13B-175
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
* diff: differential
DF315
PRESENT
OR
STOREDPARTICLE FILTER DIFF* PRESSURE SENSOR
CO: Open circuit
CC.1: Open circuit or short-circuit on + 12 volts
C0.0: Open circuit or short circuit to earth
NOTESConditions for applying fault finding procedures to stored faults:
The fault is declared present after the engine is started or following a road test.
Special notes:
If the fault is present:
–the level 1 warning light is lit,
–the OBD warning light will come on after three consecutive driving cycles (start
+ 5 seconds + switch off the ignition switched and wait 1 minute),
– the particle filter fault finding procedure is inhibited,
– particle filter regeneration is inhibited.
Priorities when dealing with a number of faults:
– DF315 if it is present.
– DF308 "Particle filter clogged" if DF315 is stored and DF308 is present.
– DF011 Sensor supply voltage no. 1 if it is present or stored.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
EDC16C36_V48_DF315/EDC16C36_V50_DF315/EDC16C36_V58_DF315EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58
13B-178
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
* diff: differential
DF316
PRESENT
OR
STOREDPARTICLE FILTER DIFF* PRESSURE
1.DEF: Signal incoherent
2.DEF: Below minimum threshold
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.
Special notes:
If the fault is present:
– the particle filter fault finding procedure is inhibited,
–the Level 1 and OBD warning lights are lit.
Use bornier Ele. 1681 for all operations on the engine management computer
connector.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
Check the condition of the pressure pipes on the differential pressure sensor.
Check that they are sealed and in the correct position.
Replace if necessary.
Check the condition of the connectors on the differential pressure sensor and the injection computer.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
Check the continuity, insulation and the absence of interference resistance on the following connections:
– Connection code3AAQ,
– Connection code3TM,
– Connection code 3TL,
between components 1290 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.
If the fault is still present, contact the Techline.
EDC16C36_V48_DF316/EDC16C36_V50_DF316/EDC16C36_V58_DF316EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 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-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
13B-192
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
DF892
PRESENT
OR
STOREDGROUP 2 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 any operations on the connectors of the engine management
computer.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
EDC16C36_V44_DF892/EDC16C36_V4C_DF892/EDC16C36_V48_DF892/EDC16C36_V50_DF892/EDC16C36_V54_DF892/
EDC16C36_V58_DF892EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-195
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
* diff: differential
DF953
PRESENT
OR
STOREDPARTICLE FILTER ABSENT
NOTESConditions for applying fault finding procedures to stored faults:
The fault is declared present after the engine is started or following a road test.
Special notes:
If the fault is present:
– particle filter regeneration is inhibited,
– blue/white smoke and black particles coming from the exhaust,
the OBD warning light will illuminate after three consecutive driving cycles (start + 5
seconds, switch off the ignition and wait 40 seconds).
Priorities when dealing with a number of faults:
– DF315 Particle filter diff.* pressure sensor if present or stored
IMPORTANT
In the long term, this fault may lead to premature wear and a greater risk of
turbocharger failure.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
EDC16C36_V48_DF953/EDC16C36_V50_DF953/EDC16C36_V58_DF953EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58