lock RENAULT TWINGO RS 2009 2.G Electrical Equipment - Petrol Injection Workshop Manual

17B-6V7 MR-413-X44-17B000$010.mif
PETROL INJECTION
Fault finding – Introduction17B
SIM 32 Injection
Program no.: D3
Vdiag No.: 44, 4C, 50
and 54
4. FAULT FINDING PROCEDURE (CONTINUED)
Wiring check
Fault finding problems
Disconnecting the connectors and/or manipulating the wiring may temporarily remove the cause of a fault.
Electrical measurements of voltage, resistance and insulation are generally correct, especially if the fault is not
present when the analysis is made (stored fault).
Visual inspection
Look for damage under the bonnet and in the passenger compartment.
Carefully check the fuses, insulators and wiring harness routing.
Look for signs of oxidation.
Physical inspection
While manipulating the wiring, use the diagnostic tool to note any change in fault status from stored to present.
Make sure that the connectors are properly locked.
Apply light pressure to the connectors.
Twist the wiring harness.
If there is a change in status, try to locate the source of the fault.
Inspection of each component
Disconnect the connectors and check the appearance of the clips and tabs, as well as the crimping (no crimping
on the insulating section).
Make sure that the clips and tabs are properly locked in the sockets.
Check that no clips or tabs have been dislodged during connection.
Check the clip contact pressure using an appropriate model of tab.
Resistance check
Check the continuity of entire lines, then section by section.
Look for a short circuit to earth, to + 12 V or with another wire.
If a fault is detected, repair or replace the wiring harness.

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-52V7 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
DF026
CONTINUED 1
Check, with the ignition switched on, that there is + 12V on the connection 3FB of the connector for the cylinder 1
injector.
If there is no + 12V:
–Disconnect the battery.
For NEW TWINGO or E33:
–Disconnect the injection locking relay connector, component code 238.
–Check the condition of the injection locking relay connector, component code 238.
For Clio III and MODUS:
–Disconnect the white connector, reference MN, from the Protection and Switching Unit (UPC).
–Check the condition of the Protection and Switching Unit connector (component code 1337).
If the connector is faulty and if there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector, otherwise change the wiring.
Use the "Universal bornier" to check the continuity of the following connections:
●3FB between components 193 and 238 (for NEW TWINGO or E33),
●3FB between the components 193 and 1337 (for CLIO III or MODUS).
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.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by a check with
the diagnostic tool.

17B-53V7 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
DF026
CONTINUED 2
For NEW TWINGO or E33:
Reconnect the injection locking relay connector and reconnect the battery.
If there is still no + 12V present on the connector for injector cylinder 1 with the ignition on, then there is a fault on
the engine fuse and relay box.
Carry out a fault finding procedure 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 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 and MODUS:
Reconnect the Protection and Switching Unit connector and reconnect the battery.
With the ignition on, if the + 12V is still not present on the cylinder 1 injector connector, there is a fault in the
Protection and Switching Unit (UPC).
Run fault finding on the UPC, component code 1337 (see 87G, Engine Compartment Connection Unit).
Check the condition of the connector for the engine management computer (see Wiring Diagram Technical Note
for NEW TWINGO, E33, CLIO III or MODUS, 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 connection:
●3CR between the components 193 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.
Measure the resistance of the cylinder 1 injector:
If the resistance of the cylinder 1 injector is not between:
11.4
Ω < X < 12.6 Ω at 20 ˚C, replace the injector.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by a check with
the diagnostic tool.

17B-55V7 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
DF027
CONTINUED 1
Check, with the ignition switched on, that there is + 12V on the connection 3FB of the connector for the cylinder 2
injector.
If there is no + 12 V:
–Disconnect the battery.
For NEW TWINGO or E33:
–Disconnect the injection locking relay connector, component code 238.
–Check the condition of the injection locking relay connector, component code 238.
For Clio III and MODUS:
Disconnect the white connector, reference MN, from the Protection and Switching Unit (UPC).
Check the condition of the Protection and Switching Unit connector (component code 1337).
If the connector or connectors are faulty and if there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the connector, otherwise change the wiring.
Use the "Universal bornier" to check the continuity of the following connections:
●3FB between components 194 and 238 (for NEW TWINGO or E33),
●3FB between the components 194 and 1337 (for CLIO III or MODUS).
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.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by a check with
the diagnostic tool.

17B-56V7 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
DF027
CONTINUED 2
For NEW TWINGO:
Reconnect the injection locking relay connector and reconnect the battery.
If there is still no + 12V present on the cylinder 2 injector connector with the ignition on, then there is a fault on the
engine fuse and relay box.
Carry out a fault finding procedure 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 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 and MODUS:
Reconnect the Protection and Switching Unit connector and reconnect the battery.
With the ignition on, if the + 12V is still not present on the cylinder 2 injector connector, there is a fault with the
Protection and Switching Unit (UPC).
Run fault finding on the UPC, component code 1337 (see 87G, Engine Compartment Connection Unit).
Check the condition of the connector for the engine management computer (see Wiring Diagram Technical Note
for NEW TWINGO, E33, CLIO III or MODUS, 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.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by a check with
the diagnostic tool.

17B-59V7 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
DF028
CONTINUED 1
Check, with the ignition switched on, that there is + 12V on the connection 3FB of the connector for the cylinder 3
injector.
If there is no + 12V:
–Disconnect the battery.
For NEW TWINGO or E33:
Disconnect the injection locking relay connector, component code 238.
Check the condition of the injection locking relay connector, component code 238.
For Clio III and MODUS:
–Disconnect the white connector, reference MN, from the Protection and Switching Unit (UPC).
–Check the condition of the Protection and Switching Unit connector (component code 1337).
If the connector or connectors are faulty and if there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the connector, otherwise change the wiring.
Use the "Universal bornier" to check the continuity of the following connections:
●3FB between components 195 and 238 (for NEW TWINGO or E33),
●3FB between the components 195 and 1337 (for CLIO III or MODUS).
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.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by a check with
the diagnostic tool.

17B-60V7 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
DF028
CONTINUED 2
For NEW TWINGO or E33:
Reconnect the injection locking relay connector and reconnect the battery.
If there is still no + 12V present on the connector for injector cylinder 3 with the ignition on, then there is a fault on
the engine fuse and relay box.
Carry out a fault finding procedure 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 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 and MODUS:
Reconnect the Protection and Switching Unit connector and reconnect the battery.
With the ignition on, if + 12V is still not present on the cylinder 3 injector connector, there is a fault in the Protection
and Switching Unit (UPC).
Run fault finding on the UPC, component code 1337 (see 87G, Engine Compartment Connection Unit).
Check the condition of the connector for the engine management computer (see Wiring Diagram Technical Note
for NEW TWINGO, E33, CLIO III or MODUS, 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 connection:
●3CT between the components 195 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.
Measure the resistance of the cylinder 3 injector:
If the resistance of the cylinder 3 injector is not between:
11.4
Ω < X < 12.6 Ω at 20 ˚C, replace the injector.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by a check with
the diagnostic tool.

17B-62V7 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
DF029
CONTINUED 1
Check, with the ignition switched on, that there is + 12V on the connection 3FB of the connector for the cylinder 4
injector.
If there is no + 12 V:
–Disconnect the battery.
For NEW TWINGO or E33:
–Disconnect the injection locking relay connector, component code 238.
–Check the condition of the injection locking relay connector, component code 238.
For Clio III and MODUS:
–Disconnect the white connector, reference MN, from the Protection and Switching Unit (UPC).
–Check the condition of the Protection and Switching Unit connector (component code 1337).
If the connector or connectors are faulty and if there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the connector, otherwise change the wiring.
Use the "Universal bornier" to check the continuity of the following connections:
●3FB between components 196 and 238 (for NEW TWINGO or E33),
●3FB between the components 196 and 1337 (for CLIO III or MODUS).
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.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait 1 minute and carry out a road test followed by a check with
the diagnostic tool.