13B-153
MR-372-J84-13B200$360.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF717
PRESENT
OR
STOREDPARTICLE FILTER UPSTREAM PRESSURE
1.DEF: Signal incoherent
NOTESConditions for applying the fault finding procedure to a stored fault:
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 illuminates after three consecutive driving cycles (starting
+ 5 seconds + switch off the ignition and wait 1 minute),
– the particle filter fault finding procedure is inhibited,
– particle filter regeneration is inhibited.
Check the condition of the pressure pipe between the particle filter upstream take-off point and the differential
pressure sensor.
Check that the pipe is not crushed, blocked or pierced.
Check that it is correctly positioned and connected to the differential pressure sensor (see MR 395 (Laguna II),
370 (Scénic II) or 364 (Mégane II), Mechanical, 19B Exhaust, Particle filter pressure sensor: Removal –
Refitting).
Replace the pressure pipe if necessary.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF717/EDC16_V58_DF717/EDC16_V5C_DF717/EDC16_V18_DF717/EDC16_V1C_DF717/EDC16_V20_DF717
13B-155
MR-372-J84-13B200$360.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF778
CONTINUED
Check the turbine upstream temperature sensor connections.
check the engine management computer connections.
If there is a repair procedure (see Technical Note 6015A, Electrical wiring repair, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
Check the continuity, absence of interference resistance and insulation against + 5 V and + 12 V of the
following connections:
– connection code 3ABS,
– connection code 3ABT.
Between components 120 and 1589.
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.
Check the continuity, absence of interference resistance and insulation to earth of connection 3ABS
between components 120 and 1589.
Check for earth on connection 3ABT of the turbine upstream temperature sensor.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Apply TEST 4 Turbocharged air inlet circuit check.
If the fault is still present, warm up the engine until parameter PR064 Coolant temperature = 80°C.
Run the engine at fast idle speed:
PR055 Engine speed = 1500 rpm for 2 minutes.
If PR667 Turbine upstream temperature remains fixed at 200°C, replace the turbine upstream temperature
sensor.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
13B-158
MR-372-J84-13B200$360.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
*diff: differentialDF953
PRESENT
OR
STORED
PARTICLE FILTER ABSENT
NOTESConditions for applying the fault finding procedure to a stored fault:
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 illuminates after three consecutive driving cycles (starting
+ 5 seconds + switch off the ignition and wait 1 minute).
Priorities when dealing with a number of faults:
Firstly, deal with the following faults:
–DF315 Particle filter diff* pressure sensor if it is present or stored.
–DF717 Particle filter upstream pressure if it is present or stored.
Use bornier Elé.1681 for all operations on the engine management computer
connector.
IMPORTANT
In the long term, this fault may lead to premature wear and a greater risk of
turbocharger failure.
Check the condition of the differential pressure sensor connector (see Wiring Diagram Technical Note,
Mégane II, Scénic II or Laguna II, component code 1290).
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Mégane II, Scénic II or Laguna II, component code 120).
If the connector(s) is faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, wiring: Precautions for repair), repair the connector(s); otherwise, replace the wiring.
Check the particle filter is present.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF953/EDC16_V58_DF953/EDC16_V5C_DF953/EDC16_V18_DF953/EDC16_V1C_DF953/EDC16_V20_DF953
13B-160
MR-372-J84-13B200$360.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF1070
PRESENT
OR
STOREDCOLD LOOP
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present with the engine running and a heating and air
conditioning request
Priorities when dealing with a number of faults:
Firstly, deal with the following faults:
–DF049 Refrigerant sensor circuit, if it is present or stored.
When the fault is present or stored, the heating and air conditioning system is inhibited.
Check fuse F22 (10A) of the UPC and the condition of the air conditioning compressor connector.
If the connectors is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Check the air conditioning compressor wiring.
If the wiring is faulty and there is a repair procedure (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Manually check if the compressor is jammed (turn the clutch plate manually to check that there is no point of
resistance). In the event of sticking, replace the air conditioning compressor (see MR 364 (Mégane II) or 370
(Scénic II), Mechanical, Heating and air conditioning system, 62A, Air conditioning, Compressor:
Removal – Refitting).
Top up with refrigerant, check for any leaks and repair if necessary (see MR 364 (Mégane II) or 370 (Scénic II),
Mechanical, Heating and air conditioning system, 62A, Air conditioning, Refrigerant circuit: check,
Refrigerant circuit: Draining – Filling).
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF1070/EDC16_V58_DF1070/EDC16_V5C_DF1070/EDC16_V18_DF1070/EDC16_V1C_DF1070/EDC16_V20_DF1070
13B-165
MR-372-J84-13B200$504.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of statuses
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
ET001
CONTINUED
Sensor electrical conformity
"ABSENT"
NOTESIgnition on
Check the condition and the conformity of the supply fuse F5D (5A) of the Protection and Switching Unit
(Vdiag 18, 1C, 20 only).
Repair if necessary
Check for an earth on connection NT (Laguna II) or N (Mégane II and Scénic II) of component 120.
If the connection is 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 a + 12 V feed on connection AP29 (Laguna II) or AP15 (Mégane II and Scénic II) of the injection
computer.
If there is no voltage, check the continuity and insulation from earth of connection AP29 (Laguna II) or AP15
(Mégane II and Scénic II) between components 120 and 1337 (Vdiag 18, 1C, 20 only) or 597 (Vdiag 50, 58, 5C
only).
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.
PRESENT
NOTESIgnition on
Check that there is no + 12 V feed with the ignition off on connection AP29 (Laguna II) or AP15 (Mégane II and
Scénic II) of component 120.
If the connection is 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 REPAIRCarry out a road test, then check with the diagnostic tool.
13B-168
MR-372-J84-13B200$504.mif
V13
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET007
PRE-POSTHEATING UNIT CONTROL
STATUS DEFINITIONACTIVE, when the heater plugs are activated according to the engine coolant
temperature.
INACTIVE, after the engine has been running for a certain period.
In the event of a fault, consult the interpretation of fault DF017 Preheating unit
control circuit.
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
Conformity check with engine running, engine coolant temperature > 80 °C
"ACTIVE"
Then
"INACTIVE"
After the engine has been running for a certain period, the status changes from ACTIVE
to INACTIVE.
In the event of a fault, consult the interpretation of fault DF017 Preheating unit control
circuit.
Sensor conformity check
ACTIVEWhen the vehicle is started from cold, the injection computer controls the pre-
postheating unit so that the vehicle can be started.
Status ET007 becomes YES a few seconds after the ignition is switched on and during
pre/postheating.
If the vehicle does not start and status ET007 becomes YES, check:
– supply fuse F2 (Scénic II and Mégane II) or FM12 (Laguna II) (70A) for the
preheating unit, located on the power supply fuse board in the engine compartment
connection unit, below the Protection and Switching Unit,
– the resistance of the heater plugs.
Replace any plug with a resistance greater than 2Ω.
If the vehicle starts and status ET007 remains YES during the engine operating phase,
refer to the interpretation of faults:
– DF017 Preheating relay control circuit.
– DF025 Pre-postheating unit diagnostic connection.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16_V50_ET007/EDC16_V58_ET007/EDC16_V5C_ET007/EDC16_V18_ET007/EDC16_V1C_ET007/EDC16-V20_ET007
13B-192
MR-372-J84-13B200$504.mif
V13
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET238
SYNCHRONISATION
STATUS DEFINITIONCompleted: This status indicates that synchronisation has been carried out.
Not completed: This status indicates that synchronisation is not complete.
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
WARNING
Synchronisation is carried out during the engine starting phase. This is established between the camshaft position
sensor and the Top Dead Centre sensor.
Once this synchronisation has been carried out, it enables the computer to identify cylinder no. 1 and to calculate
the precise position of the cylinder's Top Dead Centre.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature
>80 °C
COMPLETED
Synchronisation is carried out during the engine starting phase.
Cylinder no.1 is indicated and the synchronisation will be performed once the engine is
started.
Status ET238 is COMPLETED.
If after several attempts to start the engine, status ET238 remains NOT COMPLETED,
refer to the interpretation of the following faults:
– DF005 Engine speed sensor circuit.
– DF097 Camshaft sensor circuit.
If the engine does not start, consult ALP2 Starting faults (see Fault finding chart).
NOT PERFORMEDWhen the engine is stopped but the ignition switched on, cylinder no. 1 is no longer
indicated.
Status ET238 is NOT PERFORMED: synchronisation between the crankshaft and the
camshaft has not been carried out.
AFTER REPAIRCarry out a road test followed by a check with the diagnostic tool.
EDC16_V50_ET238/EDC16_V58_ET238/EDC16_V5C_ET238/EDC16_V18_ET238/EDC16_V1C_ET238/EDC16_V20_ET238
13B-210
MR-372-J84-13B200$576.mif
V13
13B
DIESEL INJECTION
Fault finding – Parameter summary table
* OCR: Opening cyclic ratioTool parameter Diagnostic tool title
PR002Alternator charge
PR005EGR valve opening setpoint
PR006Rail pressure regulator current
PR007Rail pressure regulator current setpoint
PR008Rail reference pressure
PR009Turbocharging pressure setpoint
PR011Turbocharging solenoid valve position sensor
PR015Engine torque
PR016Alternator flow (Vdiag 50, 58, 5C only)
PR017Fuel flow
PR022EGR valve position feedback loop difference
PR030Accelerator pedal position
PR035Atmospheric pressure
PR037Refrigerant pressure
PR038Rail pressure
PR041Turbocharging pressure
PR043Heating element power authorised
PR045Power requested by thermoplungers
PR047Turbocharging pressure *OCR
PR048Refrigerant pressure regulation valve *OCR
PR051EGR valve position feedback
PR053Engine speed requested by air conditioning
PR055Engine speed
PR058Inlet air temperature (Vdiag 18, 1C and 20 only)
PR059Inlet air temperature (Vdiag 50, 58 and 5C only)
MR-372-J84-13B200$576.mif
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C