2009 RENAULT TWINGO RS fuel cut of

17B-11V7 MR-413-X44-17B000$030.mif
PETROL INJECTION
Fault finding – System operation17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
Engine immobiliser
The SIM 32 computer manages an engine immobiliser program:
–The Verlog 4 type immobiliser function is managed by the UCH computer and the engine management computer.
Before any customer request, the engine management computer and UCH exchange authentication frames via the
multiplex network to determine whether or not to start the engine.
After more than five consecutive failed authentication attempts, the engine management computer goes into
protection (antiscanning) mode and no longer tries to authenticate the UCH. It only leaves this mode when the
following sequence of operations is carried out:
–the ignition is left on for at least 60 seconds,
–the signal is cut off,
–the injection computer self-supply cuts out when it should (the time varies according to engine temperature).
After this, only one authentication attempt is allowed. If this fails again, repeat the sequence of operations described
above.
If the engine management computer still fails to unlock, contact the Techline.
Impact detected
If an impacthas been stored by the injection computer (ET077 Impactdetected), switch off the ignition for10 seconds,
thenswitch it back on so that the e ngine can b e started. Then clear the faults using commandRZ0 01 Fault memory.
Fuel supply
Fuel is supplied by the fuel pump. It is controlled each time the ignition is switched on, for 1 second, to provide a
certain pressure level in the circuit, and thereby achieve correct engine starting, particularly if the vehicle has not
been used for a long time. When the engine is running, the fuel pump relay is always controlled.
Injection
The injectors are controlled according to several modes. The engine is started in "semi-full group" mode (injectors
1 and 4, then injectors 2 and 3 simultaneously). This is to ensure correct engine starting whether or not it is correctly
phased, then it enters sequential mode.
It can sometimes, though rarely, happen that the engine starts when incorrectly phased. Then, after it has changed
to sequential injection mode and as long as the cylinder 1 recognition program has not taken place, the injectors are
offset by two cylinders: injection occurs in 4-2-1-3 order instead of the expected 1-3-4-2.
Injection timing is continuously calculated. It can be zero in the event of cut-off whilst decelerating or overrevving for
example.
Engine phasing
SIM 32 D4F 764 injection systems are equipped with a delayed continuous inlet camshaft dephaser.
The injection receives the position of the camshaft dephaser given by the camshaft sensor signal.
This position does not recognise whether the camshaft dephaser is in defect mode or not.
There are two types of defect mode associated with the various types of camshaft dephaser faults:

17B-23V7 MR-413-X44-17B000$060.mif
PETROL INJECTION
Fault finding – Features17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
Engine immobiliser
The SIM 32 computer manages an engine immobiliser program:
–The Verlog 4 type immobiliser function is managed by the UCH computer and the engine management computer.
Before any customer request, the engine management computer and UCH exchange authentication frames via the
multiplex network to determine whether or not to start the engine.
After more than five consecutive failed authentication attempts, the engine management computer goes into
protection (antiscanning) mode and no longer tries to authenticate the UCH. The engine management computer only
exits this mode if the following sequence of operations is respected:
–the ignition is left on for at least 60 seconds,
–the signal is cut off,
–the injection computer self-feed deactivates when it should (the time varies according to engine coolant
temperature.
Following this sequence of operations, a single authentication attempt is authorised. If this fails again, repeat the
sequence of operations described above.
If the engine management computer still fails to unlock, contact the Techline.
Impact detected
If an impact has been stored by the injection computer (ET077 Impact detected), switch off the ignition for
10 seconds, then switch it back on so that the engine can be started. Then clear the faults using command RZ001
Fault memory.
Fuel supply
Fuel is supplied by the fuel pump. It is controlled each time the ignition is switched on, for 1 second, to provide a
certain pressure level in the circuit, and thereby achieve correct engine starting, particularly if the vehicle has not
been used for a long time. When the engine is running, the fuel pump relay is always controlled.
Injection
The injectors are controlled according to several modes. In particular, the engine is started in semi-full group mode
(injectors 1 and 4, then injectors 2 and 3 simultaneously), to ensure a correct start whether or not it is correctly
phased, then it enters sequential mode.
It can sometimes, though rarely, happen that the engine starts when incorrectly phased.
Then, after it has changed to sequential injection mode and as long as the cylinder 1 recognition program has not
taken place, the injectors are offset by two cylinders: injection occurs in the order 4-2-1-3 instead of the expected
order 1-3-4-2.
Injection timing is continuously calculated. It can be zero in the event of cut-off whilst decelerating or overrevving for
example.

17B-39V7 MR-413-X44-17B000$110.mif
17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
2. PROGRAMMING
Flywheel target programming
(To be carried out when replacing or removing the TDC sensor).
The coolant temperature must be over 35˚C.
–Carry out an initial deceleration with injection cut-off (feet off the brake, accelerator and clutch pedals) between
3500 and 3000 rpm, in 3rd gear for at least 5 seconds for manual gearboxes.
–Decelerate a second time with injection cut-off (feet off the brake, accelerator and clutch pedals) between 2400 and
2000 rpm, in 3rd gear for at least 5 seconds for manual gearboxes.
Check the programming with ET089 Programming flywheel target: Performed.
Programming the throttle end stops
After replacement of the computer or the motorised throttle valve, with the ignition on, wait 30 seconds so that the
computer can program the Upper and Lower limits and then switch off the ignition and wait 30 seconds for the end of
the "Power Latch", so that the computer can store the programmed limits. Check the programming with ET051
Programming throttle stops: Performed.
Programming the alcohol level (only for vehicles running on Ethanol or E85 fuel)
Fuel recognition is carried out by observing the drift of the richness controller.
This can only be performed if the mixture regulation is looped (ET300 Mixture regulation).
Programming procedure:
–start the engine,
–wait for the engine coolant temperature to reach 75˚C and then check using the parameter PR064 "Coolant
temperature",
–run the engine at 1500 rpm for a period of at least 5 minutes,
–check that the programming has been carried out using status ET671 Alcohol level programming and
parameter PR743 Estimated alcohol level in tank,
–the programming is saved when the ignition is switched off. Note:
After replacement of the throttle valve run the command RZ005 Programming to erase any recorded
programming.
Note:
When the injection computer has not recognised the fuel composition, operation is faulty.
PETROL INJECTION
Fault finding – Programming

17B-69V7 MR-413-X44-17B000$131.mif
PETROL INJECTION
Fault finding – Interpretation of faults17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
DF059
PRESENT
OR
STOREDCOMBUSTION MISFIRES ON CYLINDER 1
1.DEF: Destructive misfiring
2.DEF: Polluting misfiring
3.DEF: EOBD
NOTESPriorities when dealing with a number of faults:
Firstly, deal with the following faults:
–ignition:
–DF361 Ignition coil circuit 1-4,
–DF362 Ignition coil circuit 2-3
–fuel supply circuit:
–DF026 Cylinder 1 injector circuit
–DF027 Cylinder 2 injector circuit,
–DF028 Cylinder 3 injector circuit
–DF029 Cylinder 4 injector circuit,
–DF085 Fuel pump relay control circuit,
–engine flywheel signal faults:
–DF154 Flywheel signal sensor circuit,
–DF457 Engine flywheel target.
Conditions for applying the fault finding procedure to stored faults:
The fault is considered present when the engine is running.
Special notes:
1.DEF: As soon as the fault is detected, the injection is cut for the faulty cylinder(s) to
limit the rise in temperature inside the catalytic converter. The OBD warning light
flashes for as long as the fault is present.
2.DEF and 3.DEF: The OBD warning light is permanently illuminated.
Misfiring on
cylinder 1 only
The fault is probably due to a component that can only affect this cylinder:
–check the valve clearance,
–check the cylinder 1 injector,
–check the condition and the conformity of the spark plug for cylinder 1,
–measure the compression of cylinder 1.
SIM32_V44_DF059/SIM32_V4C_DF059/SIM32_V50_DF059/SIM32_V54_DF059
AFTER REPAIREnsure that all the faults have been dealt with.
Clear the stored faults. Do not clear the programming.
To check that the system has been properly repaired:
- there must be no further electrical faults,
- programming has been carried out,
- the engine should be warm (minimum temperature 75˚C)
Run the engine at idle speed with all electrical consumers drawing power for 15 minutes.

17B-72V7 MR-413-X44-17B000$131.mif
PETROL INJECTION
Fault finding – Interpretation of faults17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
DF060
PRESENT
OR
STOREDMISFIRING ON CYLINDER 2
1.DEF: Destructive misfiring
2.DEF: Polluting misfiring
3.DEF: EOBD
NOTESPriorities when dealing with a number of faults:
Firstly, deal with the following faults:
–ignition:
–DF361 Ignition coil circuit 1-4,
–DF362 Ignition coil circuit 2-3
–fuel supply circuit:
–DF026 Cylinder 1 injector circuit
–DF027 Cylinder 2 injector circuit,
–DF028 Cylinder 3 injector circuit
–DF029 Cylinder 4 injector circuit,
–DF085 Fuel pump relay control circuit,
–engine flywheel signal faults:
–DF154 Flywheel signal sensor circuit,
–DF457 Engine flywheel target.
Conditions for applying the fault finding procedure to stored faults.
The fault is declared present with the engine running.
Special notes:
1.DEF: As soon as the fault is detected, the injection is cut for the faulty cylinder(s) to
limit the rise in temperature inside the catalytic converter. The OBD warning light
flashes for as long as the fault is present.
2.DEF and 3.DEF: The OBD warning light is permanently illuminated.
Misfiring on
cylinder 1 only
The fault is probably due to a component that can only affect this cylinder:
–check the valve clearance,
–check the cylinder 1 injector,
–check the condition and the conformity of the spark plug for cylinder 1,
–measure the compression of cylinder 1.
SIM32_V44_DF060/SIM32_V4C_DF060/SIM32_V50_DF060/SIM32_V54_DF060
AFTER REPAIREnsure that all the faults have been dealt with.
Clear the stored faults. Do not clear the programming.
To check that the system has been properly repaired:
- there must be no further electrical faults,
- programming has been carried out,
- the engine should be warm (minimum temperature 75˚C)
Run the engine at idle speed with all electrical consumers drawing power for 15 minutes.

17B-75V7 MR-413-X44-17B000$131.mif
PETROL INJECTION
Fault finding – Interpretation of faults17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
DF061
PRESENT
OR
STOREDMISFIRING ON CYLINDER 3
1.DEF: Destructive misfiring
2.DEF: Polluting misfiring
3.DEF: EOBD
NOTESPriorities when dealing with a number of faults:
Firstly, deal with the following faults:
–ignition:
–DF361 Ignition coil circuit 1-4,
–DF362 Ignition coil circuit 2-3
–fuel supply circuit:
–DF026 Cylinder 1 injector circuit
–DF027 Cylinder 2 injector circuit,
–DF028 Cylinder 3 injector circuit
–DF029 Cylinder 4 injector circuit,
–DF085 Fuel pump relay control circuit,
–engine flywheel signal faults:
–DF154 Flywheel signal sensor circuit,
–DF457 Engine flywheel target.
Conditions for applying the fault finding procedure to stored faults.
The fault is declared present with the engine running.
Special notes
1.DEF: As soon as the fault is detected, the injection is cut for the faulty cylinder(s) to
limit the rise in temperature inside the catalytic converter. The OBD warning light flashes
for as long as the fault is present.
2.DEF and 3.DEF: The OBD warning light is permanently illuminated.
Misfiring on
cylinder 3 only
The fault is probably due to a component that can only affect this cylinder:
–check the valve clearance,
–check the cylinder 3 injector,
–check the condition and the conformity of the spark plug for cylinder 3,
–measure the compression of cylinder 3.
SIM32_V44_DF061/SIM32_V4C_DF061/SIM32_V50_DF061/SIM32_V54_DF061
AFTER REPAIREnsure that all the faults have been dealt with.
Clear the stored faults. Do not clear the programming.
To check that the system has been properly repaired:
- there must be no further electrical faults,
- programming has been carried out,
- the engine should be warm (minimum temperature 75˚C)
Run the engine at idle speed with all electrical consumers drawing power for 15 minutes.

17B-78V7 MR-413-X44-17B000$131.mif
PETROL INJECTION
Fault finding – Interpretation of faults17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
DF062
PRESENT
OR
STOREDMISFIRING ON CYLINDER 4
1.DEF: Destructive misfiring
2.DEF: Polluting misfiring
3.DEF: EOBD
NOTESPriorities when dealing with a number of faults:
Firstly, deal with the following faults:
–ignition:
–DF361 Ignition coil circuit 1-4,
–DF362 Ignition coil circuit 2-3
–fuel supply circuit:
–DF026 Cylinder 1 injector circuit
–DF027 Cylinder 2 injector circuit,
–DF028 Cylinder 3 injector circuit
–DF029 Cylinder 4 injector circuit,
–DF085 Fuel pump relay control circuit,
–engine flywheel signal faults:
–DF154 Flywheel signal sensor circuit,
–DF457 Engine flywheel target.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present with the engine running.
Special notes:
1.DEF: As soon as the fault is detected, the injection is cut for the faulty cylinder(s) to
limit the rise in temperature inside the catalytic converter. The OBD warning light
flashes for as long as the fault is present.
2.DEF and 3.DEF: The OBD warning light is permanently illuminated.
Misfiring on
cylinder 4 only
The fault is probably due to a component that can only affect this cylinder:
–check the valve clearance,
–check the cylinder 4 injector,
–check the condition and conformity of the cylinder 4 spark plug,
–measure the compression of cylinder 4.
SIM32_V44_DF062/SIM32_V4C_DF062/SIM32_V50_DF062/SIM32_V54_DF062
AFTER REPAIREnsure that all the faults have been dealt with.
Clear the stored faults. Do not clear the programming.
To check that the system has been properly repaired:
- there must be no further electrical faults,
- programming has been carried out,
- the engine should be warm (minimum temperature 75˚C)
Run the engine at idle speed with all electrical consumers drawing power for 15 minutes.

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.