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PressureSymbol

T

TemperatureSymbol

LevelSymbol

FlowSymbol

Circuit BreakerSymbol

Harness and Wire Symbols

Symbols

Symbols and Definitions

Harness And Wire Electrical Schematic Symbols

Fuse: A component in an electrical circuit that will open the circuit if too much current flows through it.

Switch (Normally Open): A switch that will close at a specified point (temp, press, etc.). The circle indicates that the component has screw terminals and a wire can be disconnected from it.

Switch (Normally Closed): A switch that will open at a specified point (temp, press, etc.).No circle indicates that the wire cannot be disconnected from the component.

Ground (Wired): This indicates that the component is connected to a grounded wire. Thegrounded wire is fastened to the machine.

Ground (Case): This indicates that the component does not have a wire connected to ground. It is grounded by being fastened to the machine.

Reed Switch: A switch whose contacts are controlled by a magnet. A magnet closes the contacts of a normally open reed switch; it opens the contacts of a normally closed reed switch.

Sender: A component that is used with a temperature or pressure gauge. The sender measures the temperature or pressure. Its resistance changes to give an indication to the gauge of the temperature or pressure.T

Relay (Magnetic Switch): A relay is an electrical component that is activated by electricity. It has a coil that makes an electromagnet when current flows through it. The electromagnet can open or close the switch part of the relay.

Magnetic Latch Solenoid: A magnetic latch solenoid is an electrical component that is activated by electricity and held latched by a permanent magnet. It has two coils (latch and unlatch)that make electromagnet when current flows through them. It also has an internal switch that places the latch coil circuit open at the time the coil latches.

Solenoid: A solenoid is an electrical component that is activated by electricity. It has a coil that makes an electromagnet when current flows through it. The electromagnet can open or close a valve or move a piece of metal that can do work.

12

AG-C4111-7898

L-C123E-5179

9X-1123 Component Part Number

Pin or Socket Number

Part Number: for Connector ReceptaclePart Number: for Connector Plug

Harness Identification Letter(s):(A, B, C, ..., AA, AB, AC, ...)

Plug

325-AG135 PK-14

Wire ColorWire Gauge

Receptacle

1

1

2

2Sure-Seal connector: Typical representationof a Sure-Seal connector. The plug and receptacle contain both pins and sockets.

Deutsch connector: Typical representationof a Deutsch connector. The plug contains all sockets and the receptacle contains all pins.

Fuse (5 Amps)

5A

Harness identification code:This example indicates wire group 325,

wire 135 in harness "AG".

L-C123E-5179

Wire, Cable, or Harness Assembly Identification: Includes Harness Identification Letters and Harness Connector Serialization Codes (see sample).

Harness Connector Serialization Code: The "C" stands for "Connector" and the number indicates which connector in the harness (C1, C2, C3, ...).

2011 CaterpillarAll Rights Reserved

Printed in U.S.A.

UENR2137-01August 2011

771D Quarry Truck

Electrical System771D:BCA1-UP6JR1-UP6YS1-UP

777D:AGC1-UP3PR1-UPFKR1-UP2YW1-UPAGY1-UP

CAT Detect Object Detection777D Off-Highway Truck

Event Code Condition

E875 Voltage Below Normal

E786 Voltage Above Normal

E1139 Radar Blockage Detected












Event CodesObject Detection System

Related Electrical Service ManualsForm NumberTitle

Object Detection System: UENR1274

CID Component0247 SAE J1939 Data Link0248 CAT Data Link2348 SAE J1939 Data Link3313 Short Range Object Detection Sensor #1 (Front Left)3314 Short Range Object Detection Sensor #2 (Front Right)3315 Short Range Object Detection Sensor #3 (Rear Left)3316 Short Range Object Detection Sensor #4 (Rear Right)3317 Medium Object Detection Sensor #1 (Front Left C1)3318 Medium Object Detection Sensor #2 (Front Right C1)3319 Medium Object Detection Sensor #3 (Left Side Top C1)3320 Medium Object Detection Sensor #4 (Left Side Bottom C1)3321 Medium Object Detection Sensro #5 (Rear Left C2)3322 Medium Object Detection Sensor #6 (Rear Right C2)3323 Medium Object Detection Sensor #7 (Right Side Top C2)3324 Medium Object Detection Sensor #8 (Right Side Bottom C2)3325 Short Range Object Detection Sensor #1 Power Supply (Front Left C1)3326 Short Range Object Detection Sensor #2 Power Supply (Front Right C1) 3327 Short Range Object detection Sensor #3 Power Supply (Rear Left C2)3328 Short Range Object Detection Sensor #4 Power Supply (Rear Right C2)3329 Meduim Range Object Detection Sensor #1 Power Supply (Front Left C1)3330 Meduim range Object Detection Sensor #2 Power Supply (Front Right C1)3331 Medium Range Object Detection Sensor #3 Power Supply (Left Side Top C1)3332 Medium Range Object Detection Sensor #4 Power Supply (Left Side Bottom C1)3333 Medium Range Object Detection Sensor #5 Power Supply (Rear Left C2)3334 Medium Range Object Detection Sensor #6 Power Supply (Right Rear C2)3335 Medium Range Object Detection Sensor #7 Power Supply (Right Side Top)3336 Medium Range Object Detection Sensor #8 Power Supply (Right Side Bottom)

The CID is a diagnostic code that indicates which circuit is faulty. The MID is a diagnostic code that indicates which electronic control module

diagnosed the fault.

Component Identifiers (CID)Module Identifier (MID)

Object Detection System(MID No. 134)

Failure Mode Identifiers (FMI)FMI No. Failure Description

0 Data valid but above normal operational range.1 Data valid but below normal operational range.2 Data erratic, intermittent, or incorrect.3 Voltage above normal or shorted high.4 Voltage below normal or shorted low.5 Current below normal or open circuit.6 Current above normal or grounded circuit.7 Mechanical system not responding properly.8 Abnormal frequency, pulse width, or period.9 Abnormal update.10 Abnormal rate of change.11 Failure mode not identifiable.12 Bad device or component.13 Out of calibration.14 Parameter failures.15 Parameter failures.16 Parameter not available.17 Module not responding.18 Sensor supply fault.19 Condition not met.20 Parameter failures.

The FMI is a diagnostic code that indicates what type of failure has occurred.

Part No. Resistance (Ohms)174-3016 Resistor: Can Data Link 120 10%

Resistor, Sender and Solenoid SpecificationsComponent Description

At room temperature unless otherwise noted.

Connector Number Schematic LocationCONN 1 D-7CONN 2 B-5CONN 3 C-5CONN 4 D-5CONN 5 D-5CONN 6 E-5CONN 7 D-5

Connector Location

The connectors shown in this chart are for harness to harness connectors. Connectors that join a harness to a component are generally located at or near the component. See the Component Location Chart.

Component Schematic LocationBreaker - Object Detection D-5Camera - Front B-8Camera - Left B-8Camera - Rear A-8Camera - Right A-9Converter - 24V/12V D-3Display B-3Fuse - 15A D-4Ground - Cab D-5Lamp - Camera (Left) E-1Lamp - Camera (Right) B-1Radar - Long Range (Front) C-1Radar - Long Range Side (Left) E-1Radar - Long Range Side (Rear) C-9Radar - Long Range Side (Right) C-1Relay - Lamp C-3Relay - Main Power D-5Resistor - Terminating CAN 1A C-1Resistor - Terminating CAN 1B C-9Resistor - Terminating CAN 2B #1 E-1Resistor - Terminating CAN 2B #2 B-1

Component Location

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Components are shown installed on a fully operable machine with the key and engine off, transmission shifterin neutral and with parking brake set.Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.

SCHEMATIC PART NUMBER: 361-4243, CHANGE: 01, VERSION: -

THIS SCHEMATIC IS FOR THE 771D QUARRY TRUCK AND 777D OFF-HIGHWAY TRUCKCAT DETECT OBJECT DETECTION ELECTRICAL SYSTEMMEDIA NUMBER: UENR2137-01

A

B

C

D

E

123456789

A

B

C

D

E

123456789

ABBREVRDWHORYLPKBKGYPUBRGNBU

COLORRED

WHITEORANGEYELLOW

PINKBLACKGRAY

PURPLEBROWNGREENBLUE

SYMBOL DESCRIPTION

BLADE, SPADE, RING OR SCREWTERMINAL

CIRCUIT CONNECTED

CIRCUIT NOT CONNECTED

ELECTRICAL CONNECTION TOMACHINE STRUCTURE

INTERNAL ELECTRICAL CONNECTIONTO SURFACE OF COMPONENT

CONNECTOR

ATCH WIRE, CABLE, COMPONENT

SPLICE

CIRCUIT GROUPING DESIGNATIONH#

WIRE GROUP COLOR DESCRIPTIONSGROUND CIRCUITWIRES THAT HAVE SYSTEM VOLTAGE WHEN THE KEY SWITCH IS OFFWIRES THAT HAVE SYSTEM VOLTAGE WHEN THE KEY SWITCH IS ONVOLTAGE CONVERTER OUTPUT CIRCUITCAT DATA LINKCAN 1 DATA LINKCAN 2 DATA LINK

OTHER COLOR DESCRIPTIONSHIGHWAYS

PART NUMBER DESCRIPTION283-0657 3 METER VIDEO CABLE274-4477 5 METER VIDEO CABLE283-0658 7.5 METER VIDEO CABLE283-0659 9 METER VIDEO CABLE274-4478 11 METER VIDEO CABLE274-4479 16 METER VIDEO CABLE

IDENT PART NO. CHG LOC NOTE DESCRIPTIONF 361-5207 00 E-2 771D/777D FRONTR 361-5208 00 E-8 771D REART 361-5209 00 E-6 771D CHASSISCM 361-5211 00 D-4 771D/777D MAIN CABLT 361-1264 00 F-4 771D/777D LEFT SIDE PLATFORMRJ 361-1267 00 E-5 771D RIGHT SIDE JUMPERRT 361-1266 00 C-2 771D RIGHT SIDE PLATFORMT 363-8847 00 E-6 777D CHASSISR 361-0851 00 E-8 777D REARRT 373-1344 00 C-2 777D RIGHT SIDE PLATFORM

130-CM1 RD-12130-CM1 RD-12130-CM2 RD-14

130-CM2 RD-14

130-CM3 RD-14 130-CM3 RD-14

200-CM5 BK-14

200-CM5 BK-14

200-CM7 BK-14

200-CM7 BK-14

200-CM7 BK-14200-CM4 BK-14

200-CM4 BK-14

C234-R5 BK-18

C234-R5 BK-18C234-R6 BK-18

C234-R6 BK-18

C234-R2 BK-16

C234-R2 BK-16

C569-R1 YL-16

C569-R1 YL-16

K900-R19 YL-18

K900-R19 YL-18K900-R26 YL-18

K900-R26 YL-18

K900-R3 YL-18

K900-R3 YL-18

K990-R27 GN-18

K990-R27 GN-18K990-R34 GN-18

K990-R34 GN-18

K990-R4 GN-18

K990-R4 GN-18

C234-RT1 BK-16

C569-RT2 YL-16

F711-RT12 YL-18

F711-RT12 YL-18F711-RT14 YL-18

F711-RT14 YL-18

F711-RT3 YL-18F712-RT16 GN-18

F712-RT16 GN-18

F712-RT18 GN-18

F712-RT18 GN-18

F712-RT4 GN-18

C234-LT1 BK-16

C234-LT1 BK-16C569-LT2 YL-16

C569-LT2 YL-16F711-LT3 YL-18

F711-LT3 YL-18F711-LT15 YL-18

F711-LT15 YL-18

F712-LT4 GN-18

F712-LT4 GN-18F712-LT18 GN-18

F712-LT18 GN-18

308-CM8 YL-16

308-CM8 YL-16

308-CM8 YL-16

308-CM9 YL-16

308-CM9 YL-16

308-CM9 YL-16

C234-CM6 BK-14C234-CM6 BK-14

893-CM12 GN-16

893-CM12 GN-16

892-CM14 BR-16

892-CM14 BR-16892-CM15 BR-16

892-CM15 BR-16

892-CM10 BR-16

892-CM10 BR-16

893-CM13 GN-16

893-CM13 GN-16

893-CM11 GN-16

893-CM11 GN-16

C569-CM20 YL-14

C569-CM20 YL-14

C569-CM20 YL-14

K900-CM17 YL-18

K900-CM17 YL-18

K990-CM16 GN-18

K990-CM16 GN-18

F711-CM21 GN-18

F711-CM21 GN-18

F712-CM23 GY-18

F712-CM23 GY-18

892-A294 BR-16893-A293 GN-16

C234-T6 BK-14

C234-T6 BK-14

C234-T6 BK-14

C234-T5 BK-16

C234-T5 BK-16

C234-T7 BK-16

C234-T7 BK-16

C234-T8 BK-16

C234-T8 BK-16

C234-T1 BK-16

C234-T1 BK-16

C569-T10 YL-14

C569-T10 YL-14

C569-T10 YL-14C569-T9 YL-16

C569-T9 YL-16

C569-T11 YL-16

C569-T11 YL-16

C569-T12 YL-16

C569-T12 YL-16C569-T2 YL-16

C569-T2 YL-16

F711-T19 YL-18

F711-T19 YL-18

F711-T19 YL-18

F711-T17 YL-18

F711-T17 YL-18

F712-T20 GN-18

F712-T20 GN-18

F712-T20 GN-18

F712-T18 GN-18

F712-T18 GN-18

K900-T3 YL-18K900-T14 YL-18

K900-T14 YL-18

K990-T4 GN-18K990-T16 GN-18

K990-T16 GN-18

C234-F1 BK-16

C234-F1 BK-16

C569-F8 YL-16

C569-F8 YL-16

K900-F15 YL-18K990-F24 GN-18

K990-F24 GN-18

K900-T3 YL-18

K900-T3 YL-18

K990-T4 GN-18

K990-T4 GN-18

109-CM29 RD-12

109-CM29 MUST BE CONNECTED TO THE UNSWITCHED SIDE (109 OR)CONNECT TO THE MAIN EXISTING MAIN POWER RELAY

633-CM31 BU-14

633-CM31 BU-14

633-CM31 BU-14308-CM30 YL-16

308-CM30 YL-16

200-CM34 BK-14

200-CM34 BK-14

200-CM33 BK-16

200-CM33 BK-16

200-CM33 BK-16

C234-CM6 BK-14

633-T24 BU-14

633-T24 BU-14

633-T24 BU-14633-T25 BU-14

633-T25 BU-14

633-T26 BU-14

633-T26 BU-14

200-T21 BK-14

200-T21 BK-14

200-T21 BK-14

200-T22 BK-14

200-T22 BK-14

200-T23 BK-14

200-T23 BK-14

C234-RJ1 BK-16C569-RJ2 YL-16F711-RJ3 YL-16F712-RJ4 GN-18633-RJ5 BU-14200-RJ6 BK-14

200-LT20 BK-14

200-LT20 BK-14

200-LT20 BK-14

633-LT19 BU-14

633-LT19 BU-14

633-LT19 BU-14

633-RT19 BU-14

633-RT19 BU-14200-RT20 BK-14

200-RT20 BK-14

C234-RT1 BK-16C569-RT2 YL-16F711-RT3 YL-18F712-RT4 GN-18633-RT19 BU-14200-RT20 BK-14

CAMERA LAMP

RM636 AND RM579 (771D AND 777D-ALL CONFIGS)

MISC. REF. VIDEO CABLE PART NUMBERS

CONNECT TO A-C52PINS 5 & 6

C569-LT2 YL-16

C234-RT1 BK-16

C569-RT2 YL-16

K900-F15 YL-18

C569-F8 YL-16

K900-T31 YL-18

K900-T31 YL-18

K990-T32 GN-18

K990-T32 GN-18

C569-R1 YL-16

C234-F1 BK-16

C234-LT21 BR-16

C234-LT22 BR-16

C234-LT22 BR-16C234-LT21 BR-16

(155-2273 2 PIN DT) PINS 5 UNPLUG FROM A-C52(PRODUCT LINK)

CONNECT TO CM-C8& 6 AND

F711-LT24 YL-18

F712-LT26 GN-18

F711-LT24 YL-18F712-LT26 GN-18

K900-F2 YL-18K900-F3 YL-18

K990-F4 GN-18K990-F5 GN-18

K900-F2 YL-18

K900-F3 YL-18K990-F5 GN-18

K990-F4 GN-18

K990-CM16 GN-18K900-CM17 YL-18

F711-T40 YL-18

F712-T42 GN-18

F712-T42 GN-18

F711-T40 YL-18F712-T42 GN-18

308-CM40 YL-16

308-CM40 YL-16

308-FUSE2 YL-12

308-FUSE1 YL-12

695-CM25 OR-16

695-CM25 OR-16

251-8248

251-8248

F712-CM23 GY-18F711-CM21 GN-18

CAN 1 -+12V

MPIO 0

LR REAR RADAR365-1271

CAN 1 +-BATTERY

VIDEO SIGVIDEO GND+ 12 VDCFEED GND

REAR CAMERA336-6684

CAN 1 +

+12V MEMORY OUT

CAN 1 -

KEYSWITCH INPUT

DISPLAY355-9048

BATTERY -

POWER

CAN 2 -CAN 2 +

CDL +CDL -

USB

CH 1 VIDEO SIGCH 2 VIDEO SIG

VIDEO

CH 3 VIDEO SIGCH 4 VIDEO SIG

CH 1 VIDEO RTNCH 2 VIDEO RTNCH 3 VIDEO RTNCH 4 VIDEO RTNRTN CAMERA+V CAMERA

CAN 2 -+12V

LR LEFT SIDE RADAR365-1271

CAN 2 +-BATTERY

MPIO 1MPIO 0

CAN 2 -+12V

LR RIGHT SIDE RADAR A365-1271

CAN 2 +-BATTERY

CAN 1 -+12V

LR FRONT RADAR365-1271

CAN 1 +-BATTERY

10A

OBJ DET BKR6T-3644

CABGROUND

12

CM-C11552252

3456789101112

12

CM-C21552253

3456789101112

12

R-C12305010

3456

R-C21330973

ABC

CAN 1 TERM RES B174-3016

12

RT-C12305010

3456

CAN 2 TERM RES B 2174-3016

RT-C41330973

ABC

12

R-C33E3376

34

T-C11552272

12

LT-C32305010

3456

12

F-C32305010

3456

MAIN PWR RELAY241-8368

12

CM-C73E3364

CM-C81552269

123456789101112

VIDEO SIGVIDEO RTN+V CAMERARTN CAMERA




CMPD CAMERA JUMMPER319-6830

LEFT CAMERA

FRONT CAMERA

REAR CAMERA

RIGHT CAMERA

REAR CAMERA CABLE274-4477VIDEO SIGVIDEO RTN+V CAMERARTN CAMERA


FRONT CAMERA336-6684


LEFT CAMERA336-6684


RIGHT CAMERA336-6684


CAB LEFT CAMERA CABLE

261-3223


CAB FRONT CAMERA CABLE

261-3223


CAB REAR CAMERA CABLE

261-3223


CAB RIGHT CAMERA CABLE

261-3223VIDEO SIGVIDEO RTN+V CAMERARTN CAMERA

REF DES


RIGHT CAMERA CABLE 2283-0658

LEFT CABLE BULKHEAD251-4243

FRONT CABLE BULKHEAD251-4243

REAR CABLE BULKHEAD251-4243

RIGHT CABLE BULKHEAD251-4243

12

T-C23E3382

3456

12

RJ-C11552273

3456

12

T-C41552272

34

1234

F-C13E3376

123456

RT-C33E3382

12

RJ-C21552273

3456

12

LT-C41552269

LEFT CAMERA LAMP219-6485

12

RT-C21552269

RIGHT CAMERA LAMP219-6485


RIGHT CAMERA CABLE 3283-0658


REF DES


LEFT CAMERA CABLE 2283-0658

12345678910111213141516171819

T-C52130142

12345678910111213141516171819

CM-C92130143

123456

LT-C22305011

123456

RT-C52305011

+24V SWITCHED IN

+12V SWITCHED OUT

+24V BATTERY IN

GROUND

24V 12V-CONVERTER340-7161

12

CM-C41552273

3456

CAN 2 TERM RES B 1174-3016

LT-C51330973

ABC

CAN 1 TERM RES A174-3016

F-C21330973

ABC

12

T-C33E3382

3456

12

LT-C11552273

3456

12

CM-C163045284

FUSE113-8491

12

T-C61552273

3456

12

T-C71552273

3456

87a87

85

8630

LAMP RELAY3E-5239

15243

CM-C33E5519

FRONT CAMERA CABLE c0283-0658VIDEO SIGVIDEO RTN+V CAMERARTN CAMERA



CONN 1

CONN 2

CONN 3

CONN 4

CONN 5

CONN 6

CONN 7

Download - 777D.pdf

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