
onito
r ch
ecks
the
corr
ect f
unct
ion
of
the
Yaw
Rat
e.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
->
dow
nloa
d im
prov
ed S
W if
ava
ilabl
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5231
16 -
22
= S
afet
y M
onito
r -
Late
ral
Acc
eler
atio
n -
rese
rved
(22
)
Saf
ety
Mon
itor
for
Late
ral A
ccel
erat
ion
Thi
s sa
fety
mon
itor
chec
ks th
e co
rrec
t fun
ctio
n of
th
e la
tera
l acc
eler
atio
n.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
->
dow
nloa
d im
prov
ed S
W if
ava
ilabl
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5231
17 -
22
= S
afet
y M
onito
r - T
arge
t Yaw
Rat
e -
rese
rved
(22
)
Saf
ety
Mon
itor
for
Targ
et Y
aw R
ate
Thi
s sa
fety
mon
itor
chec
ks th
e co
rrec
t fun
ctio
n of
th
e ta
rget
yaw
rate
.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
->
dow
nloa
d im
prov
ed S
W if
ava
ilabl
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5231
18 -
22
= S
afet
y M
onito
r -
ES
C S
enso
r E
xter
nal -
res
erve
d (2
2)
Saf
ety
Mon
itor
for
ES
C S
enso
r E
xter
nal
(Lat
eral
Acc
eler
atio
n)
Thi
s sa
fety
mon
itor
chec
ks th
e co
rrec
t fun
ctio
n of
th
e E
SC
Sen
sor
Ext
erna
l (La
tera
l Acc
eler
atio
n).
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
->
dow
nloa
d im
prov
ed S
W if
ava
ilabl
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5231
18 -
23
= S
afet
y M
onito
r -
ES
C S
enso
r E
xter
nal -
res
erve
d (2
3)
Saf
ety
Mon
itor
for
ES
C S
enso
r E
xter
nal
(Yaw
Rat
e)
Thi
s sa
fety
mon
itor
chec
ks th
e co
rrec
t fun
ctio
n of
th
e E
SC
Sen
sor
Ext
erna
l (Ya
w R
ate)
.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• S
afet
y M
onito
r ha
s de
tect
ed a
SW
-pro
blem
->
dow
nloa
d im
prov
ed S
W if
ava
ilabl
e.•
Con
tact
the
Mer
itor
OnT
rac™
Cus
tom
er C
all C
ente
r at
86
6-O
nTra
c1 (
668-
7221
).
5231
19 -
22
= S
afet
y M
onito
r -
Req
uest
Ble
nder
-
rese
rved
(22
)
Saf
ety
Mon
itor
for
Req
uest
Ble
nder
F
unct
ion
Thi
s sa
fety
mon
itor
chec
ks th
e co
rrec
t fun
ctio
n of
th
e re
ques
t ble
nder
.Ye
llow
Driv
er W
arni
ng,
AB
S c
ompl
etel
y sw
itche
d of
f
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
0 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 1
) -
data
val
id, b
ut
abov
e no
rmal
ope
ratin
g ra
nge
(mos
t sev
ere
leve
l)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘A
ccel
erat
or P
edal
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
1 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 1
) -
data
val
id, b
ut
belo
w n
orm
al o
pera
ting
rang
e (m
ost s
ever
e le
vel)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘A
ntib
lock
ing
Sys
tem
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
2 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 1
) -
data
err
atic
, in
term
itten
t or
inco
rrec
t
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘A
utom
atic
Tra
ctio
n C
ontr
ol’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
3 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 1
) -
volta
ge a
bove
no
rmal
or
shor
ted
high
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘Axl
e C
onfig
urat
ion’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013185a
5 SPN FMI Fault Codes
70 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.55
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5242
70 -
4 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 1
) -
volta
ge b
elow
no
rmal
or
shor
ted
low
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘B
rake
Con
trol
A
ssig
nmen
t AB
S’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
5 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 1
) -
curr
ent b
elow
no
rmal
or
open
circ
uit
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘B
rake
Ped
al’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
6 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 1
) -
curr
ent a
bove
no
rmal
or
grou
nded
circ
uit
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘D
eriv
ed P
aram
eter
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
7 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 1
) - m
echa
nica
l sys
tem
no
t res
pond
ing
corr
ectly
or
out o
f adj
ustm
ent
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘D
iffer
entia
l Slip
C
ontr
ol’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
8 =
EE
PR
OM
-
NV
Mem
Che
cksu
m
failu
re (
Par
t 1)
- ab
norm
al
freq
uenc
y, p
ulse
wid
th o
r pe
riod
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘D
rag
Torq
ue C
ontr
ol’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
9 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 1
) -
abno
rmal
upd
ate
rate
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘D
rive
Trai
n’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
10
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- ab
norm
al ra
te o
f ch
ange
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘E
lect
roni
c B
rake
Li
mita
tion’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
11
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- fa
ilure
mod
e no
t id
entifi
able
/roo
t cau
se n
ot
know
n
Che
cksu
m E
rror
of
Par
amet
er
grou
p ‘In
terfa
ce
Con
figur
atio
n’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013186a
5 SPN FMI Fault Codes
71Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.56
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5242
70 -
12
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- ba
d in
telli
gent
de
vice
or
com
pone
nt
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘M
ass
Cal
cula
tion’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
13
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- ou
t of c
alib
ratio
n
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘S
yste
m C
onfig
urat
ion’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
14
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- sp
ecia
l ins
truc
tions
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘Tire
S
ize
Com
pens
atio
n’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
15
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- da
ta v
alid
, but
ab
ove
norm
al o
pera
ting
rang
e (le
ast s
ever
e le
vel)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘Tire
S
ize
Com
pens
atio
n/
Sto
rage
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
16
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- da
ta v
alid
, but
ab
ove
norm
al o
pera
ting
rang
e (m
oder
atel
y se
vere
le
vel)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘T
otal
Veh
icle
C
onfig
urat
ion’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
17
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- da
ta v
alid
, but
be
low
nor
mal
ope
ratin
g ra
nge
(leas
t sev
ere
leve
l)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘Yaw
R
ate
Con
trol
Sto
rage
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
18
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- da
ta v
alid
, but
be
low
nor
mal
ope
ratin
g ra
nge
(mod
erat
ely
seve
re
leve
l)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘D
ecel
erat
ion
Con
trol
A
BS
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
19
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- re
ceiv
ed n
etw
ork
data
in e
rror
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘Hill
S
tart
Aid
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
20
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- da
ta d
rifte
d hi
gh
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘P
latfo
rm’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013187a
5 SPN FMI Fault Codes
72 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.57
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5242
70 -
21
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- da
ta d
rifte
d lo
w
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘R
SC
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
22
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- re
serv
ed (
22)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘Yaw
C
ontr
ol’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
23
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- re
serv
ed (
23)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘S
teer
ing
Ang
le’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
24
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- re
serv
ed (
24)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘S
teer
ing
Whe
el A
ngle
S
tora
ge’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
25
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- re
serv
ed (
25)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘V
ehic
le A
ccel
erat
ion
Sto
rage
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
26
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- re
serv
ed (
26)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘Hill
S
tart
Aid
Sto
rage
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
27
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- re
serv
ed (
27)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘T
raile
r D
etec
tion’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
28
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- re
serv
ed (
28)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘S
teer
ing
Ang
le
Sto
rage
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013188a
5 SPN FMI Fault Codes
73Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.58
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5242
70 -
29
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- re
serv
ed (
29)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘E
xter
nal B
rake
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
30
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- re
serv
ed (
30)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘E
xter
nal B
rake
S
tora
ge’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
70 -
31
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 1)
- co
nditi
on e
xist
s
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘S
witc
h’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
0 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 2
) -
data
val
id, b
ut
abov
e no
rmal
ope
ratin
g ra
nge
(mos
t sev
ere
leve
l)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘B
rake
Pre
ssur
e’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
1 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 2
) -
data
val
id, b
ut
belo
w n
orm
al o
pera
ting
rang
e (m
ost s
ever
e le
vel)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘C
ente
r of
Gra
vity
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
2 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 2
) -
data
err
atic
, in
term
itten
t or
inco
rrec
t
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘F
unct
ion
Sys
tem
C
onfig
urat
ion’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
3 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 2
) -
volta
ge a
bove
no
rmal
or
shor
ted
high
Che
cksu
m E
rror
of
Par
amet
er
grou
p ‘H
ardw
are
Con
figur
atio
n’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
4 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 2
) -
volta
ge b
elow
no
rmal
or
shor
ted
low
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘S
peed
omet
er
Adj
ustm
ent’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013189a
5 SPN FMI Fault Codes
74 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.59
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5242
71 -
5 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 2
) -
curr
ent b
elow
no
rmal
or
open
circ
uit
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘S
peed
omet
er
Adj
ustm
ent S
tora
ge’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
6 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 2
) -
curr
ent a
bove
no
rmal
or
grou
nded
circ
uit
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘S
uppl
y Vo
ltage
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
7 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 2
) - m
echa
nica
l sys
tem
no
t res
pond
ing
corr
ectly
or
out o
f adj
ustm
ent
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘V
ehic
le C
AN
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
8 =
EE
PR
OM
-
NV
Mem
Che
cksu
m
failu
re (
Par
t 2)
- ab
norm
al
freq
uenc
y, p
ulse
wid
th o
r pe
riod
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘A
uxili
ary
Par
kbra
ke’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
9 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 2
) -
abno
rmal
upd
ate
rate
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘E
mer
genc
y S
top
Sig
nal’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
10
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- ab
norm
al ra
te o
f ch
ange
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘G
loba
l Var
iant
C
odin
g’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
11
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- fa
ilure
mod
e no
t id
entifi
able
/roo
t cau
se n
ot
know
n
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘M
BT
Spe
cific
P
aram
eter
s’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
12
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- ba
d in
telli
gent
de
vice
or
com
pone
nt
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘P
latfo
rm S
tora
ge’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013190a
5 SPN FMI Fault Codes
75Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.60
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5242
71 -
13
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- ou
t of c
alib
ratio
n
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘M
odel
Dia
gnos
tics
Sto
rage
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
14
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- sp
ecia
l ins
truc
tions
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘A
uxili
ary
Axl
es’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
15
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- da
ta v
alid
, but
ab
ove
norm
al o
pera
ting
rang
e (le
ast s
ever
e le
vel)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘C
ombi
natio
n S
tabi
lity
Con
trol
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
16
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- da
ta v
alid
, but
ab
ove
norm
al o
pera
ting
rang
e (m
oder
atel
y se
vere
le
vel)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘E
apu’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
17
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- da
ta v
alid
, but
be
low
nor
mal
ope
ratin
g ra
nge
(leas
t sev
ere
leve
l)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘E
apu
Sto
rage
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
18
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- da
ta v
alid
, but
be
low
nor
mal
ope
ratin
g ra
nge
(mod
erat
ely
seve
re
leve
l)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘Esc
S
enso
r’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
19
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- re
ceiv
ed n
etw
ork
data
in e
rror
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘Esc
S
enso
r S
tora
ge’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
20
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- da
ta d
rifte
d hi
gh
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘G
vcT
ime
Sta
mp
Sto
rage
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013191a
5 SPN FMI Fault Codes
76 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.61
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5242
71 -
21
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- da
ta d
rifte
d lo
w
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘O
pen
Loop
Pre
ssur
e C
ontr
ol’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
22
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- re
serv
ed (
22)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘S
afet
y M
onito
rs’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
23
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- re
serv
ed (
23)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘Yaw
R
ate’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
24
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- re
serv
ed (
24)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘R
SC
Sto
rage
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
25
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- re
serv
ed (
25)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘L
oad
Cha
nge
Det
ectio
n S
tora
ge’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
26
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- re
serv
ed (
26)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘B
rake
Cyl
inde
r P
ress
ure
Est
imat
or
Sto
rage
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
27
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- re
serv
ed (
27)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘S
teer
ing
Whe
el
Ang
le’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
28
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- re
serv
ed (
28)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘Axl
e M
odul
ator
Inte
rface
’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013192a
5 SPN FMI Fault Codes
77Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.62
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5242
71 -
29
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- re
serv
ed (
29)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘B
rake
Con
trol
A
ssig
nmen
t’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
30
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- re
serv
ed (
30)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘B
rake
Con
trol
A
ssig
nmen
t EB
S’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
71 -
31
= E
EP
RO
M -
N
VM
em C
heck
sum
failu
re
(Par
t 2)
- co
nditi
on e
xist
s
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘C
lose
d Lo
op
Pre
ssur
e C
ontr
ol’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
72 -
0 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 3
) -
data
val
id, b
ut
abov
e no
rmal
ope
ratin
g ra
nge
(mos
t sev
ere
leve
l)
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘E
CU
Sup
ply
Volta
ge’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
72 -
1 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 3
) -
data
val
id, b
ut
belo
w n
orm
al o
pera
ting
rang
e (m
ost s
ever
e le
vel)
Che
cksu
m E
rror
of
Par
amet
er
grou
p ‘H
ardw
are
Con
figur
atio
n A
xle
Mod
ulat
or’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
72 -
2 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 3
) -
data
err
atic
, in
term
itten
t or
inco
rrec
t
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘P
aram
eter
Pla
usib
ility
S
tora
ge’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
72 -
3 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 3
) -
volta
ge a
bove
no
rmal
or
shor
ted
high
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘P
ress
ure
Incr
ease
A
ssis
t’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
72 -
4 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 3
) -
volta
ge b
elow
no
rmal
or
shor
ted
low
Che
cksu
m E
rror
of
Par
amet
er
grou
p ‘S
yste
m B
us
Con
figur
atio
n’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
72 -
5 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 3
) -
curr
ent b
elow
no
rmal
or
open
circ
uit
Che
cksu
m E
rror
of
Par
amet
er g
roup
‘B
rake
Ped
al S
tora
ge’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013193a
5 SPN FMI Fault Codes
78 Meritor WABCO Maintenance Manual MM-1719 (Issued 06-17)
Figure 5.63
DTC
SP
N F
MI
Failu
re D
etec
tion
Nam
eFa
ilure
Det
ectio
n D
escr
iptio
nW
arni
ng a
nd S
yste
m
Rea
ctio
nR
epai
r
5242
72 -
6 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 3
) -
curr
ent a
bove
no
rmal
or
grou
nded
circ
uit
Che
cksu
m E
rror
of
Par
amet
er
grou
p ‘M
odul
ator
Id
entifi
catio
n’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
5242
72 -
7 =
EE
PR
OM
-
NV
Mem
Che
cksu
m fa
ilure
(P
art 3
) - m
echa
nica
l sys
tem
no
t res
pond
ing
corr
ectly
or
out o
f adj
ustm
ent
Che
cksu
m E
rror
of
Par
amet
er
grou
p ‘P
aram
eter
P
laus
ibili
ty’
A fa
ulty
che
cksu
m w
as d
etec
ted
in th
e re
leva
nt
para
met
er g
roup
in th
e no
n-vo
latil
e m
emor
y (E
EP
RO
M).
Rem
ark:
Thi
s ch
ecks
um is
inte
rnal
ly c
alcu
late
d by
th
e so
ftwar
e af
ter
the
para
met
ers
wer
e tra
nsm
itted
to
the
EE
PR
OM
.
Yello
w D
river
War
ning
, A
BS
com
plet
ely
switc
hed
off
• C
onta
ct th
e M
erito
r O
nTra
c™ C
usto
mer
Cal
l Cen
ter
at
866-
OnT
rac1
(66
8-72
21).
4013194a
Notes
Meritor WABCO Vehicle Control Systems2135 West Maple Road Printed in USATroy, MI 48084-7121866-OnTrac1 (668-7221) Copyright 2017 Issued 06-17meritorwabco.com Meritor, Inc. Maintenance Manual MM-1719 (16579)