ECU Citroen C5 2000 (DC/DE) / 1.G User Guide

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INJECTION
Component (diagr.) Supplier Reference Observations
88 way connector. Flash eprom type sequential
Diesel injection ECU1BOSCHEDC 15C2 injection (reprogrammable eprom). Installed in the
ECU compartment.
Engine speed sensor2ELECTRIFIL
Camshaft position sensor3ELECTRIFIL Air gap value : 1,2 mm.
Coolant temperature sensor7ELECTRIFIL 962859028A Fixed on the coolant housing.
Accelerator pedal sensor8PHILIPS
Vehicle speed sensor9EATON On the gearbox.
Brake pedal switch10aOpen at rest.
10bClosed at rest.
Clutch pedal switch11
Atmospheric pressure sensor12BOSCHIntegrated in the injection ECU.
Battery
13FULMEN058426 – 12 Volt
400 ampsUnder the bonnet.
Injection double relay14BITRON 240 10915 way black connector. Installed in the ECU
compartment.
FIRST3 way black connector. Installed in the front RH
Inertia switch30INERTIA Type 505wheelarch, fixed on the suspension mounting.
SWITCHManual rearming in the event of the cut-out system
being activated.
FEATURES OF BOSCH HDi DIRECT INJECTION SYSTEM
Electrical circuit

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INJECTION
Component (diagr.) Supplier Reference Observations
Diagnostic warning lamp31Incorporated in the dashboard instrument panel.
Central diagnostic socket32In the passenger compartment.
Electronic immobiliser33
Consumption information 34Incorporated in the dashboard instrument panel.
Rev counter35Incorporated in the dashboard instrument panel.
Preheater warning lamp36Incorporated in the dashboard instrument panel.
Pre-postheating unit37NAGARES 960411P
CARTIER 735068
Preheater plugs38CHAMPION CH170
BOSCH0250202032
Cruise control switch39
Automatic gearbox ECU
40
Air conditioning compressor41SANDEN SD7V16
Additional heating by heating
42 a
elements in boiler42 b
Additional heating control
relay43
FEATURES OF BOSCH HDi DIRECT INJECTION SYSTEM
Electrical circuit (continued)

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INJECTION
FEATURES OF BOSCH HDi DIRECT INJECTION SYSTEM
Component (diagr.) Supplier Reference Observations
88 way connector. Flash eprom type sequential
Ignition injection ECU1BOSCHEDC 15C2 injection (reprogrammable eprom). Installed in the
ECU compartment.
FIRST3 way black connector. Installed in the front RH
Inertia switch34INERTIA Type 505wheelarch, fixed on the suspension mounting.
SWITCHManual rearming in the event of the cut-out system
being activated.
Injection double relay15BITRON 240 10915 way black connector. Installed in the ECU
compartment.
Battery14VA R TAL2 – 12 volts
400 ampsEngine compartment..
Atmospheric pressure sensor13BOSCHIncorporated in the injection ECU.
Central diagnostic socket36In the passenger compartment.
Diagnostic warning lamp35Incorporated in the dashboard instrument panel.
Vehicle speed sensor10EATON On the gearbox.
Preheater warning lamp40Incorporated in the dashboard instrument panel.
Rev counter39Incorporated in the dashboard instrument panel.
Consumption information 38Incorporated in the dashboard instrument panel.
Engine speed sensor2ELECTRIFIL
Camshaft position sensor3ELECTRIFIL Airgap value : 1,2 mm.
Electrical circuit

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INJECTION
FEATURES OF BOSCH HDi DIRECT INJECTION SYSTEM
159
Component (diagr.) Supplier Reference Observations
Preheater unit41NAGARES 960411P
CARTIER 735068
Preheater plugs42CHAMPION CH170
BOSCH0250202032
Coolant temperature sensor8ELECTRIFIL Fixed on the coolant outlet housing
Electronic immobiliser37
Accelerator pedal sensor9PHILIPS
Brake pedal switch 11 aOpen at rest
11 bClosed at rest
Clutch pedal switch12
Additional heating control relay
47
Additional heating46 a
Boiler heater elements46 b
Air conditioning compressor45
Automatic gearbox ECU44
Cruise control switch43

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INJECTION
FEATURES OF BOSCH HDi DIRECT INJECTION SYSTEM
Component (diagr.) Supplier Reference Observations
88 way connector. Flash eprom type sequential
Ignition injection ECU19BOSCHEDC 15C2 injection (reprogrammable eprom). Installed in the
electronic ECUs compartment.
Injection double relay52BITRON 240 10915 way black connector. Installed in the electronic
ECUs compartment.
Battery51VA R TAL2 – 12 volts
Engine compartment.
400 amps
Atmospheric pressure sensor18BOSCHIncorporated in the injection ECU.
Central diagnostic socket50In the passenger compartment.
Diagnostic warning lamp27Incorporated in the dashboard instrument panel.
Vehicle speed sensor53EATON On the gearbox.
Preheater warning lamp26Incorporated in the dashboard instrument panel.
Rev counter24Incorporated in the dashboard instrument panel.
Trip computer23Incorporated in the dashboard instrument panel.
Engine speed sensor60ELECTRIFIL
Camshaft position sensor61ELECTRIFIL Airgap value : 1,2 mm.
Preheater unit57NAGARES 960411P
CARTIER 51299011
Preheater plug62CHAMPION CH170
BERU 0100226344
Electrical circuit

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INJECTION
FEATURES OF BOSCH HDi DIRECT INJECTION SYSTEM
Electrical circuit (continued)
Component (diagr.) Supplier Reference Observations
Coolant temperature sensor46ELECTRIFIL 962859028A Fixed on the coolant outlet housing
Accelerator pedal sensor54
Brake pedal switch36PHILIPS
56
Clutch pedal switch55
Additional heating control
relay1
Additional heating2 aOpen at rest
Boiler elements2 bClosed at rest
Air conditioning compressor 30
Automatic gearbox ECU22
Cruise control switch34
Heated rear screen20
ESP ECU21
«Service» warning lamp25
Cooling fan29
Fuel cap warning lamp28
Coolant temperature alert warning lamp31
Coolant temperature indicator32

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INJECTION
FEATURES OF BOSCH HDi DIRECT INJECTION SYSTEM
Particle filter circuit
Component (diagr.) Supplier Reference Observations
WIMETAL
Particle filter7
TR PSA F002
Catalyser downstream temperature sensor8
Differential pressure sensor9KAVLICO
Catalyser upstream temperature sensor10
Additive ECU38MARWAL
Additive reservoir39
Additive minimum level sensor40
Additive injection pump41MARWAL
Cap (too full)47
Additive injector43MARWAL
Safety valve48
Inlet air heater butterfly72

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RECOMMENDATIONS - PRECAUTIONS (AL 4 AUTOMATIC GEARBOX)
Engines : 6FZ - RFN - RHZ
Procedure to be followed prior to carrying out repairs on AL4 autoactive gearbox
CLUTCH
GEARBOX
DRIVESHAFTS
If a gearbox malfunction occurs, there are two possible configurations
depending on the seriousness of the fault :
- Gearbox in back-up mode with a replacement programme of
(the fault values are taken in substitution).
- Gearbox in back-up mode with an emergency programme
(3rd hydraulic).
WARNING : In the emergency programme, an impact is felt when
changing P/R, N/RandN/D.
Réception client.
Discuss with the customer, to find out all the malfunction symptoms..
Oil quality – Oil level.
If the gearbox has suffered a serious fault resulting in a malfunction or
the destruction of a clutch, the oil will overheat and become
contaminated with impurities : the oil is said to be «burnt».
This is characterised by a black colour and the presence of an
unpleasant smell.
ESSENTIAL : The gearbox must be replaced.Oil quality.
See corresponding operation.
An excessive oil level can result in the following consequences :
- Excessive heating of the oil.
- Oil leaks.
An insufficent level causes the destruction of the gearbox.
Top up the level of oil in the gearbox (if necessary).
Check using a diagnostic tool.
Read the fault codes (engine and gearbox).
Absence de codes défauts.
Carry out parameter measures, actuator tests and a road test.
Presence of fault codes.
Carry out the necessary repairs.
Delete the fault codes.
Carry out a road test to check the repair and, if need be, modify the
gearbox ECU parameters (this is essential after an initialisation of the ECU).

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CLUTCH
GEARBOX
DRIVESHAFTS
RECOMMENDATIONS - PRECAUTIONS (AL 4 and 4 HP 20 AUTOMATIC GEARBOXES)
Engines : 6FZ - RFN - RHZ - XFX - 4HX
Procedure prior to carrying out repairs (continued)
When the ECU detects an erroneous or non-existent value
on input or output :
- It writes the fault in memory.
- For each associated context, it writes the context of the oldest fault
in memory.
- It initiates a back-up mode strategy.
There are two types of back-up modes :
- The ECU makes replacement values available (relating to comfort,
gear selection quality, loss of functions).
- Access to emergency programme (only 3rd ratio and reverse are
available)
NOTE : 4 HP 20 : A snatching may be felt when changing :P/R - N/R - N/D.Reading the fault codes.
Read the fault codes.
No fault codes present :
Carry out a measure of parameters.
Anomalies present :
- YES : Carry out the necessary repairs.
- NO : Read the fault codes – engine ECU.
- Carry out a road test.
Following an initialisation of the ECU, for a certain period of time there
may be an inconsistent gear selection quality(while ECU parameters
are adapted to the gearbox).
To achieve a consistent standard, it is necessary to carry out a road test
taking in frequent gear changes (auto-adaptive laws).

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RECOMMENDATIONS - PRECAUTIONS (AL 4 and 4 HP 20 AUTOMATIC GEARBOXES)
Engines : 6FZ - RFN - RHZ - XFX - 4HX
CLUTCH
GEARBOX
DRIVESHAFTS
ECU : Downloading, Configuration, Initialisation (Pedal).
Downloading. ( AL 4 and 4 HP 20 )
Updating the gearbox ECU by downloading :
- Follow the procedure using the diagnostic equipment.
The operation of downloading is used to update the automatic gearbox ECU or to adapt it to evolutions of the engine ECU.
After downloading, carry out the following :
- Note down the value in the oil usage counter present in the automatic gearbox ECU.
- Delete the fault codes.
- Again note down the value in the oil usage counter and compare it with the value previously read.
- Pedal initialisation (AL 4)
- Configuration (if needed) (AL 4)Following the diagnostic tool procedure.
- A reinitialisation of the autoadaptives (AL4 - 4 HP 20).
- A road test (AL 4 - 4 HP 20).
IMPERATIVE : Every update of the automatic gearbox ECU must
be accompanied by an update of the engine ECU.