Page 145 of 236

13B - 145
DIESEL INJECTION
Fault finding - Conformity check13B
V10 MR-372-J84-13B150$470.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
STARTING
NOTESOnly check conformity after a complete check using the diagnostic tool. The values
shown in this conformity check are given as a guide.
Test conditions: engine at idle speed, coolant temperature at > 80°.
Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
1 Power supplyET001: + After ignition
computer feedPRESENTIf the event of a fault,
carry out fault finding on
the charging circuit
PR071: Computer feed
voltage9 V < X < 16 VIn the event of a fault,
carry out fault finding on
the charging circuit.
PR358: Sensor
reference
voltage3.47 < X < 3.75 V
(Average of the three
sensor feed voltages)In the event of a fault,
consult the interpretation
of faults DF011 Sensor
feed voltage no. 1, DF012
Sensor feed voltage no. 2,
and DF013 Sensor feed
voltage no. 3.
2 Starting ET076:StartingAUTHORISED:
The injection gives
authorisation to start
or
PROHIBITED:
The injection does not
give authorisation to
start.If status ET076 is
PROHIBITED, carry out
fault finding on the entire
multiplex network.
3 Engine operation ET038:EngineAt idling speed
RunningNone
4 Synchronisation ET238: SynchronisationPERFORMEDIn the event of a fault,
consult the interpretation
of status ET238
Page 146 of 236
13B - 146
DIESEL INJECTION
Fault finding - Conformity check13B
V10 MR-372-J84-13B150$470.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
PROTECTION
NOTESOnly check conformity after a complete check using the diagnostic tool. The values
shown in this conformity check are given as a guide.
Test conditions: engine at idle speed, coolant temperature at > 80°.
Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
1Engine
immobiliserET341: Code
programmedYES
or
NOIf status ET341 is stuck at
NO, (See 87B, UCH).
ET003: Engine
immobiliserACTIVE
or
INACTIVEIf status ET003 is stuck at
ACTIVE, (See 87B, UCH).
2 Vehicle impact ET077: Impact
detectedYES
or
NOIn the event of a fault,
consult the interpretation of
fault DF069 Impact signal
detected.
3 Starting ET076: StartingAUTHORISED:
The injection system
authorises starting
or
PROHIBITED:
The injection system
does not authorise
starting.If status ET076 is
PROHIBITED,
(See 87B, UCH).
Page 147 of 236

13B - 147
DIESEL INJECTION
Fault finding - Status summary table13B
V10 MR-372-J84-13B150$517.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4CDIESEL INJECTION
Fault finding - Status summary table
*RCH: Passenger compartment heating resistorTool Status Diagnostic tool title
ET001+ After ignition computer feed
ET003Engine immobiliser
ET004Air conditioning authorisation
ET007Preheating unit control
ET014Check cooling fan 1
ET015Check cooling fan 2
ET021High speed fan assembly request
ET022Low speed fan assembly request
ET035Reverse gear signal
ET038Engine
ET042Cruise control/speed limiter
ET076Starting
ET077Impact detected
ET078Air regulation
ET079Air conditioning present
ET088Compressor actuation request
ET104Injector code use
ET111RCH* number set
ET112RCH* cut-off
ET233Clutch pedal
ET238Synchronisation
ET341Immobiliser code programmed
ET405Clutch pedal switch
ET413Cruise control/speed limiter function
ET415Deactivation of cruise control/speed limiter
ET703Cruise control/speed limiter buttons
ET704Brake switch no. 1
ET705Brake switch no. 2
MR-372-J84-13B150$517.mif
Page 148 of 236

13B-148
DIESEL INJECTION
Fault finding - Interpretation of statuses13B
V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4CDIESEL INJECTION
Fault finding - Interpretation of statuses
ET001
COMPUTER + AFTER IGNITION FEED
NOTESOnly perform the tests if the statuses do not correspond with the system programming
functions.
ABSENT ignition on
Check the condition and conformity of the F5D (5A) supply fuse for the UPC.
Repair if necessary.
Check for the presence of an earth on the following connections:
Injection computer black 32-track connector A, track G4 battery earth
Injection computer black 32-track connector A, track H4 battery earth
Injection computer black 32-track connector A, track H1 battery earth
Repair if necessary.
Check for + 12 V on trackD1 of connector A of the injection computer.
If there is no voltage, check the continuity and insulation against earth of the following
connection:
Injection computer black 32-track connector A, track D1 Track 1 UPC black
connector
Repair if necessary.
PRESENT ignition on
Check that there is not + 12 V with the ignition switched on trackD1 of connector A of
the injection computer.
Repair if necessary.
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
EDC16_V44_ET001/EDC16_V48_ET001/EDC16_V4C_ET001
MR-372-J84-13B150$564.mif
Page 149 of 236
13B-149
DIESEL INJECTION
Fault finding - Interpretation of statuses13B
V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
ET003
ENGINE IMMOBILISER
NOTESOnly perform the tests if the statuses do not correspond with the system programming
functions.
ACTIVE
Refer to the UCH fault finding note (See 87B, UCH).
INACTIVE
Refer to the UCH fault finding note (See 87B, UCH).
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
EDC16_V44_ET003/EDC16_V48_ET003/EDC16_V4C_ET003
Page 150 of 236

DIESEL INJECTION
Fault finding - Interpretation of statuses13B
13B-150V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
ET004
AC AUTHORISED
NOTESOnly perform the tests if the statuses do not correspond with the system programming
functions.
YES
NO
The air conditioning authorisation only changes to YES if:
– the air conditioning request has been made by the driver (air conditioning switch in AC
or AUTO position with minimum ventilation),
– the engine is not under full load,
– the air conditioning system is not faulty.
The status ET004 remains at NO" in the following conditions:
– Vehicle stopped with the ignition on,
– faults present in the air conditioning circuit,
– no air conditioning request made by the driver,
– engine under full load.
If status ET004 remains at NO then the air conditioning should be authorised, check:
– that the air conditioning compressor is activated correctly,
– the air conditioning system feed fuses,
– for gas in the air conditioning circuit,
– the gas pressure value is consistent at idle speed.
If the fault is still present, check the air conditioning computer for faults (See 62A, Air
conditioning).
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
EDC16_V44_ET004/EDC16_V48_ET004/EDC16_V4C_ET004
Page 151 of 236

DIESEL INJECTION
Fault finding - Interpretation of statuses13B
13B-151V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
ET007
PRE-POSTHEATING UNIT CONTROL
NOTESOnly perform the tests if the statuses do not correspond with the system programming
functions.
YES
NO
When the vehicle is started from cold, the injection computer controls the pre/postheating
unit so that the vehicle can be started.
Status ET007 changes to YES a few seconds after the ignition is switched on and during
pre/postheating.
If the vehicle does not start and status ET007 changes to YES, check:
–the F2 (70A) supply fuse on the preheating unit,
– the resistance of the heater plugs.
Replace any plugs with a resistance greater than 2 Ω.
If the vehicle starts and the status ET007 remains YES during the engine functional
stage, refer to the interpretation of faults:
DF017 Preheating relay control circuit.
DF025 Pre-postheating unit diagnostic connection.
After the engine is started and preheating, the injection computer should stop the pre/
postheating unit operating.
Status ET007 Should change to NO.
In the event that the vehicle does not start and status ET007 remains at NO, check the
continuity and the absence of interference resistance of the following connections:
Injection computer grey 32-track connector C, track A4 Track 9 preheating
unit
Injection computer grey 32-track connector C, track E2 Track 8 preheating
unit
Repair if necessary.
If the fault is still present, refer to the interpretation of faults:
DF017 Preheating relay control circuit.
DF025 Pre-postheating unit diagnostic connection.
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
EDC16_V44_ET007/EDC16_V48_ET007/EDC16_V4C_ET007
Page 152 of 236

13B-152
DIESEL INJECTION
Fault finding - Interpretation of statuses13B
V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
ET014
FAN ASSEMBLY 1 CHECK
NOTESOnly perform the tests if the statuses do not correspond with the system programming
functions.
Note: Status ET022 Low-speed engine fan request and status ET014 Engine fan assembly check 1 change
their status at the same time.
RUNNING
The low-speed fan assembly is supplied in three scenarios:
– the engine coolant temperature is above 89°C,
– the air conditioning is operating,
– the injection computer has system faults that could lead to the engine overheating.
When the low-speed fan assembly is supplied:
– status ET014 changes to RUNNING
– status ET022 low-speed engine fan request changes to ACTIVE.
In the event that the low-speed engine fan does not work, refer to the UPC fault finding note.
STOPPED
The low-speed fan assembly stops when:
– the engine coolant temperature is below 89°C,
– no air conditioning request made by the driver.
IMPORTANT!WARNING
If the UPC does not detect the injection computer frames, the low-speed engine
fan assembly is supplied until the battery is completely discharged.
In the event that the low-speed engine fan assembly is defective, the high-speed
engine fan assembly will then be activated.
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
EDC16_V44_ET014/EDC16_V48_ET014/EDC16_V4C_ET014