13B-179
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition until the end of the power-latch phase, and carry out a road test
followed by a check using the diagnostic tool.
V9 MR-372-J84-13B450$104.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF502
PRESENT
OR
STOREDCRUISE CONTROL OR SPEED LIMITER BUTTON
1.DEF: Cruise control/Speed limiter on/off button inconsistency
NOTESConditions for applying the fault finding procedure to a stored fault:
If the fault is declared present after:
– a road test with activation of the cruise control/speed limiter function,
– the engine is started.
Special notes:
If the fault is present, the cruise control/speed limiter is switched off.
Use bornier Elé. 1681 for any operations on the injection computer connectors.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
Check the condition of the connector of the start/stop button for the cruise control/speed limiter (see Wiring
Diagram Technical Note, Mégane II ph2, Scénic II ph2, Component code 1081).
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Mégane II ph2, Scénic II ph2, component code 120).
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
With the button released, check the insulation between the following connections:
– Connection code 3FX of component 1081.
– Connection code AP10 of component 1081.
– Connection code 3PD of component 1081.
– Connection code AP10 of component 1081.
Check the continuity between connections 3FX and AP10 of component 1081 in the cruise control position.
Check the continuity between connections 3PD and AP10 of component 1081 in the speed limiter position.
Check the continuity and absence of interference resistance on the following connections:
– Connection code 3FX between components 1081 and 120.
– Connection code 3PD between components 1081 and 120.
Check for + 12 V on the connector of the cruise control/speed limiter button.
– Connection code AP10 of component 1081.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair
), repair the wiring, otherwise replace it.
If the fault is still present, replace the start/stop button of the cruise control/speed limiter.
EDC16C36_V44_DF502/EDC16C36_V4C_DF502/EDC16C36_V48_DF502/EDC16C36_V50_DF502/EDC16C36_V54_DF502/
EDC16C36_V58_DF502EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-180
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition until the end of the power-latch phase, and carry out a road test
followed by a check using the diagnostic tool.
V9 MR-372-J84-13B450$104.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF530
PRESENT
OR
STOREDEGR ADAPTIVES
1.DEF: Offset invalid
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after:
– the ignition is switched on.
– the engine is started,
– a road test.
Special notes:
If the fault is present the EGR function is disabled.
Use bornier Ele. 1681 for all operations on the engine management computer
connector.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
1.DEF
NOTESNone.
Check the condition of the connector of the EGR valve (see Wiring Diagram Technical Note, Mégane II ph2,
Scénic II ph2, Code organe1460).
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Mégane II ph2, Scénic II ph2, component code 120).
If the connector(s) is/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.
Run command SC036 Reinitialise the programming and select EGR valve to reinitialise the EGR valve offsets.
(see Interpretation of commands).
If the fault is still present, contact the Techline.
EDC16C36_V44_DF530/EDC16C36_V4C_DF530/EDC16C36_V48_DF530/EDC16C36_V50_DF530/EDC16C36_V54_DF530/
EDC16C36_V58_DF530EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-181
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition until the end of the power-latch phase, and carry out a road test
followed by a check using the diagnostic tool.
V9 MR-372-J84-13B450$104.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF643
PRESENT
OR
STOREDRAIL PRESSURE REGULATOR CIRCUITCO: Open circuit
CC.0: Short circuit to earth
CC.1: Short circuit to + 12 V
1.DEF: Internal electronic fault
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault reappears after:
– the ignition is switched on,
– the regulator is actuated by command AC011 Rail pressure regulator.
Special notes:
If the fault is present:
– the engine stops,
–the level 2 warning light is lit.
Use bornier Elé. 1681 for all operations on the engine management computer
connectors.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
Check the condition of the pressure regulator connector (see Wiring Diagram Technical Note, Mégane II ph2,
Scénic II ph2, Component code 1105).
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Mégane II ph2, Scénic II ph2, component code 120).
If the connector or 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.
Check the low pressure circuit.
Repair if necessary.
EDC16C36_V44_DF643/EDC16C36_V4C_DF643/EDC16C36_V48_DF643/EDC16C36_V50_DF643/EDC16C36_V54_DF643/
EDC16C36_V58_DF643EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-183
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition until the end of the power-latch phase, and carry out a road test
followed by a check using the diagnostic tool.
V9 MR-372-J84-13B450$104.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF647
PRESENT
OR
STOREDEGR VALVE POSITION REGULATION1.DEF: Inconsistent EGR 1 offset
2.DEF: Offset too high: valve clogged, stuck open or abnormal
3.DEF: Inconsistent EGR 3 offset
4.DEF: Above maximum threshold
5.DEF: Valve jammed closed
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after:
– the engine is started,
– a road test.
Special notes:
If the fault is present:
–the level 1 warning light is illuminated for 1.DEF, 3.DEF and 5.DEF,
–the European On Board Diagnostic warning light is illuminated for 2.DEF and
4.DEF,
– the EGR function and turbocharging are inhibited by the engine management
computer,
– engine torque is limited.
Use bornier Ele. 1681 for all operations on the engine management computer
connector.
If faults DF647 and DF038 Computer are displayed at the same time, deal with DF038
Computer first. Then check that the EGR valve is open during idling to make sure that
the programming has not been lost. If the valve does not open, carry out the
programming phase.
Priorities when dealing with a number of faults:
– DF209 EGR valve position sensor circuit,
– DF046 Battery voltage,
– DF012 Sensor supply voltage no. 2,
– DF272 EGR valve control circuit,
if they are present or stored.
For EGR valves with a flat connector, it is not possible to check the sensor resistance.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
EDC16C36_V44_DF647/EDC16C36_V4C_DF647/EDC16C36_V48_DF647/EDC16C36_V50_DF647/EDC16C36_V54_DF647/
EDC16C36_V58_DF647EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-184
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition until the end of the power-latch phase, and carry out a road test
followed by a check using the diagnostic tool.
V9 MR-372-J84-13B450$104.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF647
CONTINUED
Check the condition of the connector of the EGR valve (see Wiring Diagram Technical Note, Mégane II ph2,
Scénic II ph2, Component code 1460).
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Mégane II ph2, Scénic II ph2, component code 120).
If the connector(s) is/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.
Check for continuity and absence of interference resistance of the following connections:
– Connection code 3GC between components 1460 and 120.
– Connection code 3JM between components 1460 and 120.
– Connection code 3EL between components 1460 and 120.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it
EGR valve with a square connector:
Measure the resistance of the EGR valve between the following connections:
– Connection code 3JM of component 1460.
– Connection code 3GC of component 1460.
EGR valve with a flat connector:
Replace the EGR valve.
Replace the valve if the resistance is not between: 3.9 kΩ
reinitialise the EGR valve offsets (see Replacement of components).
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-185
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition until the end of the power-latch phase, and carry out a road test
followed by a check using the diagnostic tool.
V9 MR-372-J84-13B450$104.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF652
PRESENT
OR
STOREDTURBINE UPSTREAM TEMPERATURE SENSOR CIRCUIT
CC.O: Short circuit to earth
CO.1: Open circuit or short-circuit on +12 V.
NOTESConditions for applying fault finding procedures to stored faults:
The fault becomes present with the ignition on (CC.0) or after a road test, with the
engine warm (CO.1).
Special notes:
If the fault is present:
– particle filter regeneration is inhibited,
– the vehicle performance is reduced,
– temperature regulation before the particle filter is inhibited.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
CC.0
NOTESNone.
Check the condition of the turbine upstream temperature sensor connector.
Check the condition of the engine management computer connector.
If the connector or 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.
Check the insulation from earth of the following connections:
– connection code 3ABS,
– connection code3ABT,
between components 120 and 1589.
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, replace the turbine upstream temperature sensor.
EDC16C36_V48_DF652/EDC16C36_V50_DF652/EDC16C36_V58_DF652EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58
13B-187
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition until the end of the power-latch phase, and carry out a road test
followed by a check using the diagnostic tool.
V9 MR-372-J84-13B450$104.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF778
PRESENT
OR
STOREDTURBINE UPSTREAM TEMPERATURE REGULATION
1.DEF: Positive loop deviation
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault becomes present after starting the engine.
Priorities when dealing with a number of faults:
Deal with faults DF652 Turbine upstream temperature sensor circuit and DF226
Damper valve circuit first, if they are present or stored.
Special notes:
If the fault is present:
–The level 1 warning light is illuminated.
– A loss of engine performance will be perceived.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
EDC16C36_V48_DF778/EDC16C36_V50_DF778/EDC16C36_V58_DF778EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58
13B-190
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition until the end of the power-latch phase, and carry out a road test
followed by a check using the diagnostic tool.
V9 MR-372-J84-13B450$104.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF891
PRESENT
OR
STOREDGROUP 1 INJECTORS FEED
1.DEF: Faulty connections
2.DEF: Short-circuit on earth or short-circuit on +12 V
NOTESConditions for applying the fault finding procedure to a stored fault:
If the fault becomes present after:
– the ignition is switched on,
– the engine is started.
Priority when dealing with a number of faults:
Deal with faults DF026 Cylinder 1 injector control circuit, DF027 Cylinder 2
injector control circuit, DF028 Cylinder 3 injector control circuit and DF029
Cylinder 4 injector control circuit first, if they are present or stored.
Special notes:
If the fault is present:
–the level 2 injection warning light is illuminated,
– the engine stops.
Use bornier Elé. 1681 for all operations on the engine management computer
connectors.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
EDC16C36_V44_DF891/EDC16C36_V4C_DF891/EDC16C36_V48_DF891/EDC16C36_V50_DF891/EDC16C36_V54_DF891/
EDC16C36_V58_DF891EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58