61111863 citroen systeme d injection hdi bosch edc 16 c3 pour moteur dv4td en
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INTERNATIONAL CENTER OF FORMATION TRADES
SYSTEM Of INJECTION HDIBOSCH EDC 16 C3
FOR ENGINE DV4TD
CITROEN CARS
S.A. with the capital of 16.000.000 €R.C.S. Paris 642.050.199
Registered office: Building Colisée III – 12, street Fructidor
75835 Paris Cedex 17 France
Tel.: 01.58.79.79.79 – www.citroen.fr
WithCITROEN
INTERNATIONAL CENTER OF FORMATION TRADES
AUTOMOBILE TECHNIQUE
61 street Arago 93585 Saint-Ouen cedex
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SYSTEM Of INJECTION HDI BOSCH EDC 16 C3FOR ENGINE DV4TD
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Index of the document: 01
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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CITROEN
SYNTHETIC CONTENTS OF THE BOOKLET
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3FOR ENGINE DV4TD
The purpose of the present booklet is to define the composition and the functionality of a system of engine control diesel HDI BOSCH of the type EDC 16 C3 for engine DV4TD.
This device is composed of a numerical electronic computer which analyze information coming from various sensors, and consequently order at the convenient period the injectors. It also has charges of it the regulation of the pressure, the piloting of the electromagnetic sluice gate of recycling of exhaust fumes.
In this document will be approached the following
topics: - General information and presentation
of the system,
- Description and operation of the components of the various functions or the functions themselves.
- Descriptions of the phases of operation, -
the Councils of maintenance,
- The electric circuit,
- The diagnosis of the system.
B
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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SYNOPSIS
CHAPTER 1:
I - SYNOPTIC ...............................................................................II - FILTER A CARBURIZING
III - FUEL HEATER (ELECTRIC) (1276)
IV - PUMP HIGH FUEL PRESSURE
V - SPILL VALVE ..........................................................................
VI - TRANSFER PUMP (PRÉ-ALIMENTATION)
VII - FUEL FLOW CONTROL UNIT
VIII - CRAWL Of INJECTION COMMON HIGH PRESSUREFUEL ....................................................................................
IX - INJECTORS DIESEL (1131, 1132, 1133, 1134)
X - CHARACTERISTIC OF THE DIESEL ORDERING OF THE INJECTORS
XI - FUEL COOLER .......................................................................
CHAPTER 3: FUNCTION
I -II -
III -
IV -
CHAPTER 4: FUNCTION: RECYCLING OF GASESOf EXHAUST ...............................................................................................
I - SYNOPTIC ...........................................................................II - VACUUM PUMP ....................................................................
III - ELECTROMAGNETIC SLUICE GATE OF REGULATION OF RECYCLING(EGR) (1253) .......................................................................
IV - WINNOW RECYCLING OF
V - CATALYTIC POT ...................................................................
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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CITROENC
DCITROEN
SYNOPSIS
CHAPTER 5: FUNCTION: INJECTION ......................................................
I - DRIVING CALCULATOR ............................................................II - CALCULATOR Of INJECTION (1320)
III - BATTERY (BB00) ....................................................................
IV - SENSOR REFERENCE ROLLS (1115)
V - WATER TEMPERATURE SENSOR
VI - TEMPERATURE SENSOR CARBURIZING (1221)
VII - SENSOR ENGINE SPEED (1313)
VIII - SENSOR HIGH FUEL PRESSURE (1321) -
IX - CONTACTOR OF BRAKE (2100) - CHARACTERISTIC
X - CONTACTOR Of CLUTCH (7306) - CHARACTERISTIC
XII - CONTACTOR REDUNDANT FOOTBRAKE PEDAL (7308) -
CHAPTER 6:
I -II -
III -
IV -
CHAPTER 7: FUNCTION
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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ECITROEN
SYNOPSISCHAPTER 8: FUNCTION: NEED FOR COOLING FOR AIR-CONDITIONING (BRAC)
PAGE 63
I - SYNOPTIC .................................................................................... PAGE 63
II - LINEAR PRESSURE PICK-UP OF THE FLUIDCOOLING AGENT (8009) ........................................................... PAGE 65
III - ADDITIONAL HEATING ................................................................. PAGE 67CHAPTER 9: MAINTENANCE ......................................................................... PAGE 71
I - RECOMMENDATION CARBURIZING ................................................ PAGE 71
II - SECURITY INSTRUCTIONS ............................................................ PAGE 71
III - EXCHANGES OF PARTS – OPERATIONS TO CARRY OUT ................ PAGE 72
IV - PROCEDURES OF RETURN IN GUARANTEE .................................. PAGE 74CHAPTER 10: DIAGNOSIS ............................................................................. PAGE 75
I - TOOLS .......................................................................................... PAGE 75
II - FUNCTIONS OF THE TOOLS .......................................................... PAGE 76
III - SCREENS OF TOOLS LEXIA/PROXIA ............................................. PAGE 77
IV - MODE DEGRADED ...................................................................... PAGE 86
V - DEFECTS SENSORS ..................................................................... PAGE 88
VI - DEFECT FUNCTIONS ANNEX ........................................................ PAGE 92CHAPTER 11: ELECTRIC DIAGRAM ............................................................. PAGE 95
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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FCITROEN
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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GENERAL INFORMATION: SYSTEM Of DIRECT
INJECTION HDI
Caution: All the values specified in this document are given as an indication. To refer to documentation corresponding to the vehicle
I - PREAMBLE
The development of the new range of engine DV4TD to license to associate a new powerful system of injection it.
This system makes it possible to take account of the requirements in term of depollution the standards EURO 3 and it future normalizes EURO 4, approval of control, economy andreliability.
WITH - POLLUTIONThe combustion of the fuel causes the emission of the following pollutants:
• carbon dioxide (CO2),
• carbon monoxide (CO),
• unburnt hydrocarbons (HC),
• nitrogen oxides (Nox),
• carbon particles.The antipollution regulations become more strict and involve the following evolutions:
• installation of a device of recycling of exhaust fumes (EGR) decreasing the nitrogen oxide rate (Nox),
• reduction of the quantity of suffers in fuel (SO2).Improvement of the fuel with license the installation of catalysts of oxidation on the vehicles Diesel.The installation of a catalyst of oxidation causes the reduction of the following pollutants:
• carbon monoxide (CO),
• unburnt hydrocarbons (HC),
• carbon particles.
Foot-note: EGR: recycling of exhaust fumes
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
1CITROEN Chapter 1
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B - PRINCIPAL ARCHITECTURE OF ENGINE DV4TD
Characteristic:
• 4 cylinders 8 valves with camshaft at the head, pulled by notched belt,
• an intake manifold integrated into covers cylinder head,
• an exhaust manifold placed on the part before engine,
• a catalyst of oxidation fixed directly on the exit of the turbocompressor,
• a water pump pulled by the belt of distribution,
• a duocentric oil pump,
• direct injection overfed by turbocompressor without exchanger,
• a device of recycling of exhaust fumes (EGR),
• an electromagnetic sluice gate of regulation of recycling of exhaust
fumes,
• a system low pressure in “depression”.
C - SYSTEM Of INJECTION BOSCH EDC 16 C3Characteristic of the system of injection Bosch EDC 16 C3:
• new driving calculator 32 bits with “anti-tunning” strategy, storage internal more important, only one bench of injection for the 4 injectors,
• management of the injection carburizing according to the engine torque,
• fuel pressure in the common slope being able to reach 1350 bars,
• petrol station ZP18 integrated into the pump high pressure (system low pressure in depression),
• pump high pressure of the type CP3.2.
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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2CITROEN Chapter 1
D - SECURITY INSTRUCTIONS
Foot-note: The security instructions are detailed in a range appearing in the
mechanical sorter of the vehicle concerned.
Prohibition to smoke in the vicinity immediate of the system high pressure at the time of intervention.
To avoid working near flame or of sparks. Turning
engine:
• not to intervene on the system high pressure containing hydrocarbon,
• to always remain out of reach possible fuel jet which can cause serious wounds,
• not to approach the hand close to an escape on the system high pressure containing hydrocarbon,
• after the shutdown, to wait 30 seconds before any intervention.
Foot-note: The latency is necessary to the return to the atmospheric pressure of the system high pressure containing hydrocarbon.
CITROEN 3Chapter 1
REQUIREMENT: Taking into account the very high pressures reigning in the system high pressure containing hydrocarbon (1350 bars), to respect the instructions below.
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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4CITROEN Chapter 1
FUNCTION: FOOD CONTAINING
HYDROCARBON
CITROEN 5Chapter 2
Caption:With - Circuit return containing hydrocarbon tankB - System low pressure carburizing (depression)
C - System high pressure carburizing
Nomenclature:
NUMBER OF PART IN
LOCATE DESIGNATION DIAGRAMSELECTRIC
1 to 4 Injectors diesel (electrohydraulic) 1131 - 1132 - 1133 - 1134
5 Temperature sensor containing hydrocarbon 1221
6 Pump fuel starting manual
7 Fuel cooler
8 Fuel tank
9 Fuel heater (electric) 1276
10 Screw of water purging
11 Filter fuel + water decanter in fuel
12 Pump high fuel pressure (CP3.2)
13 Crawl of injection common high pressurefuel
14 Sensor high fuel pressure 1321
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CITROEN 6Chapter 2
II - FILTER A CONTAINING HYDROCARBON
WITH - ROLERole of the fuel filter
• filtering of the fuel,• decantation of water,
• reheating of the fuel.
Fuel heater (23) (electric). Screw of water purging (22).has - Entry carburizing (retainable connection)B - Exit carburizing (towards pump high fuel pressure) (retainable
connection)Filter fuel (11):• periodicity of replacement every 60000 km,• purge every 20000 km.
Foot-note: The fuel filter must be replaced in its entirety.The filter element can equip the following systems of injection:
• system of injection in depression: SIEMENS SID 802• system of injection in depression: BOSCH EDC 16 C3
Foot-note: Bowl of filtration equipped with a detector of presence of water in the fuel (4050) (country of great export).
Translucent pipe enters the filter to fuel and the pump high fuel pressure:• presence of microbubbles: normal operation,• presence of large bubbles: abnormal operation.
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7CITROENChapter 2
III - FUEL HEATER (ELECTRIC) (1276)
WITH - ROLEThe fuel heater brings the fuel to its temperature of use.
• - DESCRIPTIONThe fuel heater heats the fuel coming from the fuel tank.The fuel heater (23) is composed of resistances (integrated into the fuel filter).The fuel circulates around resistance.This course allows an optimal distribution of heat. The temperature control is ensured by thermostat.
C - ESTABLISHMENTEstablishment: integrated into the fuel filter.
IV - PUMP HIGH FUEL PRESSURE
WITH - ROLE OF THE PUMP HIGH FUEL PRESSURE
• To provide the high fuel pressure.• To supply the injectors diesel through the grout pipe system
common high pressure.• The pump high fuel pressure is pulled by the belt of distribution.
Foot-note: The pump high fuel pressure is not a pump saddle jib crane and does not require a chock.The part high pressure of the pump is cast solid and includes/understands three elements with 120°
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8CITROEN Chapter 2
Nomenclature:
LOCATE DESIGNATION
NUMBER OF PART INDIAGRAMSELECTRIC
6 Pump fuel starting manual
8 Fuel tank
15 Return carburizing injecting diesel towardscontaining hydrocarbon tank
16 Jet of discharge
17 Spill valve
18 Jet of flow
19 Transfer pump
20 Fuel flow control unit 1277 or 1208
21 Limiting device of pressure (integrated into the slopeof injection common high pressurefuel)24 Arrival of the fuel (low pressure)
25 Return carburizing towards containing hydrocarbon tank26 Exit carburizing high pressure
Characteristics:• the jet of discharge allows the fast discharge of the grout pipe
system common high fuel pressure at the time of fast “lifting of foot”,• the jet of flow limits the fuel arrival on the feed pump in the high
modes,• circuit with fuel in depression: aspiration by transfer pump
integrated into the pump high fuel pressure.
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CITROEN 9Chapter 2
C - PHASE OF OPERATIONThe driving calculator controls the fuel flow control unit in closed loop, via the sensor high fuel pressure.The driving calculator controls the volumetric governor by sending a flexible intensity of form RC0 (Cyclic Report/ratio of Opening).The driving calculator uses the fuel flow control unit to manage the fuel pressure in the grout pipe system common high fuel pressure.
If signal RCO is small, the fuel flow control unit lets pass a great quantity of fuel towards the pump high fuel pressure.
If signal RCO is large the fuel flow control unit a small quantity of fuel towards the pump high fuel pressure lets pass.
Foot-note: The fuel flow control unit is open when it is not ordered by the driving calculator.
V - SPILL VALVE
WITH - ROLEThe spill valve (17) allows:
• the degasification of the pump high fuel pressure,
• lubrication interns pump high fuel pressure,
• regulation of the pressure at the entry of the volumetric governor.
Caution: No intervention is authorized on the spill valve.
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10CITROEN Chapter 2
VI - TRANSFER PUMP (PRÉ-ALIMENTATION)
WITH - ROLERole of the transfer pump:
• ensure the pumping of the fuel in the containing hydrocarbon tank,
• supply the pump high fuel pressure,• allows the lubrication and the cooling of the pump high fuel
pressure.
B - DESCRIPTIONThe transfer pump (pre-food) is a gears positive-displacement pump.The depression lies between 0,5 and 1 bar when the fuel returns in the transfer pump.The fuel pressure at exit of transfer pump towards the pump high fuel pressure varies according to the engine speed (between 4,5 and 6 bars).
Caution: No intervention is authorized on the pump high fuel pressure.
VII - FUEL FLOW CONTROL UNIT
WITH - ROLEThe fuel flow control unit (20) modifies the active mass fuel rate of flow of the transfer pump towards the pump high fuel pressure.The pump high fuel pressure, compresses the necessary quantity of fuel required by the driving calculator.The reduced fuel flow control unit:
• the heating of the fuel,
• consumption by the pump high fuel pressure.
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11CITROEN Chapter 2
VIII - CRAWL Of INJECTION COMMON HIGH FUEL PRESSURE
WITH - ROLERole of the grout pipe system common high fuel pressure:• to store the quantity of fuel necessary to the engine whatever the
phase of use,
• to deaden the pulsations created by the injections,
• to connect the elements of the system high pressure.Elements connected to the grout pipe system common high fuel pressure:
• supply line high fuel pressure,
• supply lines of the injectors diesel, drain of the return carburizing towards
tank, sensor high fuel pressure.
14 - Sensor high fuel pressure27 - Return carburizing towards tank carburizing 28 - Arrival of the fuel high pressureFoot-note: The limiting device of pressure of the grout pipe system common high
fuel pressure makes it possible to limit the maximum pressure in the grout pipe system common high fuel pressure between 1400 and 1500 bars.
C - ESTABLISHMENTThe grout pipe system common placed between the pump high pressure and the injectors diesel is established on the back face of the driving block.
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12CITROEN Chapter 2
INJECTORS DIESEL (1131, 1132, 1133, 1134)
WITH - ROLEThe injectors diesel inject the fuel necessary to the operation of the engine.The direct fuel injection in the head of the pistons improves the output of the engine.The fuel can be injected into the following cases:• préinjection,• principal injection,• postinjection (if severized depollution, currently it is not used).
F - Return tank to fuel29 - Electric connector30 - Wind of electromagnetic sluice gate of order 31 - Spring of electromagnetic sluice gate of order 32 - Nut33 - Switch electromagnetic sluice gate of order 34 - diesel Nose of injector 35 - diesel nozzle Needle 36 - Room of pressure 37 - diesel Spring of injector 38 - Piston of order 39 - Room of order 40 - Jet of food 41 - Jet of the containing hydrocarbon return circuit42 - Inlet connection high fuel pressure 43 - laminar Filter included in the connection (43)
Foot-note: The laminar filter does not require maintenance.
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CITROEN13
Chapter 2
IX -
The quantity of fuel injected depends on the following parameters:
• duration of the electric drive (calculator of injection),
• speed of opening of the diesel injector,
• hydraulic flow of the diesel injector (a number and bore),
• fuel pressure in the grout pipe system common high pressurefuel.
Fuel pressures used in the system of direct injection HDIprohibit the direct electric drive of the injectors diesel.The diesel opening of the injectors is obtained by difference in pressure entersthe room of order (39) and the room of pressure (36).The diesel nozzle needle (35) is plated on its seat by the spring (37).The diesel nozzle needle (35) is surmounted by the piston of order (38) (the piston of order is free in its boring).The head of the piston of order emerges in the room of order (39).The room of order is in connection with the following circuits:
• system high pressure carburizing through the jet (40),
• return circuit to the tank carburizing by the jet (41).The room of order (39) is isolated from the return circuit of fuel by the needle of the electromagnetic sluice gate (33).The diesel nozzle needle (36 35) is plated on its seat by the spring (31).The fuel is distributed in an identical way between the rooms (39) and (36). The jet (41) is larger than the jet (40).The needle of the electromagnetic sluice gate rises as of the food of the reel of the electromagnetic sluice gate (magnetic field).Foot-note: Need for télécoder the class of the injectors in the diesel calculator
injection codes hexadecimal.
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14CITROEN Chapter 2
J - Closed diesel injectorK - Diesel opening of injector
33 - Switch electromagnetic sluice gate of order 35 - diesel nozzle Needle 36 - Room of pressure 37 - diesel Spring of injector 38 - Piston of order 39 - Room of order 40 - Jet of food 41 - Jet of the containing hydrocarbon return circuit
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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1 - Closed diesel injector
The effort exerted by the high pressure is identical between the room of order (39) and the room of pressure (36).The piston of order is motionless (plate against the diesel nozzle needle).The increase in pressure in the grout pipe system common high fuel pressure supports the closing of the diesel injector.
2 - Principle of Opening of a diesel injectorThe calculator of injection supplies the electromagnetic sluice gate of order.Phase of operation as soon as the needle of the electromagnetic sluice gate (33) rises under the action of the electromagnetic sluice gate of order (magnetic field):• a fuel east leakage creates through the jet (41),
• the fuel entry by the jet (40) does not compensate for the leakage by the jet (41),
• balance between the pressure of the rooms (39) and (36) is broken,
• the pressure present in the room of pressure (36) raises the diesel nozzle needle,
• the piston of order goes up,
• the fuel is sent in the head of piston.Foot-note: The fuel injection lasts as much as the electromagnetic sluice gate
of the diesel injector is supplied.Foot-note: Maximum lifting of the needle of electromagnetic sluice gate of
order: 0,06 Misters.
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
16CITROEN Chapter 2
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3 - Characteristics according to the duration of ordering of the electromagnetic
sluice gateOrder short duration:
• the piston of order presents a certain inertia,
• the needle of the diesel injector is slightly raised,
• the quantity of fuel injected is weak,
• the pressure of injection is lower than the pressure present in the grout pipe system high fuel pressure.
Order long duration:
• the piston of order and the diesel nozzle needle are completely raised,
• the quantity of fuel injected is large,
• the pressure of injection is equal to the pressure present in the grout pipe system high fuel pressure.
4 - Principle of closing of a diesel injector
Phase of operation as soon as the calculator of injection cuts off the supply of the electromagnetic sluice gate of the diesel injector:
• the spring (32) of the electromagnetic sluice gate plates the needle of the electromagnetic sluice gate (34) on its seat,
• the jet (41) is sealed,
• the fuel leakage towards the return circuit ceases,
• the rise in pressure in the room of order (32) causes the closing of the diesel injector,
• the balance of the pressures is restored between the rooms (39) and (36),
• the diesel injector is ready for a new cycle.
17CITROEN Chapter 2
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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X - CHARACTERISTIC OF THE DIESEL ORDERING OF THE INJECTORS
WITH - GENERAL INFORMATIONThe diesel ordering of the injectors is carried out by the stage of ordering of the calculator of injection.
The diesel stage of order of the injectors makes it possible to obtain the following tensions:
• a tension of 80 V at a peak necessary to the beginning of the diesel lifting of the injectors,
• a tension of 50 V necessary to the maintenance of the diesel opening of the injectors.
The stage of order integrated into the calculator of injection comprises a condenser which stores energy necessary to the diesel ordering of the injectors.
Between each injection, the calculator of injection sends impulses on the reel of the injector not requested.
The impulses create a tension induced to charge the stage of order (condensing).
Caution: The stage of order cannot take care in the presence of one of anomaly on the feeder of a diesel injector.
An internal system of safety to the calculator makes it possible to disconnect the stage from order to the shutdown.
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18CITROEN Chapter 2
REQUIREMENT: Taking into account the presence of tension raised at the boundaries of the calculator and injectors diesel, possible measurements of tension must be carried out with the recommended material.
B - ORDER ELECTROMAGNETIC SLUICE GATES OF THE INJECTORS DIESEL
Current of ordering of the diesel injector.Y - AmpsX - Duration
44 - Ringing current45 - Current of maintenance 46 - Phase of call 47 - Phase of maintenance 48 - End of orderThe power supply of an electromagnetic sluice gate breaks up into 2 phases:
• phase of call (tension and ringing current),
• phase of maintenance (tension and current of maintenance).
1 - Phase of call
The phase of call to for goal to cause a fast lifting of the needle of the electromagnetic sluice gate.The diesel electromagnetic sluice gate of injector is supplied in the following way:
• a tension of approximately 80 V,
• a current from approximately 20 A.
Foot-note: The phase of call is limited to a few milliseconds (0,3 ms). 2 -
Phase of maintenanceThe phase of maintenance makes it possible to continue to supply the electromagnetic sluice gate by limiting the absorptive electric output.The diesel electromagnetic sluice gate of injector is supplied in the following way:
• a tension of approximately 50 V,
• a current from approximately 12 A.Caution: It is interdict to supply a diesel injector in 12 V (destruction
of the electromagnetic sluice gate).
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
CITROEN19
Chapter 2
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XI - FUEL COOLER
WITH - ROLEThe pump high pressure rolls the fuel what raises the temperature of the fuel.
The fuel cooler cooled the fuel at the time of the return to the tank. B -
DESCRIPTION
The fuel cooler consists of a metal serpentine which supports heat
exchange between the fuel and the air. C - ESTABLISHMENTThe fuel cooler is fixed under the body.
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20CITROEN Chapter 2
FUNCTION: FOOD Of AIR
21CITROENChapter 3
22
Circulation of air (according to arrows): With - AirB - Exhaust fumes + air C - exhaust FumesNomenclature:
LOCATE DESIGNATION
NUMBER OF PART INDIAGRAMSELECTRIC
1 Calculator of injection 1320
2 Electromagnetic sluice gate of regulation of recycling (EGR)
1253
3 Vacuum pump
4 Winnow recycling of exhaust fumes(EGR)
5 Distributer of air inlet
6 Collector of exhaust fumes
7 Regulating valve of pressure ofoverfeeding: pressure control
8 Pneumatic capsule of order ofregulating valve (on turbocompressor):pressure control
9 Catalytic pot
10 Harness exhaust
11 Turbocompressor
12 Harness air inlet
13 Flowmeter of air + temperature sensor of air 1310
14 Air filter
15 Atmospheric pressure pick-up (integrated intocalculator of injection)
1320
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CITROENChapter 3
II - FILTER A AIR
Periodicity of replacement: every 60000 km.
III - TURBOCOMPRESSOR DV4TD
8
7 - Regulating valve of pressure of overfeeding8 - Pneumatic capsule of regulating valve gear 10 - Turbine of exhaust16 - Arrival of oil under pressure (cooling 17 - Return oils
WITH - ROLEThe turbocompressor allows overfeeding in air of the engine.There is only one type of assembly: pressure of overfeeding controlled by the regulating valve only.
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CITROEN23
Chapter 3
B - DESCRIPTION
Caution: The representation of the turbocompressor is symbolic system but operation is identical.
7 - Regulating valve of pressure of overfeeding8 - Pneumatic capsule of regulating valve gear:
pressure control10 - Harness exhaust12 - Harness air inlethas - Towards distributer of admissionB - Gas coming from the exhaust manifold
The turbocompressor is composed of two distinct rooms. The turbocompressor is composed of the following elements:
• a room related to the function exhaust of the engine,
• a room related to the function admission,
• a turbine and a compressor, made interdependent by a tree.
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24CITROEN Chapter 3
The turbine, setting in motion by exhaust fumes, actuates the compressor which ensures the compression of the allowed air.
Foot-note: Greasing of the turbocompressor: very high speeds of the moving parts and the strong temperatures to be dissipated, require a very neat greasing.
Oil under pressure necessary to this function is taken on the oil circuit of the engine.
The pressure of overfeeding is controlled by the regulating valve. At rest the regulating valve is closed.The pressure of overfeeding is controlled starting from the pressure of air in the inlet manifold.
Phases of operation at the time of the going beyond of the value of taring of the pneumatic capsule (8):
• the regulating valve of pressure of overfeeding opens,
• the speed of the turbine of exhaust decreases,
• the pressure of air of overfeeding decreases.The pressure decrease of overfeeding causes the closing of the regulating valve of pressure of overfeeding.
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CITROEN 25Chapter 3
REQUIREMENT: It imperative, before turning off the engine to return on the diet of idle. Nonthe observation of this condition involves, in the term, the destruction of the turbocompressor (lack of lubrication).
IV - FLOWMETER Of AIR (1310)
WITH - ROLEThe flowmeter of air measures the fresh air flow admitted by the engine. Role of the calculator of injection according to received information:
• to determine the rate of recycling of exhaust fumes,• to limit the formation of the fume during the transitional stages
(acceleration, deceleration) by correction of the containing hydrocarbon flow.
B - DESCRIPTION
16 - Electric connectorC - Protective grillD - Metal plate (hot film)E - Temperature sensor of air
The flowmeter of air is composed of the following elements:
• metal plate (hot film),
• temperature sensor of air.The metal plate is very fine and makes it possible to determine the mass of air entering the circuit of air.
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CITROEN 26Chapter 3
The metal plate is composed of the following elements:
• resistance of heating,
• resistance of measurement (CTN).The calculator of injection feeds the resistance of heating in order to maintain the metal plate at a fixed temperature.
The air passing in the flowmeter cools the metal plate: the resistance of measurement (CTN) varies.The calculator associates the value of the resistance of measurement a flow air.
C - ELECTRIC CHARACTERISTICS Assignment of the ways of the connector:
• 1 sees: information temperature of air
• sees 2: mass debimeter
• sees 3:
• sees 4: food debimeter (5Volts)
• sees 5: information air flow
• sees 6: mass
D - ESTABLISHMENTThe flowmeter of air is established between the air filter and the turbocompressor.
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
27CITROENChapter 3
REQUIREMENT: Not to touch with the metal plate, the use of a soufflette is proscribed.
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28CITROEN Chapter 3
FUNCTION: RECYCLING OF GASES
Of EXHAUST
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CITROEN 29Chapter 4
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Circulation of air (according to arrows): With - AirB - Exhaust fumes + air C - exhaust FumesNomenclature:
LOCATE DESIGNATIONNUMBER OF PART INELECTRIC DIAGRAMS
1 Calculator of injection 1320
2 Electromagnetic sluice gate of regulation of recycling (EGR)
1253
3 Vacuum pump
4 Winnow recycling of exhaust fumes(EGR)
5 Distributer of air inlet
6 Collector of exhaust fumes
7 Regulating valve of pressure ofoverfeeding: pressure control
8 Pneumatic capsule of order ofregulating valve (on turbocompressor):pressure control
9 Catalytic pot
10 Harness exhaust
11 Turbocompressor
12 Harness air inlet
13 Flowmeter of air + temperature sensor of air 1310
14 Air filter
15 Atmospheric pressure pick-up (integrated intocalculator of injection)
1320
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CITROEN 30Chapter 4
II - VACUUM PUMP
WITH - ROLEThe vacuum pump provides the depression necessary to the order of the following elements:
• winnow recycling of exhaust fumes (EGR) (according to version),• pneumatic capsule of ordering of the valve of recycling of exhaust
fumes,
• amplifier of braking.
B - DESCRIPTIONThe vacuum pump with pallets is pulled by the driving camshaft.
3 - Vacuum pump16 - Valve of safety (the valve is integrated into the connection of exit)A valve of safety integrated into the pump isolates the circuit from depression of the brakes, engine to the stop.The valve of safety makes it possible to preserve:
• a reserve of vacuum in the amplifier of brake,
• function recycling of exhaust fumes (regulation).
C - ESTABLISHMENTEstablishment: on cylinder head, in end of camshaft side gear box.
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31CITROEN Chapter 4
III - ELECTROMAGNETIC SLUICE GATE OF REGULATION OF RECYCLING (EGR) (1253)
WITH - ROLETo order the opening of the valve of recycling of exhaust fumes (EGR).
B - DESCRIPTIONThe electromagnetic sluice gate puts in communication the vacuum pump and the capsule of the valve of recycling of exhaust fumes.
has
17 - Electric connector has - Exit “use”B - Entry depression of the vacuum pump C - white MarkingD - Entry atmospheric pressure
The ordering of the electromagnetic sluice gate is of type RCO (cyclic report/ratio of opening).
The electromagnetic sluice gate proportional ordered in tension RCO is connected to the following elements:
• atmospheric pressure,
• depression provided by the vacuum pump.The pressure provided by the electromagnetic sluice gate lies between the atmospheric pressure and the depression of the vacuum pump.
C - ELECTRIC CHARACTERISTICSOrder: calculator of injection (mass). Order from variable tension (RCO):
• full food (maximum RCO) = maximum depression,• no food (minimum RCO) = not of depression (atmospheric pressure).Foot-note: RCO: Cyclic report/ratio of Opening.
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32CITROEN Chapter 4
IV - WINNOW RECYCLING OF EXHAUST FUMES (EGR)
WITH - ROLEThe valve of recycling of exhaust fumes controls the quantity of recycled exhaust fumes.
The device of recycling of exhaust fumes (EGR) makes it possible to decrease the quantity of nitrogen oxide (Nox) rejected by the exhaust.
The reduction in nitrogen oxides is carried out by reinjecting part of exhaust fumes in the cylinders.
The phases of recycling are memorized in cartographies of the calculator of injection.
4 - Winnow recycling of exhaust fumes (EGR)• - Entry depression (electromagnetic sluice gate of regulation of recycling of gases)F - Pneumatic capsule of ordering of the valve of recycling of gases
of exhaustCaution: The valve of recycling of gases is closed when it is not ordered
pneumatically (depression).Phases of operation when the pneumatic capsule of order is supplied with depression:
• the valve of recycling of gases opens,• part of exhaust fumes is absorbed by the engine (distributer of air
inlet).
C - ESTABLISHMENTThe valve of recycling is established on the exhaust manifold.
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33CITROEN Chapter 4
V - CATALYTIC POT
The catalytic pot is equipped with a catalyst 2 ways.
The catalytic pot (had on the line exhaust) allows the reduction in rejection in the atmosphere of the following components:
• carbon monoxide (CO),
• unburnt hydrocarbons (HC).
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34CITROEN Chapter 4
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FUNCTION: INJECTION
I - DRIVING CALCULATOR
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CITROEN 35Chapter 5
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BODIES
BSI Intelligent case of constraint
0004 Compound
1115 Sensor reference
1150 Case of pre-heating
1160 Preheating plugs
1211 Measure with fuel
1220 Water engine temperature sensor
1221 Thermister gas oil
1253 Electromagnetic sluice gate EGR
1261 Sensor position pedals accelerating
1276 Electric gas oil heater
1277 Actuator of flow (IMV)
1310 Flowmeter air and temperature air
1313 Sensor of engine speed
1320 Driving calculator
1321 Sensor high pressure gas oil
1331 Injector rolls n°1
1332 Injector rolls n°2
1333 Injector rolls n°3
1334 Injector rolls n°4
1620 Sensor speed conveys (vehicle
2100 Principal contactor of brake
2101 Contactor of redundant stop (vehicle
4050 Probe presence of
7306 Contactor pedal clutch
7308 Secondary contactor of brake
8009 Linear pressure pick-up of the cooling fluid
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
CITROEN 36Chapter 5
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CONNECTIONS
N° OFCONNECTION
1 Information on the position of the
2 Information temperature of
3 Information on temperature gas oil
4 Information position pedals accelerating
5 Information on the quantity of
Information on the temperature of
6 Information on engine speed
7 Information fuel pressure.
8 Information speed conveys (vehicleABSor ESP)9 Information redundant footbrake pedal (vehiclewithESP)10 Information water presence in the fuel
11 Information pedals of
12 Information contact of secondary brake (availableonly with the
13 Information of pressure of the circuit of refrigeration
14 order case
15 Order preheating plugs
16 Order of actuator of flow
17 Order electromagnetic sluice gategasesof exhaust18 Order mass calculator to feed itcontaining hydrocarbon
19 Order of the 4 injectors diesel (PULSATES)
20 Information level of fuel
21 Information level of fuel
22 Information brakes
23 Ask lighting of the indicators compound
24 Information measures
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
CITROEN 37Chapter 5
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II - CALCULATOR Of INJECTION (1320)
WITH -
DESCRIPTION
25 - Name of the system of injection (BOSCH EDC 16 C3) 26 - atmospheric Pressure sensor 27 - Date of coded manufacture28 - Material reference PSA29 - Software reference PSA
B - ROLEThe calculator manages the whole of the system of injection. The software of the calculator integrates the following functions:
• functionalities of control of the injection and depollution,
• strategies of approval of control,
• the function antidémarrage (ADC2),
• strategies of help,
• the management of the ordering of the motoventilateurs and the
indicators of alarm (*),
• the diagnosis with memorizing of the defects,
• the function regulation speed (*).(*) according to version.
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38CITROEN Chapter 5
The calculator ensures the electric control of the following elements:
• injectors diesel,
• regulator high fuel pressure,
• fuel flow control unit actuator (1208),
• electromagnetic sluice gate of regulation of recycling (EGR) (1253),• case of pre-heating and postheating (cut postheating), the calculator delivers following information:
• instantaneous consumption: towards intelligent case of
constraint,
• cut refrigeration.The atmospheric pressure pick-up is not dissociable calculator of injection.
The calculator comprises a stage of power able to provide the current of order very high necessary to the diesel operation of the injectors.
The actualization of the software of the calculator of injection is carried
out by remote loading (calculator equipped with a flash EPROM). C -
INJECTIONOn system EDC 16 C3 the driving calculator will determine the time of injection compared to the engine torque required and/or necessary.The driving calculator calculation the requirement in couple for the engine from:
• the request driver,
• the control of stability (ESP),
• speed regulator,
• operating mode (slowed down, full load…),• couples punctured (compressing of air-conditioning, power-assisted
steering, electric consumer).The driving calculator carries out all calculations in engine torque and it is only at the time to control the injectors that the driving calculator transforms the engine torque into time of injection.
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39CITROEN Chapter 5
• - ATMOSPHERIC PRESSURE PICK-UP (1320)The sensor measures the atmospheric pressure.Role of the calculator of injection according to received information:
• to determine the density of the air,
• to prohibit recycling in the event of rolling in altitude.
Foot-note: The density of the air decreases according to altitude.The atmospheric pressure pick-up (24) is integrated into the calculator of injection.
Caution: The atmospheric pressure pick-up is not dissociable calculator of injection.
• - DESCRIPTION
Connector CME (32 ways gray). Connector CMI (48 ways chestnut). Connector CH (32 ways black).The calculator of injection is connected to the beam of injection by 3 modular connectors.Order of assembly of the connectors:
• gray connector,
• maroon connector,
• black connector.
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CITROEN 40Chapter 5
1 - Assignment of the ways of the connectorhas - Connector CME (32 ways gray)
CONNECTOR AND WAYS SIGNAL
A1
A2
A3
A4 Diagnosis relay the pre one/post heating
B1
B2 +APC
B3
B4
C1
C2
C3
C4
D1
D2
D3
D4
E1
E2 Exit: order relay of pre/post heating
E3
E4
F1 Mass sensor
F2
F3
F4
G1 Injector rolls 4
G2 Injector rolls 2
G3 Injector rolls 1
G4 Injector rolls 2
H1 Injector rolls 1
H2 Injector rolls 3
H3 Injector rolls 4
H4 Injector rolls 3
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41CITROEN Chapter 5
B - Connector CMI (48 ways chestnut)CONNECTOR AND WAYS SIGNAL
A1 Mass sensor reference rollsA2A3A4B1 Entry: Signal sensor engine speedB2B3 Entry: Information speed conveysB4 Food pressure sensor gas oilC1 Mass sensor engine speedC2C3C4 Mass pressure sensor gas oilD1 Entry: Signal sensor reference rollsD2D3D4E1 Exit: Order principal relayE2 Mass flowmeter (Custom)E3E4F1F2 Entry: signal driving sensor temperature
waterF3 Food sensor engine speedF4 Food sensor reference rollsG1 Entry: signal flowmeter (Custom +)G2 Entry: Signal sensor temperature air
admissionG3 Entry: Signal pressure sensor gas oilG4H1 Mass driving sensor temperature waterH2 Entry: signal sensor temperature gas oilH3H4J1J2J3J4K1K2K3K4L1L2 Exit: Order electromagnetic sluice gate EGRL3L4M1M2 Exit: Order relay of powerM3M4 Exit: order governor volumetric (on
pump high pressure)
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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42CITROEN Chapter 5
C - Connector CH (32 ways black)
CONNECTOR AND WAYS SIGNAL
A1
A2
A3 Line dialogs: network EDGE H
A4 Line dialogs: network EDGE L
B1 Exit: order additional heating
B2 Order motoventilator group smallspeed (ground connection of the terminal)
B3
B4 Line diagnosis (line K)
C1 Exit orders additional heating
C2 Entry: sensor pedals accelerating (track n°2)
C3 +APC
C4 Diagnosis groups motoventilator
D1
D2
D3
D4 Exit: order motoventilator grouphigh speed (ground connection of the terminal)
E1
E2
E3 Entry: Signal contactor clutch
E4 Entry: information secondary footbrake pedal
F1
F2 Food sensor air-conditioning
F3
F4 Mass pressure pick-up of air-conditioning
G1
G2 Power supply of the sensor pedals accelerating
G3 Entry: sensor pedals accelerating (N°1 track)
G4 Mass
H1 Mass
H2 Entry: signal of the sensor of air-conditioning
H3 Mass sensor pedals accelerating
H4 Mass power
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43CITROEN Chapter 5
III - BATTERY (BB00)
The level of load of the battery is important for the operation of the system of direct injection HDI.Caution: A tension battery lower than 7 V disturbs the operation of the
system of direct injection HDI.The calculator memorizes a defect in the following cases:
• tension battery higher than 18 V,• tension battery lower than 6,5 V.
IV - SENSOR REFERENCE ROLLS (1115)
WITH - ROLEThe sensor of reference rolls informs the calculator of injection of the point died high in compression of each cylinder.The calculator of injection needs this information to order the injectors diesel in sequential mode (cylinder by cylinder in order 1-3-4-2).
B - DESCRIPTION
LOCATE DESIGNATION
30 Sensor reference rollsWith Not dead high cylinder N°2 (compression)
B Not dead high cylinder N°1 (compression)C Not dead high cylinder N°3 (compression)D Not dead high cylinder N°4 (compression)
has Target31 Pinion of distribution
C -
ESTABLISHMENTThe sensor is of type with Hall effect, it is fixed compared to a target integrated into the pinion of distribution of camshaft.
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44CITROEN Chapter 5
V - WATER TEMPERATURE SENSOR ENGINE (1220)
WITH - ROLEThe water temperature sensor informs the calculator of the temperature ofliquid of driving cooling.Role of the calculator of injection according to received information:
• to adjust the time of pre-heating,
• to adjust the time of postheating,
• to adjust the flow of starting,
• to adjust the mode of idle,
• to authorize the recycling of exhaust fumes (EGR),
• to adjust the mass fuel rate of flow,
• to limit the flow injected if the temperature of the liquid of cooling iscritical (function antiébullition),
• to order the starting of the motoventilateurs,
• to order the ratiometer with compound (*),
• to order the indicators of alarm and préalerte (*).Foot-note: (*) according to version.
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45CITROEN Chapter 5
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B - DESCRIPTIONThe water engine temperature sensor consists of a resistance to negative temperature coefficient (CTN).
The more the temperature increases, plus its value of resistance decreases.TEMPERATURE
WATERENGINE IN °C
RESISTANCENOMINAL IN OHMS
MINI RESISTANCEIN OHMS
RESISTANCEMAXIMUM IN OHMS
60 1266 1244 1288
80 642 632 652
100 345 338 352
120 198 194 202
32 - Water
engine
temperature
sensor.
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CITROEN 46Chapter 5
VI - TEMPERATURE SENSOR CARBURIZING (1221)
WITH - ROLERole of the calculator of injection according to received information:
• to adjust the mass fuel rate of flow,
• to calculate the density of the fuel.
B - DESCRIPTIONThe temperature sensor carburizing (33) consists of a resistance to negative temperature coefficient (CTN).
More the temperature increases more its value of resistance decreases.TEMPERATURE
FUELRESISTANCE MINIMUM IN
OHMSMAXIMUM RESISTANCE
IN OHMS
- 40 79 000 109 535
- 30 41 255 55 557
- 20 22 394 29 426
0 7 351 9 248
20 2 743 3 323
40 1 141 1 339
60 522 595
80 259 287
100 138 150
120 78 84
130 0,60 0,64
C - ESTABLISHMENT
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47CITROEN Chapter 5
VII - SENSOR ENGINE SPEED (1313)
Information engine speed on motorizations “FD” is provided by a new active sensor.
Specificities of the sensor of engine speed:• establishment side distribution,
• principle of operation for purpose of Hall,
• no adjustment or maintenance its
necessary. WITH - ROLE
The sensor makes it possible to determine:
• the engine speed,
• the position of the mobile
attachment. B - DESCRIPTION
B
B - Magnetic targetE - Air-gap
34 - Sensor engine speed
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CITROEN48
Chapter 5
counterfeit
C - OPERATIONThe target is made up 60 (58 + 2) even of magnetic poles distributed on the periphery whose two poles miss to locate the high dead point pistons 1 and 4.
Foot-note: By coupling two information sensor reference rolls and sensor engine speed the driving calculator determines the positon exact of each cylinder at the court of time.
The passage of the North Poles and southern of the target in front of the sensor modifies the output voltage of the sensor high state and low state.The frequency of the square signals produces by the passage of the poles of the target represents the number of revolutions of the engine.Attention at the following points:
• to wash the hands before any handling of the pinion,
• to avoid any shock and any deterioration of the magnetic track,
• the use of the tools projecting is proscribed,
• not to approach magnetic tools,
• not to exert efforts on the reinforcement of the target.
D - ESTABLISHMENT
The sensor with Hall effect (34) is fixed compared to a target on the pump housing at oil.The ferromagnetic target is fixed on the pinion of crankshaft.
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49CITROEN Chapter 5
The sensor provides a power proportional to the fuel pressure in the grout pipe system common high pressure (50 to 1500 bars).
B - ELECTRIC CHARACTERISTICS Assignment of the ways of the connector:
• 1 sees: mass
• sees 2: information pressure (0 to 5 V)
• sees 3: food + 5 V
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IX - CONTACTOR OF BRAKE (2100) - CHARACTERISTIC
WITH - ROLEThe contactor allows the calculator injection to ensure a good approval of control.The electric information given by the contactor of brake is transmitted into telegraphic to the BSI, and is sent to the calculator of injection by the multiplexed network (*).(*) according to version.
• - ESTABLISHMENTThe contactor of brake is established on the pedals.
X - CONTACTOR Of CLUTCH (7306) - CHARACTERISTIC
WITH - ROLEThe contactor of clutch allows the calculator injection to ensure the operation of the involved idle.
• - ESTABLISHMENTThe contactor of clutch is established on the pedals.
XII - CONTACTOR REDUNDANT FOOTBRAKE PEDAL (7308) - CHARACTERISTIC
WITH - ROLEThe contactor allows the calculator injection to ensure a good approval of control.Information coming from the contactors of brake is constantly compared between them in order to detect a possible defect.
• - ESTABLISHMENTThe contactor of brake is established on the pedals.
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51CITROEN Chapter 5
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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52CITROEN Chapter 5
FUNCTION: PRÉ-POSTCHAUFFAGE
Sees N° A4 of the connector 32 gray ways (CME). (diagnosis case of pre-heating).
Sees N° E2 of the connector 32 gray ways (CME).(order relay of the case prépostchauffage).
BODIES
BSI Intelligent
0004 Compound
1150 Case of pre-heating
1160 Preheating plugs
1320 Driving calculator
CONNECTIONS
N° OFCONNECTION
1 Ask lighting of the indicator of pre-heating
2 Ask lighting of the indicator of pre-heating
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53CITROEN Chapter 6
II - PREHEATING PLUGS (1160)
WITH - ROLEThe preheating plugs allow a fast rise of the temperature in the combustion chambers during the launching phase.
B - DESCRIPTION
Preheating plugs 11 V.Overall length 118,5 Misters.Constitution of the preheating plugs:
• a heating resistance,
• a metal envelope of protection.
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54CITROEN Chapter 6
III - CASE OF PRE-POSTCHAUFFAGE (1150)
WITH - ROLE
The case electrically supplies the preheating plugs according to the
orders of the calculator of injection.B - DESCRIPTION
Times of pre-postheating are determined by the calculator of injection. In the event of failure of the case of pre-heating, the calculator of injection memorizes a defect.
C - ELECTRIC CHARACTERISTICS
Assignment of the ways of the connector:
• N° 1 sees: mass,
• N° 3 sees: +12 V after contact,
• N° 4 sees: order relay of the case pre-postheating,
• N° 5 sees: diagnosis case of pre-heating,
• N° 8 sees: +12 V permanent,
• N° 9 sees: power supply of the preheating plugs.
D - ESTABLISHMENT
LOCATE DESIGNATION
3 preheating Plug
4 electrical Loom
5 Case of pre-heating
6 Cylinder head engine
55CITROEN Chapter 6
IV - PRÉ-POSTCHAUFFAGETimes of pre-heating and postheating are determined by the driving calculator according to the temperature of the liquid of driving cooling of the mode of idle and altitude.
WITH - OPERATION OF PRE-HEATING
T°eauengine
Time ofpre-heating(in second)
Mode ofidle intr/min
Pre-heatingin secondAltitude1000m
Pre-heatingin secondAltitude1500m
Pre-heatingin secondsAltitude2000m
80°C 0 750 0 0 020°C 0 800 0,5 2 30°C 0,5 890 1 5 5
- 10°C 5 950 5,5 9,5 9,5- 20°C 5 1050 5,5 9,5 9,5- 25°C 10 1075 10,5 12,5 12,5- 30°C 15 1100 15 15 15
B - OPERATION OF POSTHEATINGPostheating makes it possible to prolong the operation of the preheating plugs after the launching phase.Postheating makes it possible to decrease the pollutant emissions in the first minutes following starting.Postheating cold reduces the emissions of fume blue and in altitude.
DRIVING T°EAU
TIME OFPRE-HEATING(IN SECOND)
MODE OFIDLE IN TR/MIN
POST HEATINGIN SECOND
80°C 0 750 020°C 0 800 00°C 0,5 890 180
- 10°C 5 950 180- 20°C 5 1050 180- 25°C 10 1075 180- 30°C 15 1100 180
Parameters being able to stop postheating:
• water engine temperature higher than 65°C,
• engine speed higher than 3500 rpm,
• temperature of the air admission higher than 40°C,
• mass fuel rate of flow injected higher than 35 Mg/CP (between 0 and 2500
tr/min),• mass fuel rate of flow injected higher than 25 Mg/CP (engine speed
higher than 3000 tr/min),
• tension battery lower than 7,5 V.
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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CITROEN 56Chapter 6
FUNCTION: DRIVING COOLING (MONEY)
Functions of the calculator of injection:
• control starting and stop motoventilateurs (driving cooling),• control postventilation (during 6 maximum minutes),
• control lighting of the indicator of alarm temperature of water to compound,
• control ratiometer of temperature of water to compound,
• diagnosis of the operation of the motoventilateurs,
• acquisition of the water engine temperature,
• management of the degraded modes.
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57CITROEN Chapter 7
I - SYNOPTIC
Caption:Simple arrow: telegraphic connection triple Arrow: multiplexed connection
Foot-note: This synoptic represents a configuration assembled on Xsara 2.
DESIGNATIONNUMBER OF PART IN
ELECTRIC DIAGRAMS
Intelligent case of constraint BSI
Compound 0004
Water engine temperature sensor 1220
Calculator of injection 1320
Relay food low speed 1508
Relay food high speed 1509
Group motoventilator 1510
Relay average food speed 1514
Linear pressure pick-up of the cooling fluid 8009
Compressor of refrigeration 8020
Calculator of refrigeration 8080
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58CITROEN Chapter 7
CONNECTIONS
N° OFCONNECTION
1 Information temperature of
2 Information on the pressure of the cooling fluid
3 Order relay low speed
4 Food of the motoventilator group in low speed
5 Food of the motoventilator group in high speed
6Food of the motoventilator group on averagespeed
7 Order relay average speed
8 Order compressor of refrigeration
9Spark controlwater engine
10
State management refrigeration
State of the compressor of refrigeration
Order AC \ ONE
Information temperature of
11 Ask refrigeration
14
Authorization ofrefrigeration
Ask flickering of the indicator ofof water engine
Information temperature of
15Ask for authorization of interlocking of the compressorof refrigeration
16 Order relay high speed
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
CITROEN 59Chapter 7
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II - WATER TEMPERATURE SENSOR ENGINE (1220)
The water temperature sensor informs the calculator of the temperature of the liquid of driving cooling.
The water temperature sensor is established on the water case.
TEMPERATURE MINI RESISTANCE RESISTANCE IN MAXIMUM RESISTANCENOMINAL WATER ENGINE IN °C IN OHMS OHMS
IN OHMS
60 1266 1244 1288 80.642.632 652.100.345 338 352
120 198 194 202
From the shutdown, the calculator orders the postventilation, if the water temperature exceeds a certain threshold (*) (105°C).
(*) according to vehicle.
The postventilation is carried out into low speeds and hard to the maximum 6 minutes after the shutdown.
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CITROEN60
Chapter 7
IV - DEGRADED MODE
CHARACTERIZATION OFDEFECT OF THE PROBETEMPERATURE WATER
ENGINETHRESHOLD OF
DETECTION
INFORMATION - STRATEGY OFHELP - VALUE OFREPLACEMENT
Short-circuit with the massLower tension sensorwith 2,2V
Lighting seeing driving diagnosis
Lighting of the alert indicatortemperature water engineOpen circuit or short-circuit Higher tension sensor
with the +BAT with 4,9VReduced flow mode (3000 trs)Cut recycling of gasesof exhaust (EGR)Cut or intedictionof interlocking of the compressorof air-conditioning (AC/OUT)Group motoventilator into largespeedValue of replacementtemperature of the fuel during1 minute after the starting ofengine then 100°C
Coherence of the rise intemperature
ENGINE FD
Alarm temperature of water engine
Duration of post-ventilation
Threshold of temperature to the interlocking of post-ventilation(low speed)
Temperature of interlocking the low speed ofmotoventilator
Temperature of interlocking the high speed ofmotoventilator
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CITROEN 61Chapter 7
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V - COOLANT CIRCUIT
7 - Surge tank.8 - Case of water entry. 9 - Unit heater.
10 - Case of water exit.11 - Radiator of cooling.
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CITROEN62
Chapter 7
FUNCTION: NEED FOR COOLINGFOR AIR-CONDITIONING (BRAC)
Caption:Simple arrow: telegraphic connection triple Arrow: multiplexed connection
Foot-note: this synoptic represents a configuration assembled on Xsara 2.
DESIGNATIONNUMBER OF PART IN
ELECTRIC DIAGRAMS
Intelligent case of constraint BSICompound 0004Water engine temperature sensor 1220Calculator of injection 1320Relay food low speed 1508Relay food high speed 1509Group motoventilator 1510Relay average food speed 1514Linear pressure pick-up of the cooling fluid 8009Compressor of refrigeration 8020Calculator of refrigeration 8080
63CITROEN Chapter 8
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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CONNECTIONS
N° OFCONNECTION
1 Information temperature of
2 Information on the pressure of the cooling fluid
3 Order relay low speed
4 Food of the motoventilator group in low speed
5 Food of the motoventilator group in high speed
6 Food of the motoventilator group on average speed
7 Order relay average speed
8 Order compressor of refrigeration
9Spark control of the indicator of alarm of temperaturewater engine
10
State management refrigeration
State of the compressor of refrigeration
Order AC \ ONE
Information temperature of
11 Ask refrigeration
14
Authorization of interlocking of the compressor ofrefrigeration (AC \ OUT)
Ask flickering of the indicator ofof water engine
Information temperature of
15Ask for authorization of interlocking of the compressorof refrigeration (AC \ TH)
16 Order relay high speed
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CITROEN 64Chapter 8
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II - LINEAR PRESSURE PICK-UP OF THE FLUID COOLING (8009)
WITH - ROLEThe sensor measures the value of the pressure in the circuit refrigeration. Role of the calculator of injection according to received information:
• to authorize the starting of the motoventilator (cooling condenser of air-conditioning),
• to authorize the interlocking of the compressor of air-conditioning. B -
DESCRIPTION
The sensor is of the piezoelectric type.The sensor is composed of strain gauges.The linear sensor provides a power proportional to the pressure of the circuit refrigeration.Identification: black connector.
Foot-note: The electric information given by the sensor is transmitted into telegraphic to the calculator of injection, and is sent to the intelligent case of constraint by the multiplexed network.
Value of pressureINTERLOCKING OF
MOTOVENTILATEUR CUT OF THE MOTOVENTILATEUR
Smallspeed
Averagespeed
Largespeed
Smallspeed
Pressure(bar) 10 16 22 7
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65CITROEN Chapter 8
C - ELECTRIC CHARACTERISTICS Assignment of the ways of the connector:
• 1 sees: food 5 V
• sees 2: information pressure (0 to 5 V)
• sees 3: massPower provided for a pressure of 1 bar: + 0,5 volt. Power provided for a pressure of 31 bars: + 4,5 V.
• - ESTABLISHMENTThe sensor is established on the condenser of air-conditioning.
• - DEGRADED MODERole of the calculator of injection at the time of a failure of the pressure controller:
• to prohibit the ordering of the compressor of refrigeration (AC/OUT),
• recording of a defect in the driving calculator.The motoventilator group is not functional any more for the needs forcooling associated with the refrigeration.
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66CITROEN Chapter 8
III - ADDITIONAL HEATING
WITH - GENERAL INFORMATIONTaking into account the high output of the engine, it is necessary to assist the rise in temperature of the cockpit at the time of low temperatures.The assistance of rise in temperature of the cockpit is ordered by the case of constraint intelligent and controlled by the driving calculator.Two devices are used according to the countries of marketing.several immersion heaters (electric resistances) auxiliary established on the water circuit of the unit heaterA boiler (or burner) additional fed while carburizing is established in the passage of nose gear wheel left (vehicle cold large country)
Foot-note: On Xsara 2 equipped with injection BOSCH EDC 16 C3 the system of boiler is abandoned.
B - SYNOPTIC
Caption:
Simple arrow: telegraphic connection triple Arrow: multiplexed connection
BODIES
BCP3 Switching unit
1190 Heater driving circuit water
1320 Driving calculator
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CITROEN67
Chapter 8
CONNECTIONS
N° OFCONNECTION
1 Order relay R1A (in BCP3) by ground connectionexit driving calculator (32 ways B1 black)
2 Power circuit for two resistancesadditional
3 Power circuit for two resistancesadditional
4 Order relay R2B (in BCP3) by ground connectionexit driving calculator (32 ways C1 black)
5 Ask additional heating
C - OPERATING CONDITIONTe
Your - Temperature of surrounding airTe - water engine Temperaturehas - Example 1 B - Example 2With - Zone of authorization of reheating B - Zone of prohibition of reheatingThe intelligent case of constraint (BSI) determines the need for additional heating to starting according to the temperature surrounding air and for the temperature water engine.Example 1:
• Temperature water engine = 70°C,
• Outside temperature = 10 °C,• The conditions of temperatures are apart from the zone of starting:
there is no reheating.
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CITROEN 68Chapter 8
Example 2:
• Temperature water engine = 40°C,
• Outside temperature = - 10°C,• The conditions of temperatures are in the zone of starting of the
additional heating.
The BSI determines the need for heating of the cockpit to starting according to the temperature of surrounding air and of the water engine temperature.
The intelligent case of constraint orders the immersion heaters under the following conditions:
• engine under operation since 60 seconds,
• engine speed higher than 700 rpm,
• tension battery higher than 12 V (positive load analysis),
• water engine temperature higher than 40°C.The intelligent case of constraint orders the stages of reheating gradually:
• first stage,
• second stage.The end of ordering of the additional heating intervenes as soon as the conditions of temperature allow it (curve).
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69CITROEN Chapter 8
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70CITROEN Chapter 8
MAINTENANCE
I - RECOMMENDATION CONTAINING HYDROCARBONCaution: The addition of products additivés such as cleaning
fuel/remétallisant system is prohibited.
II - SECURITY INSTRUCTIONS
WITH - PREAMBLEAll the interventions on the system of injection must be carried outin accordance with the following regulations and regulations:• proper authorities as regards health,• prevention of the accidents,• environmental protection.Prohibition to smoke in the vicinity immediate of the system high pressure at the time of intervention.To avoid working near flame or of sparks. Turning engine:• not to intervene on the system high pressure containing hydrocarbon,• to always remain out of reach possible fuel jet which can cause
serious wounds,• not to approach the hand close to an escape on the system high
pressure containing hydrocarbon.After the shutdown, to wait 30 seconds before any intervention.
Foot-note: The latency is necessary to the return to the atmospheric pressure of the system high pressure containing hydrocarbon.
Caution: The interventions must be carried out by specialized personnel informed of the security instructions and precautions to be taken.
Caution: It is interdict to intervene on the turning system high pressure containing hydrocarbon driving.
Caution: Before any demounting of the calculator of injection: to wait 30 seconds after the cut of the contact, and to disconnect the negative terminal of the battery.
Caution: It is interdict to disconnect a driving diesel injector turning (risk of deterioration of the engine).
Caution: Not to order a diesel injector, out of the cylinder head, if its body is not connected to the mass (electrostatic risk of discharge).
Caution: Not to force on the pins of the connectors, during the demounting of the calculator of injection.
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71CITROEN Chapter 9
III - EXCHANGES OF PARTS – OPERATIONS TO BE REALIZED
WITH - PRELIMINARY OPERATIONSBefore intervening on the circuit of injection, it can be necessary to carry out the cleaning of the connections of the following sensitive elements (see corresponding operations):• filter fuel,• pump high fuel pressure,• crawl of injection common high fuel pressure,• drains high fuel pressure,• carry-injectors diesel.
B - EXCHANGES OF PARTS
Caution: Before any addition or replacement of parts, to make sure that the customer is in possession of his confidential chart.
C - PROHIBITED OPERATIONS Deposit-rests:• sensor high fuel pressure on grout pipe system common high fuel
pressure,• volumetric governor (1208) on pump high fuel pressure,• temperature sensor carburizing on connection 4 ways.
ELEMENTSREPLACE
OPERATION TO BE CARRIED OUTOBSERVATION/INFORMATIONNECESSARY
Driving calculator
Appairage with the intelligent case of constraintTélécodage driving calculator
Télécoder hexadecimal numbers of eachdiesel injector with the corresponding cylinder
Code customerDescription ofthe equipment ofconveyNumber WINE
Diesel injector In the event of replacement of a diesel injector,télécoder 8 hexadecimal numbers ofeach diesel injector with the cylinder
Case ofconstraintintelligent
Appairage with the driving calculator Code customerNumber WINEAll keys
Case ofconstraint engine
Nothing Case of constraintspecific engineaccording to version
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72CITROEN Chapter 9
REQUIREMENT: After disassembling, to immediately seal the connections of the sensitive elements with stoppers, to avoid the entry of impurities.
REQUIREMENT: To respect the tightening torques of safety of the elements of the below carburizing system high pressure, with a periodically controlled torque wrench.
D - TRAINING OF the CALCULATOR Of INJECTIONCaution: The exchange of a calculator of injection between two
vehicles, results in the impossiblity to start the vehicles.During the exchange of a calculator of injection, it is necessary to proceed to a training of the system antidémarrage.Conditions to respect to carry out a training of the system antidémarrage:• to be in possession of the access code to the intelligent case of
constraint (registered on confidential chart customer),
• to be in possession of a calculator of injection nine,
• to use the tool for diagnosis,• to carry out a procedure of training of the driving calculator:
“TRAINING DRIVING CALCULATOR”,
• to proceed to the remote loading of the calculator of injection (if
necessary).
1 - Télécodage of the calculator of injectionThis procedure makes it possible to reduce the number of references of calculators.Parameters télécodables:
• driving cooling (motoventilator group),
• pressure pick-up of refrigeration,
• speed conveys,
• additional heating,
• calculators.
2 - Remote loading of the calculator of injectionThe actualization of the software of the calculator of injection is carried out by remote loading (calculator equipped with a flash EPROM).
Foot-note: This operation is carried out by means of the tools for diagnosis.
73CITROEN Chapter 9
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
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IV - PROCEDURES OF RETURN IN GUARANTEE
With - ELEMENTS OF the SYSTEM Of INJECTIONBefore return towards the center of expertise, the following elements must be sealed, placed in a bag plastic and conditioned in their packing of origin:
• injectors diesel,
• pump high fuel pressure,
• crawl of injection common high fuel pressure,
• sensor high fuel pressure,
• filter fuel.
B - CALCULATOR Of INJECTIONThe disconnection of the calculator of injection involves its automatic locking.
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74CITROEN Chapter 9
REQUIREMENT: In the event of return of part to the guarantee voucher, to turn over the calculator of injection with the access code.
DIAGNOSIS
STATION PROXIA: 4165 - T
STATION LEXIA: 4171 - T
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75CITROEN Chapter 10
I - TOOLS
counterfeit
II - FUNCTIONS OF THE TOOLS
WITH - STATION PROXIA: 4165TThe tool allows:
• identification of the calculator,
• history,
• reading of the codes defects,
• the obliteration of the defects,
• measurements of the variable parameters associated,
• the test of the actuators,
• the update of the calculator by remote loading,
• consultation of the electric diagrams,
• identification of the calculator.
B - STATION LEXIA: 4171TThe tool allows:
• identification of the calculator,
• history,
• reading of the defects,
• the obliteration of the defects,
• measurements of the variable parameters associated,
• the test of the actuators,
• the update of the calculator by remote loading,
• consultation of the electric diagrams,
• identification of the calculator.
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76CITROEN Chapter 10
77
III - SCREENS OF TOOLS LEXIA/PROXIA
WITH - READER DEFECTS
DESCRIPTION OF THE DEFECT
Heading Type
Defect signal pressure air-conditioning Room
Defect authorization orders Room
not received air-conditioning
Defect signal pedals accelerating Room
Defect signal flowmeter Room
Defect circuit air inlet Room
Defect circuit additional heating Room
1
Defect circuit additional heating Room
2
Defect signal pedals accelerating 1 Room
Defect signal pedals accelerating 2 Room
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CITROEN Chapter 10
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DESCRIPTION OF THE DEFECT
Heading Type p-code
Defect interns calculator Room
P1118
P1117
Defect signal tension battery RoomP0563
P0562
Defect signal contactor brake Room P0571
Defect signal temperature waterengine Room
P0116
P0118
P0117
Defect signal contactorclutch
Room P0704
Defect signals temperature air Room P0111
Defect télécodage Room P1613
Defect orders electromagnetic sluice gateEGR
Room
P1410
P1409
P0403
Defect signal camshaft Room
P0342
P0343
P0341
P0344
Defect signal engine speed Room
P0337
P0338
P0336
P0339
Defect Function CoolingIntegrated into the Calculator
Room P0483
Defect orders high speedGMV
Room P0480
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CITROEN 78Chapter 10
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DESCRIPTION OF THE DEFECT
Heading Type
Defect orders low speed Room
GMV
Defect signal temperature gas oil Room
Defect circuit relay pre-heating Room
Defect calculator Room
Defect eeprom Room
Analogical defect converter - Room
digital
Defect signal temperature airadmission
Room
Defect coded anti-starting Room
Defect orders injecting Room
Defect injecting circuit rolls 1 Room
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CITROEN 79Chapter 10
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DESCRIPTION OF THE DEFECT
Heading Type p-code
P0201
P0263
P0265
P0264
Defect injecting circuit rolls 2 Room P0202
P0266
P0268
P0267
Defect injecting circuit rolls 3 Room P0203
P0269
P0271
P0270
Defect injecting circuit rolls 4 Room P0204
P0272
P1209
Defect actuator of fillingpump high pressure gas oil
RoomP1210
P1208
P0230
Defect regulating circuit of
P0231
high pressure gas oil P0232
P0233
Defect regulating circuit ofhigh pressure gas oil
RoomP1200
P1201
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CITROEN 80Chapter 10
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DESCRIPTION OF THE DEFECT
Heading Type
Defect circuit relay of foodsystem of injection
Room
Defect communication EDGE Distant
Defect signal pressure gas oil Room
Defect food sensor pedalsaccelerator
Room
Defect food sensorsmode, pressure air-conditioning andcamshaft
Room
Defect food sensorpressure rail
Room
Defect food calculator in+après contact Room
Defect signal speed conveys
Room
Distant
Defect engine torque Room
Internal defect temperaturecalculator
Room
Defect engine stoppage Room
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CITROEN 81Chapter 10
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B - READER OF the PARAMETERS Values as an indicationIdling engine; Temperature engine with 80°C without consumption electric.
PARAMETERS UNITVALUE OF
REFERENCE DEFINITION OF THE PARAMETER
Engine speed Rpm 750 Mode of rotation of the engine ina number of revolutions per Synchronization tree
withcams/crankshaft
yes Detection of the signal coming fromsensor of reference rollsauthorizing driving startingFuel pressure
measuredBars 310-320 Fuel pressure measured
in the slope high pressure
Consign pressurefuel
Bars 310-320 Fuel pressure withto reach in the high slopepressure
Governor volumetric RCOfuel
% Rate of opening ofthe electromagnetic sluice gate of regulation offuel pressure inpump high fuel pressureFlow injected Mg/blow 4 Mass fuel rate of flow inthe injector
Correction flowinjector rolls X
Mg/blow Correction of the flow injected ofX°cylindre by the calculatorengineConsign flow gas oil Mm3: blow Mass fuel rate of flow to be reachedin the slope high pressureFlow measured air Mg/blow 200-220 Air flow measured forpiloting of valve EGR
Consign air flow Mg/blow 200-220 Air flow to be reached ininlet manifold forpiloting of valve EGR
RCO winnows EGR % 0 Rate of opening ofthe electromagnetic sluice gate of recycling ofexhaust fumesAdvance pre-injection ° 10 Moment of injectionpilot (1°injection) compared toPMH
Advance injectionprincipal
° - 2 Moment of injectionprincipal (2°injection) by report/ratiowith the PMHTemperature water
engine°C 80 Allowed water temperature by
the driving calculator following theminformation of the sensorTemperature containing
hydrocarbon°C 70 Temperature of the fuel of
return circuit of gas oil
Temperature airadmission
°C 25 Temperature air admission takenin the flowmeter of air
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CITROEN 82Chapter 10
PARAMETERS UNITVALUE OF
REFERENCE DEFINITION OF THE PARAMETER
Atmospheric pressure Mbars 1013 Pressure of the ambient airmeasured by the internal sensorwith the calculatorTension battery Volt 12 to 14,7 Tension of the measured batteryby the driving calculatorTension +APC Volt 12 to 14,7 Tension of + crossed bycontact measured bydriving calculator of injection
Pre-post relayheating
Inactive State of the ordering of the relayof power supply of the candles ofAsk cut
air-conditioningNot State of prohibition by
calculator of the activation ofcompressor of air-conditioning
Pressure air-conditioning
Bar 5 Pressure of the cooling fluidacquired by the calculatorof injection engine
Relay GMV Not
Speed GMV 0 Mode of rotation ofmotoventilator (varies0%à100%)
Consign speed GMV 0 Mode of rotation ofmotoventilator requested bycalculator according towater temperature and ofair-conditioning
Flow injected measured Mg/blow 4 Mass fuel rate of flow of eachinjector at the time of a driving cycleConveyed speed Km/h 0 Speed acquired by the sensorgone up on the gear boxor by the network EDGE
Position pedalsof accelerator
% 0 Position measured by the sensoraccelerator pedalReport/ratio BV 0 Report/ratio of gear boxcalculated according to the modeengine and speed conveysPedal principal brake Slackened Information given bysensor of footbrake pedal (informationcoming from the BSI)Flow injected measured Mg/blow 4 Given mass fuel rate of flowby the time of injection andfuel pressure
Temperature calculator °C Temperature acquired bysensor interns with the calculator.A temperature higher than70°C prohibits the remote Clutch pedal Slackened Information given bysensor position pedalsof clutch (comfort ofcontrol)
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PARAMETERS UNITVALUE OF
REFERENCE DEFINITION OF THE PARAMETER
State of the calculator -
Calculator notlocked
The operation of the engine isauthorized
Calculatorlocked
Impossibility of startingPossibility of carrying them outoperations of diagnosisfollowing:• Identification• Reading defect• Parameters measurements• Télécodage
State study The calculator is notboltable
State Afterwards
Sale
The calculator is delivered locked.To carry out the training ofcode calculator then oneappairage
State ofprogramming -
Programmed 1faith
The calculator is locked.To carry out newtraining of the codecalculator then a appairage
antidémarrage coded Programmed 2time
The calculator is locked.To carry out newtraining of the codecalculator then a appairage
Programmed 3time
Calculatorappairé
The calculator is locked.To make a training of the codeaccess of the BSIThe function antidémarrage codedis functional
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CITROEN 84Chapter 10
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C - LISTS OF THE TÉLÉCODAGESHEADING CHOICE TELECODAGE
Driving coolingGMV mono speed
GMV Bi or tri speed
Pressure sensorair-conditioning
No air-conditioning
Linear pressure sensor
Gear box Long manual box
Classify alternator Classify 15
Additional heatingNo additional heating
Candles ordered by the BSI
Configuration calculator
Without regulation speed, control of stability (ESP)
Without regulation speed, with control of stability (ESP)
With regulation speed, without control of stability (ESP)
With regulation speed, control of stability (ESP)
Configuration bodyDirection on the left
Direction on the right
During the replacement of a diesel injector (1) or of replacement of the driving calculator one needs télécoder the eight numbers hexadecimal (2) of each diesel injector for the corresponding cylinder, using the tool for diagnosis.
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CITROEN 85Chapter 10
IV - DEGRADED MODE
WITH - VISUALIZATION OF THE DEFECTSThe appearance of certain defects in the system of injection results in the lighting of indicator to compound.
2 3
Lighting seeing driving diagnosis (2):
• governor volumetric defect on pump high fuel pressure,
• defect food (5 V) pedal accelerator,
• defect food (5 V) sensor high fuel pressure,
• defect sensor pedals accelerating,
• defect sensor high fuel pressure,
• defect driving sensor temperature water,
• defect recycling of exhaust fumes,• defect regulation pressure of the grout pipe system common high
fuel pressure,
• defect injectors diesel,
• defect relay of pre-postheating,
• defect télécodage driving
calculator. Driving indicator
temperature water (3):
• the indicator ignites if the temperature water engine reached 118°C,• the indicator dies out if the temperature water engine goes down in
lower part from 117°C,
• the indicator flickers in the event of rupture of the powerline of the temperature sensor water engine,
• defect groups motoventilator.
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B - STRATEGY OF HELPTo the appearance of one or more defects the driving calculator passes in degraded mode and active of the strategies of help for stage to the defect.If the defect is important the driving calculator limits the engine speed to 3000 tr/min or with 1200 tr/min (limp home)Reduced mass fuel rate of flow:
• this operating mode degraded limit mass fuel rate of flow,• the engine speed cannot exceed 3000 tr/minutes, Limp home:• this operating mode degraded limit mass fuel rate of flow in the
event of serious problem,
• the engine speed cannot exceed 1200 tr/min,
• this mode makes it possible to join the point of service nearest.Foot-note: Certain defects cause the engine stoppage or prohibition to start the
thermal engine.Foot-note: When the temperature of the gas oil is higher than 90°/95°C the driving
calculator limits the quantity of fuel injected
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87CITROEN Chapter 10
V - DEFECTS SENSORS
CHARACTERIZATION OFDEFECT
THRESHOLD OF DETECTION
INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT
Absence of signal If the signal is erroneous beforesynchronization with the sensorengine speed the starting of
Erroneous signal
impossible.If the signal is erroneous in handof use the calculatorengine will order the stop ofengine.
B - SENSOR FLOWMETER Of AIR (1310)
CHARACTERIZATION OFDEFECT THRESHOLD OF
DETECTION
INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT
Important drift ofmeasure
Measure except cartography
Short-circuit with the mass Air flow lower than 9 kg/HAnd higher engine speedwith 150 tr/min
Cut of the recycling of gasesof exhaust according tomode and of the load engine
Short-circuit with + or circuitopened
Air flow higher than500 kg/H
CHARACTERIZATION OFDEFECT
THRESHOLD OF DETECTION
INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT
Short-circuit with the mass Tension sensor lower than0,1 V
Value of replacement 50°C
Short-circuit with the +BAT Higher tension sensorto 4,75 V
Value of replacement 50°C
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CITROEN
D - SENSOR PEDALS ACCELERATING (1261)
CHARACTERIZATION THRESHOLD OF DETECTION
INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT
Detection pedalsblocked accelerator(coherence with pedal ofbrake)
Engine speed higher than1100 tr/minSpeed conveys higher than2,5 km/h% acceleration superior with20%support on brake higher than1seconde
Limp home (1200 tr/min)
Coherence of the N°1 way and2 ways of the sensor
Except beach carthography Sees weakestReduced flow (3000 tr/min)
N°1 short-circuit sees withmass
Tension sensor lower than0.9 V
The driving calculator takes incount the second track ofsensor pedalsFlow mode reduced to 3000 tr/min
N°1 short-circuit sees with+BAT or open circuit
Higher tension sensorto 4,75 V
The driving calculator takes incount the second track ofsensor pedalsFlow mode reduced to 3000 tr/min
N°2 short-circuit sees withmass
Tension sensor lower than0.9 V
The driving calculator takes incount the second track ofsensor pedalsFlow mode reduced to 3000 tr/min
N°1 short-circuit sees with+BAT or open circuit
Higher tension sensorto 4,75 V
The driving calculator takes incount the second track ofsensor pedalsFlow mode reduced to 3000 tr/min
Sees N°1 and 2 defective Limp home (1200 tr/min)
E - PRESSURE SENSOR OF AIR-CONDITIONING (8009)
CHARACTERIZATION OFDEFECT THRESHOLD OF
DETECTION
INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT
Open circuit or short-circuitwith the mass
Tension sensor lower than0,2 V
Cut of the compressor ofair-conditioningValue of replacement100Kpa
Short-circuit with the +BAT Higher tension sensorto 4,95 V
Cut of the compressor ofair-conditioningValue of replacement100Kpa
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CITROEN 89Chapter 10
CHARACTERIZATION OFDEFECT THRESHOLD OF DETECTION
INFORMATION - STRATEGY
Open circuit or short-circuit Tension sensor lower than Lighting of the indicator dignostic
with the mass 0,25 V engine
Short-circuit with the +BAT Higher tension sensor Reduced flow mode to 4,95 V
Cut engine
CHARACTERIZATION OFDEFECT THRESHOLD OF DETECTION
Absence of signal
Erroneous signal
Temporary absence ofsignal
Signal temporarilyerroneous
H - SENSOR TEMPERATURE INTERNS DRIVING CALCULATOR (1320)
CHARACTERIZATION OFDEFECT THRESHOLD OF
DETECTION
INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT
Short-circuit with the mass Tension sensor lower than0,05 V
Value of replacement 20°C
Short-circuit with the +BAT Higher tension sensorto 4,75 V
Value of replacement 20°C
CHARACTERIZATION OFDEFECT
THRESHOLD OF DETECTION
INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT
Open circuit or short-circuitwith the mass
Tension sensor lower than2,2 V
Value of replacement900 mbars
Short-circuit with +BAT Higher tension sensorto 4,75 V
Value of replacement900 mbars
SYSTEM Of INJECTION HDI BOSCH EDC 16 C3 FOR ENGINE DV4TD
J - CARBURIZING SENSOR TEMPERATURE (1221)INFORMATION - STRATEGY
HELP - VALUE OFREPLACEMENT
Tension sensor lower than
2,2 VValue of replacement 70°C
Short-circuit open or courtcircuit to the +BAT
Tension sensor higher than 4,75 V
Value of replacement 70°C
K - DRIVING SENSOR TEMPERATURE WATER (1220)
CHARACTERIZATION OFDEFECT
THRESHOLD OF DETECTION
INFORMATION - STRATEGYHELP - VALUE OF
Short-circuit with the mass Tension sensor lower thanREPLACEMENT
Lighting seeing diagnosis2,2 V engine
Open circuit or short-circuit Higher tension sensor Lighting of the alert indicatorwith the +BAT to 4,9 V temperature water engineCoherence of the rise intemperature
Reduced flow mode (3000 tr/min)Cut recycling of the gasof exhaust (EGR)Cut or intedictionof interlocking ofcompressor of air-conditioning(AC/OUT)Group motoventilator inhigh speedValue of replacementtemperature of the fuelduring 1 minute afterstarting of the engine then100°C
INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT
Tension food N°1 sensor pedals accelerating too low or too high
Tension higher than 5,3 V or tension lower than 4,7 V
Lighting seeing driving diagnosisLimp home
Tension food N°2 pressure sensor of air-conditioning, sensor engine speed, sensor camshaft
Tension higher than 5,3 V or tension lower than 4,7 V
Tension food N°3 pressure sensor of the grout pipe system common high fuel pressure
Tension higher than 5,3 V or tension lower than 4,7 VLighting of the driving indicator dignosticReduced flow mode (3000
tr/min) Cut engine Strategy of helpapplied to the defective sensors
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CITROEN 91Chapter 10
CHARACTERIZATION OF
Short-circuit with the
mass
THRESHOLD OF
DETECTION
CHARACTERIZATION OF
DEFECT
THRESHOLD OF
DETECTION
Strategy of help applied to the defective sensors
VI - DEFECT ADDITIONAL FUNCTIONS
WITH - FUEL FLOW CONTROL UNIT (1208)
CHARACTERIZATION OFDEFECT
THRESHOLD OF DETECTION
INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT
Short-circuit with the mass Reduced flow mode (3000 tr/min)Lighting of the indicator diagnosisengineCut enginePassage in regulation bucklesopened
Short-circuit with the +BAT
Open circuit
Coherence onelectric consumption
Passage in regulation bucklesopened
CHARACTERIZATION OFDEFECT THRESHOLD OF
DETECTION
INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT
Short-circuit with the mass,short-circuit with the +BAT, circuitopened
C - DEFECT COMMUNICATION ON THE NETWORK EDGE
CHARACTERIZATION OFDEFECT THRESHOLD OF
DETECTION
INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT
Dumb driving calculatorValue of replacement forthe impacted parameters EDGE
Absence of communicationwith the BSI
CHARACTERIZATION OFDEFECT THRESHOLD OF
DETECTION
INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT
Absence of signal or signalincoherent
8 changes of report/ratiowithout modification of the signalpedal clutch
E - CONTACTOR SECONDARY OR REDUNDANT FOOTBRAKE PEDAL (7308)
CHARACTERIZATION OFDEFECT THRESHOLD OF
DETECTION
INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT
Coherence between brakethe main thing and secondary
Strategy case of constraintintelligent
Brake not supported
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CITROEN92
Chapter 10
CHARACTERIZATION OFDEFECT
THRESHOLD OF DETECTION
Short-circuit with the mass Cut recycling of gasesof exhaust Short-circuit with +BAT
Open circuit
CHARACTERIZATION OFDEFECT
THRESHOLD OF DETECTION
Flow air lower thanconsign
Flow air higher thanconsign
H - REGULATION PRESSURE OF the GROUT PIPE SYSTEM COMMON HIGH FUEL PRESSURE
CHARACTERIZATION OFDEFECT
Pressure lower thanconsign
Consign too highflow of filling ofpump high pressurefuel
Consign too lowflow of filling ofpump high pressurefuel
THRESHOLD OF DETECTION
Derives of more than 350 barswhen the engine speed islower than 800 tr/minDerives of more than 200 barswhen the engine speed ishigher than 800 tr/minDerives from the pressure ofcrawl of common injection
high fuel pressurehigher than 150 bars andconsign flow offilling of the pumphigh fuel pressure
higher than an evaluated threshold
according to modeengine.Derives from the pressure of
INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT
Lighting of the indicator diagnosisengine
Reduced flow mode (3000 tr/min)
Reduction of the instruction of200 bars
Lighting of the indicator diagnosisengine
Reduced flow mode (3000 tr/min)
Cut injection
Lighting of the indicator diagnosisengine
Pressure of the slopeof high common injectionfuel pressurelower than the pressureminimal
Pressure maximum ofcrawl of common injectionhigh fuel pressureexceeded
Pressure of the slopeof high common injectionlower fuel pressurewith a threshold evaluated in functionengine speed (includingbetween 0 and 220 bars)Pressure of the slopeof high common injectionfuel pressurehigher than 1450 bars
Lighting of the indicator diagnosisengineReduced flow mode (3000 tr/min)Cut of the injection
Lighting of the indicator diagnosisengine
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I - GROUP MOTOVENTILATEUR
CHARACTERIZATION OFDEFECT
THRESHOLD OF DETECTION
INFORMATION - STRATEGYHELP - VALUE OFREPLACEMENT
Coherence between speed ofgroup motoventilator andconsign
Lighting seeing alarmtemperature water engineCut of the compressor ofair-conditioning
Short-circuit with the mass orwith + of the relaise ofsmall or large orderspeedOpen circuit of the relayssmall or high speed
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ELECTRIC DIAGRAM
I - GENERAL DIAGRAM
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CITROEN 95Chapter 11
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III - DIAGRAM Of ESTABLISHMENT
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IV - NOMENCLATURE
BH28 -BB00 - BSI1 - PSF1 - C001 - CA00 - M000 - MC11 - MC13 -MC14 - MassesMC30 -MC31 - MC32 - MM01 -0004 - Compound1115 - Sensor reference rolls1208 - Volumetric governor1220 - Driving sensor temperature water1221 - Thermister gas oil1253 - Electromagnetic sluice gate all or nothing EGR1261 - Sensor position pedals accelerating1276 - Heater gas oil1310 - Flowmeter air1313 - Sensor engine speed1320 - Calculator engine control1321 - Sensor of high fuel pressure1331 - Injector rolls n° 11332 - Injector rolls n° 21333 - Injector rolls n° 31334 - Injector rolls n° 41620 - Velocity pick-up (*) vehicle7306 - Driver safety RVV (clutch)11 -- - Function lighting pre-heating15 -- - Function cooling43 -- - Function information containing hydrocarbon65 -- - Function air-bag72 -- - Function computer of edge73 -- - Function RVV80 -- - Function air-conditioning refrigeration
(*) According to version
98CITROEN Chapter 11
Case of fuse cockpitBatteryIntelligent case of constraintPlatinize fusible constraint box (case constraint engine) Connector diagnosisContactor theft protection device
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