Page 97 of 348

17B-97V7 MR-413-X44-17B000$132.mif
PETROL INJECTION
Fault finding – Interpretation of faults17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
DF084
PRESENT
OR
STOREDACTUATOR RELAY CONTROL CIRCUITCO: Open circuit
CC.0: Short circuit to earth
CC.1: Short circuit to + 12 V
1.DEF: Abnormal voltage
2.DEF: EOBD
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present with the engine running.
Special notes:
This relay supplies the following actuators: the injectors, the throttle valve control, the
oxygen sensor heaters, the fuel vapour absorber bleed solenoid valve and connection
3FB of the injection computer.
CO/CC.1: No actuator supply: same effect as running out of fuel. The vehicle stalls and
will not start again.
CC.0: The actuators are supplied constantly: high electrical consumption when
stationary.
Intermittent CO: Intermittent relay cut-off: bucking when driving.
Use the Wiring Diagrams Technical Note for NEW TWINGO, E33, CLIO III, or
MODUS.
Check the condition of the engine management computer connector (component code 120).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
For NEW TWINGO or E33:
Check the condition of the injection locking relay connector (component code 238).
If the connectors are faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Use the universal bornier to check the insulation and continuity of the following connections:
●3AA between components 238 and 120,
●3FB between components 238 and 193, 194, 195, 196, 1076, 242, 887, 371.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
SIM32_V44_DF084/SIM32_V4C_DF084/SIM32_V50_DF084/SIM32_V54_DF084
AFTER REPAIRFollow the instructions to confirm repair:
- If the fault is present, continue to deal with the fault.
- If the fault is stored, ignore it.
Deal with any other faults.
Clear the stored faults.
Page 98 of 348

17B-98V7 MR-413-X44-17B000$132.mif
PETROL INJECTION
Fault finding – Interpretation of faults17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
DF084
CONTINUED
With the ignition on, if the + 12 V is still not present on the downstream oxygen sensor connector, there is a fault
in the engine fuse and relay box.
Run fault finding on the engine fuse and relay box to check the continuity of the following connections:
●BP17 between components 120 and 597,
●BP17 between components 1033 and 597.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, check the battery and run fault finding on the charging circuit (see Technical Note 6014A,
Checking the charging circuit).
For CLIO III or MODUS:
Check the condition of the Protection and Switching Unit (see Wiring Diagram Technical Note, CLIO III or
MODUS, component code 1337).
If the connectors are faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Use the universal bornier to check the insulation and continuity of the following connections:
●3AA between components 1337 and 120,
If the connection is faulty and if there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, there is a fault in the Protection and Switching Unit (the actuator relay is in the Protection
and Switching Unit and cannot be dismantled).
Run fault finding on the UPC, component code 1337 (see 87G, Engine compartment connection unit).
If the fault is still present, contact the Techline.
AFTER REPAIRFollow the instructions to confirm repair:
- If the fault is present, continue to deal with the fault.
- If the fault is stored, ignore it.
Deal with any other faults.
Clear the stored faults.
Page 99 of 348

17B-99V7 MR-413-X44-17B000$132.mif
PETROL INJECTION
Fault finding – Interpretation of faults17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
DF085
PRESENT
OR
STOREDFUEL PUMP RELAY CONTROL CIRCUITCO: Open circuit
CC.0: Short circuit to earth
CC.1: Short circuit to + 12 V
1.DEF: EOBD
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present with the ignition on or the engine running, or during
command AC015 Fuel pump relay.
Special notes:
CO/CC.1: The effect of the fault is the same as running out of fuel. The vehicle stalls
and cannot be restarted.
CC.0: There is danger of fire in the event of petrol leaking during an accident.
Intermittent CO: Risk of intermittent ignition cut-off and draining the battery.
Use the Wiring Diagrams Technical Note for NEW TWINGO, E33, CLIO III,
or MODUS.
Check the condition of the engine management computer connector (component code 120).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
For NEW TWINGO or E33:
Check the condition of the fuel pump relay (component code 236).
If the connectors are faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Use the "universal bornier" to check the insulation and continuity of the following connection:
●3AC between components 236 and 120,
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check for an earth during activation of command AC015 Fuel pump relay.
SIM32_V44_DF085/SIM32_V4C_DF085/SIM32_V50_DF085/SIM32_V54_DF085
AFTER REPAIRFollow the instructions to confirm repair:
- If the fault is present, continue to deal with the fault.
- If the fault is stored, ignore it.
Deal with any other faults.
Clear the stored faults.
Page 100 of 348

17B-100V7 MR-413-X44-17B000$132.mif
PETROL INJECTION
Fault finding – Interpretation of faults17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
DF085
CONTINUED
With the ignition on, if the + 12 V is still not present on the fuel pump relay connector, there is a fault in the engine
fuse and relay box.
Run fault finding on the engine fuse and relay box to check the continuity of the following connection:
●BP17 between components 120 and 597,
●BP17 between components 1033 and 597.
If the connection is faulty and if there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, check the battery and run fault finding on the charging circuit (see Technical Note 6014A,
Checking the charging circuit).
For CLIO III or MODUS:
Check the condition of the Protection and Switching Unit (see Wiring Diagram Technical Note, CLIO III or
MODUS, component code 1337).
If the connectors are faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Use the "universal bornier" to check the insulation and continuity of the following connection:
●3AC between components 1337 and 120.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check for an earth during activation of command AC015 Fuel pump relay.
If the fault is still present, there is a fault in the Protection and Switching Unit (the fuel pump relay is in the Protection
and Switching Unit and cannot be dismantled).
Run fault finding on the UPC, component code 1337 (see 87G, Engine compartment connection unit).
If the fault is still present, contact the Techline.
AFTER REPAIRFollow the instructions to confirm repair:
- If the fault is present, continue to deal with the fault.
- If the fault is stored, ignore it.
Deal with any other faults.
Clear the stored faults.
Page 101 of 348

17B-101V7 MR-413-X44-17B000$132.mif
PETROL INJECTION
Fault finding – Interpretation of faults17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
DF089
PRESENT
OR
STOREDINLET MANIFOLD PRESSURE SENSOR CIRCUIT
1.DEF: Signal incoherent
2.DEF: Abnormal voltage
3.DEF: EOBD
NOTESConditions for applying the fault finding procedure to stored faults:
1.DEF: The fault is declared present with the engine running after a few seconds.
2.DEF: The fault is declared present with the engine running.
Special notes:
Minimum idle speed of 900 rpm.
The injection goes into defect mode 5: the ESP and the cruise control - speed limiter
are deactivated. The vehicle stalls under idle speed. The level 1 and OBD fault
warning lights are lit.
Use the Wiring Diagrams Technical Note for NEW TWINGO, E33, CLIO III,
or MODUS.
Check the condition of the manifold pressure sensor and its connections (component code 147).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Measure the voltage of the manifold pressure sensor between connections 3FG and 3F.
If the voltage of the manifold pressure sensor is not between:
●4.75 V < X < 5.25 V with the engine stopped, replace the sensor.
Check the condition of the engine management computer connector (component code 120).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Use the universal bornier to check the insulation and continuity of the following connections:
●3LG between components 147 and 120,
●3F between components 147 and 120,
●3CK between components 147 and 120.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
SIM32_V44_DF089/SIM32_V4C_DF089/SIM32_V50_DF089/SIM32_V54_DF089
AFTER REPAIRFollow the instructions to confirm repair:
- If the fault is present, continue to deal with the fault.
- If the fault is stored, ignore it.
Deal with any other faults.
Clear the stored faults.
Page 102 of 348

17B-102V7 MR-413-X44-17B000$132.mif
PETROL INJECTION
Fault finding – Interpretation of faults17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
DF089
CONTINUED
If the fault is still present, carry out the following checks:
The inlet line must be perfectly sealed, from the throttle valve to the cylinder head.
Check:
–the condition of the air filter,
–that the air inlet circuit is not blocked,
–the sealing between the throttle valve and inlet manifold,
–the manifold pressure sensor sealing,
–the fuel vapour absorber bleed, which must not be jammed open,
–the fuel vapour absorber bleed system sealing,
–the brake servo system sealing,
–the cylinder head oil vapour recovery system sealing,
–the sealing between the inlet manifold and cylinder head,
–the exhaust pipe sealing between the cylinder head and catalytic converter.
Repair if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRFollow the instructions to confirm repair:
- If the fault is present, continue to deal with the fault.
- If the fault is stored, ignore it.
Deal with any other faults.
Clear the stored faults.
Page 103 of 348

17B-103V7 MR-413-X44-17B000$132.mif
PETROL INJECTION
Fault finding – Interpretation of faults17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
DF091
PRESENT
OR
STOREDVEHICLE SPEED SIGNAL
1.DEF: Missing or invalid multiplex signals (fault with computer issuing the signal or
with multiplex line connection)
2.DEF: EOBD
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present when the ignition is switched on or with the engine running.
Run a multiplex network test (see 88B, Multiplex).
If the fault is still present, carry out fault finding on the ABS computer (see 38C, Anti-lock braking system).
Check the condition of the engine management computer connector (component code 120).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
If the fault is still present, contact the Techline.
SIM32_V44_DF091/SIM32_V4C_DF091/SIM32_V50_DF091/SIM32_V54_DF091
AFTER REPAIRFollow the instructions to confirm repair:
- If the fault is present, continue to deal with the fault.
- If the fault is stored, ignore it.
Deal with any other faults.
Clear the stored faults.
Page 104 of 348

17B-104V7 MR-413-X44-17B000$132.mif
PETROL INJECTION
Fault finding – Interpretation of faults17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
DF092
PRESENT
OR
STOREDUPSTREAM OXYGEN SENSOR CIRCUITCO: Open circuit
CC.0: Short circuit to earth
CC.1: Short circuit to +12 V
1.DEF: Component in bad condition
2.DEF: EOBD
NOTESPriorities when dealing with a number of faults:
Deal with the faults DF084 Actuator relay control circuit and DF046 Battery voltage
if they are present or stored.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present when the ignition is switched on or with the engine
running.
Use the Wiring Diagrams Technical Note for NEW TWINGO, E33, CLIO III,
or MODUS.
Check the condition of the connector of the upstream oxygen sensor computer (component code 887) and the
engine management computer (component code 120).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Use the universal bornier to check the insulation and continuity of the following connections:
●3GH between components 887 and 120,
●3GK between components 887 and 120.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
SIM32_V44_DF092/SIM32_V4C_DF092/SIM32_V50_DF092/SIM32_V54_DF092
AFTER REPAIRFollow the instructions to confirm repair:
- If the fault is present, continue to deal with the fault.
- If the fault is stored, ignore it.
Deal with any other faults.
Clear the stored faults.