Page 143 of 236

13B - 143
DIESEL INJECTION
Fault finding - Conformity check13B
V10 MR-372-J84-13B150$470.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
ENGINE COOLING
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
1Coolant
temperaturePR064:Coolant
temperatureShows the engine coolant
temperature in °C
Default value: 119 °CIn the event of a fault,
consult the
interpretation of DF001
Coolant temperature
sensor circuit.
2 Fan assembliesET022:Low speed
fan assembly
requestINACTIVE if air
conditioning not
switched onIf the fan assemblies
are supplied with the
ignition on, the
injection may be in
defect mode.
Carry out a system fault
test and consult the
interpretation of any
faults. ET021:High speed
fan assembly
request
ET014:Fan assembly
1 checkRUNNING if air
conditioning is active
ET015:Fan assembly
2 checkRUNNING if operating
temperature is reached
3 Sensor feed PR084:Coolant
temperature
sensor
voltageidle speed, engine warm
PR084 = 0.54 V
Safe value: 5 VIn the event of a fault,
consult the
interpretation of DF001
Coolant temperature
sensor circuit.
Page 144 of 236

13B - 144
DIESEL INJECTION
Fault finding - Conformity check13B
V10 MR-372-J84-13B150$470.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
IGNITION/PREHEATING
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 supply ET001:+ After
ignition
computer
feedPRESENT If the event of a fault, carry
out fault finding on the
charging circuit
2 Engine speed PR055: Engine
speedIndicates the engine's
speed in rpm
At idling speed
PR055 = 800 rpmIn the event of a fault,
consult the interpretation of
fault DF005 Engine speed
sensor circuit.
3TemperaturePR064: Coolant
temperatureShows the engine coolant
temperature in °C
Default value: 119 °CIn the event of a fault,
consult the interpretation of
DF001 Coolant
temperature sensor
circuit.
PR059:Inlet air
temperatureIndicates the inlet air
temperature
Default value: 20 °CIn the event of a fault,
consult the interpretation of
fault DF039 Inlet air
temperature sensor
circuit.
4 Preheating ET007:Preheating
unit controlidle speed, engine warm
ET007 = INACTIVEIn the event of a fault,
(ET007 locked in ACTIVE),
consult the interpretation of
fault DF017 Preheating
unit control circuit.
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 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 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
Page 155 of 236

13B-155
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
Note: Status ET022 Low-speed engine fan request and status ET014 Engine fan assembly check 1 change
their status at the same time.ET022
LOW-SPEED FAN REQUEST
NOTESOnly perform the tests if the statuses do not correspond with the system programming
functions.
ACTIVE
The injection computer requests the activation of the low speed GMV when:
– the engine coolant temperature is above 89°C,
– the injection computer has system faults that could lead to the engine overheating,
– the air conditioning is switched on by the driver.
When the high speed fan is supplied:
– status ET022 High-speed engine fan request changes to ACTIVE,
– status ET014 changes to RUNNING.
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 fault which could cause engine overheating is present in the injection system.
– the air conditioning is not switched on by the driver.
IMPORTANT!WARNING
If the UPC does not detect the injection computer frames, the low speed engine
fan 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_ET022/EDC16_V48_ET022/EDC16_V4C_ET022
Page 162 of 236
DIESEL INJECTION
Fault finding - Interpretation of statuses13B
13B-162V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
ET077
IMPACT DETECTED
NOTESOnly perform the tests if the statuses do not correspond with the system programming
functions.
YES
NO
If the vehicle has been involved in an accident, the injection computer receives the
impact signal via the multiplex network and may switch off the ignition. Status ET077 is
at YES.
Switch off the ignition for ten seconds, then switch it back on to enable the engine to start.
Carry out a multiplex network test and deal with any faults.
Clear the injection computer faults, even if no fault is present.
In normal operating conditions, status ET077 is NO when the computer has received no
impact signal.
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
EDC16_V44_ET077/EDC16_V48_ET077/EDC16_V4C_ET077