Page 152 of 365

13B-152
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
DF652
PRESENT
OR
STORED
TURBINE UPSTREAM TEMPERATURE SENSOR CIRCUIT
CO: Open circuit
CC.0: Short circuit to earth
CC.1 : Short circuit to + 12 V
CO.1: Open circuit or short circuit to + 12 V
1.DEF: Signal outside upper limit
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault becomes present if:
– ignition is on (CC.0),
– following a road test, engine warm (CO.1).
Special notes:
If the fault is present:
– the EGR function is inhibited,
– particle filter regeneration is inhibited,
– the vehicle performance is reduced,
– the level 1 warning light is illuminated.
Priorities when dealing with a number of faults:
DF011 Sensor voltage supply no. 1
IMPORTANT
The turbine upstream temperature sensor only measures temperatures above
200°C.
Check the condition of the turbine upstream temperature sensor connector (see Wiring Diagram Technical
Note, Mégane II, Scénic II or Laguna II, component code 1589).
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 one of 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 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.
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 for earth on connection 3ABT of the turbine upstream temperature sensor
If the fault is still present, warm up the engine until 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.
EDC16_V50_DF652/EDC16_V58_DF652/EDC16_V5C_DF652/EDC16_V18_DF652/EDC16_V1C_DF652/EDC16_V20_DF652
Page 153 of 365

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
Page 154 of 365
13B-154
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
PRESENT
OR
STOREDTURBINE UPSTREAM TEMPERATURE REGULATION
1.DEF: Measured temperature too high
2.DEF: Parameter at maximum limit
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault becomes present if:
– the engine is started with a speed greater than 1750 rpm and a fuel flow greater
than 30 mg/st,,
– a road test.
Special notes:
If the fault is present:
– particle filter regeneration is inhibited,
– the vehicle performance is reduced,
–the level 1 warning light is lit.
IMPORTANT
This fault can result in a rapid and significant fouling of the particle filter.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF778/EDC16_V58_DF778/EDC16_V5C_DF778/EDC16_V18_DF778/EDC16_V1C_DF778/EDC16_V20_DF778
Page 156 of 365

13B-156
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
* DRG: during
* REGEN: regenerationDF890
PRESENT
OR
STORED
MOVEMENT DRG* PARTICLE FILTER REGEN.*
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault becomes present during an After-Sales regeneration carried out using the
diagnostic tool at a speed above zero.
Special notes:
If the fault is present, the particle filter regeneration in progress is interrupted.
IMPORTANT
The fault is present because the vehicle has been driven while the After-Sales regeneration was in
progress.
The vehicle must remain stationary throughout regeneration.
DO NOT DRIVE THE VEHICLE.
CHECK THAT THE VEHICLE IS CORRECTLY IMMOBILISED.
– switch off the ignition and wait for the diagnostic tool message:
“Loss of dialogue with the computer, check the tool connection and the computer supply”,
– switch on the ignition,
– establish dialogue with the injection computer,
– Check that there are no leaks or blockages in the exhaust pipe,
– Repair if necessary
– carry out another After-Sales regeneration,
– Run command SC017 Particle filter regeneration and follow the procedure (see Interpretation of
commands).
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF890/EDC16_V58_DF890/EDC16_V5C_DF890/EDC16_V18_DF890/EDC16_V1C_DF890/EDC16_V20_DF890
Page 157 of 365

13B-157
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
DF899
PRESENT
OR
STOREDREGENERATION TEMPERATURE LIMIT EXCEEDED
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault occurs during After-Sales regeneration using the diagnostic tool when the
particle filter upstream temperature is above 700°C.
Special notes:
If the fault is present, the particle filter regeneration in progress is interrupted.
IMPORTANT
The fault is present because the particle filter has reached an abnormally high temperature while After-
Sales regeneration is being carried out.
The vehicle's particle filter upstream temperature must not exceed 700°C during the whole regeneration
process.
– Replace the particle filter,
– run command SC036 Reinitialise programming (see Interpretation of commands) and select After particle
filter replacement.
– Check the weight of soot: PR383 Weight of soot in the particle filter.
– If PR383
≥ 1 g. Apply the procedure for test 8 Manual clearing of the soot weight.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF899/EDC16_V58_DF899/EDC16_V5C_DF899/EDC16_V18_DF899/EDC16_V1C_DF899/EDC16_V20_DF899
Page 158 of 365

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
Page 159 of 365

13B-159
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
DF953
CONTINUED
If the filter is present,
Visually inspect the particle filter by placing the vehicle on a lift:
– not damaged (no abnormal welds, if necessary compare it with another vehicle fitted with particle filter),
– if After-Sales sleeves are present, due to work being carried out previously, check that the particle filter's
contents were not emptied out when it was removed.
If the particle filter is not working correctly or is absent:
– Replacing the particle filter,
– run command SC036 Reinitialise programming and select After particle filter replacement (see
Interpretation of commands).
– Check the weight of soot: PR383 Weight of soot in the particle filter.
– If PR383
≥ 1 g. Apply the procedure for test 8 Manual clearing of the soot weight.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
Page 201 of 365
13B-201
MR-372-J84-13B200$540.mif
V13
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET651
CONTINUED
STATUS 11, 22
Allow the engine to heat up until this cut-off disappears.
STATUS 18Check that the regeneration of the particle filter in progress has completely finished.
STATUS 20Allow the engine to cool until this cut-off disappears.
STATUS 21Too low atmospheric pressure, the EGR valve is disabled.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.