Page 161 of 431

13B-161
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$103.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
*diff: differential
*temp: temperature
DF308
PRESENT
OR
STOREDCLOGGED PARTICLE FILTER
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,
– the EGR function is inhibited,
– the vehicle performance is reduced,
–the level 1 warning light is lit and a warning message (or light) is displayed on the
instrument panel.
Priorities when dealing with a number of faults:
Deal with the following faults first:
– DF315 Particle filter differential pressure sensor if it is present.
– DF308 if DF315 is stored.
– DF316 Particle filter diff* pressure sensor if it is present or stored.
– DF226 Damper valve circuit if it is present or stored.
– DF272 EGR valve control circuit if it is present or stored.
– DF647 EGR valve position regulation if it is present or stored.
– DF309 Particle filter downstream temperature sensor if it is present or stored.
– DF899 Regeneration temperature threshold exceeded if it is present or stored.
– DF310 Particle filter upstream temperature sensor if it is present or stored.
– DF778 Turbine upstream temperature regulation if it is present or stored.
– DF652 Turbine upstream temperature sensor circuit if it is present or stored.
EDC16C36_V48_DF308/EDC16C36_V50_DF308/EDC16C36_V58_DF308EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58
Page 162 of 431
13B-162
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$103.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF308
CONTINUED
Check that there are no leaks or blockages in the exhaust pipe,
Repair if necessary
Carry out an After-Sales regeneration.
Run command SC017 "Particle filter regeneration" (see Interpretation of commands).
Clear fault DF308 Present or Stored.
Apply TEST 4 Turbocharged air inlet circuit check.
If the fault is still present, contact the Techline.
EDC16 C36
Program No.: 91
Vdiag No.: 48, 58
Page 163 of 431

13B-163
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$103.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
*temp: temperature
DF309
PRESENT
OR
STOREDPARTICLE FILTER DOWNSTREAM TEMP.* SENSOR
CO.1: Open circuit or short circuit to +12 V
CC.0: Short circuit to earth
NOTESConditions for applying fault finding procedures to stored faults:
The fault becomes present if:
– ignition is on (CC.0),
– following a road test, engine warm (CO.1).
IMPORTANT
The particle filter downstream temperature sensor only measures temperatures
greater than 50°C.
Use the Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
CC.0
NOTESNone.
Check the condition of the particle filter downstream 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 code3TG,
– connection code3XU,
between components 120 and 1288.
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 particle filter downstream temperature sensor.
EDC16C36_V48_DF309/EDC16C36_V58_DF309EDC16 C36
Program No.: 91
Vdiag No.: 48, 58
Page 164 of 431

13B-164
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$103.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF309
CONTINUED
CO.1NOTESNone.
Check the condition of the particle filter downstream 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 continuity and insulation from + 12 V of the following connections:
– connection code3TG,
– connection code3XU,
between components 120 and 1288.
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 particle filter downstream temperature sensor.
EDC16 C36
Program No.: 91
Vdiag No.: 48, 58
Page 165 of 431

13B-165
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$103.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF310
PRESENT
OR
STOREDPARTICLE FILTER UPSTREAM TEMP.* SENSOR
CO.1: Open circuit or short circuit to +12 V
CC.0: Short circuit to earth
NOTESConditions for applying fault finding procedures to stored faults:
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:
– particle filter regeneration is inhibited,
–the level 1 warning light is lit,
–the OBD warning light comes on after three consecutive driving cycles (start
+5 seconds, switch off the ignition and wait 1 minute).
IMPORTANT
The particle filter upstream temperature sensor only measures temperatures
above 50°C.
Use the Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
EDC16C36_V48_DF310/EDC16C36_V50_DF310/EDC16C36_V58_DF310EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58
Page 166 of 431

13B-166
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$103.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
*temp: temperature
DF310
CONTINUED 1
CC.0NOTESNone.
Check the condition of the particle filter 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 code3XT,
– connection code3TD,
between components 120 and 1287.
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 wiring of the particle filter downstream temperature sensor, component code 1288, is present (with or without
the sensor being present), check the electrical insulation in relation to + 12 V between the following connections:
•3XU between components 120 and 1288,
•3TG between components 120 and 1288.
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 particle filter upstream temperature sensor.
EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58
Page 167 of 431

13B-167
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$103.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF310
CONTINUED 2
CO.1NOTESNone.
Check the condition of the particle filter 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 continuity and insulation from + 12 V of the following connections:
– connection code3XT,
– connection code3TD,
between components 120 and 1287.
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 particle filter upstream temperature sensor.
EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58
Page 168 of 431

13B-168
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition, wait for the end of the power-latch phase and perform a road
test followed by a check using the diagnostic tool.
V9 MR-372-J84-13B450$104.mif
13B
* diff: differential
*temp: temperature
DF311
PRESENT
OR
STOREDFAILED REGENERATIONS LIMIT EXCEEDED
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 illuminated.
– particle filter regenerations when driving are inhibited.
Priorities when dealing with a number of faults:
Firstly, deal with the following faults:
– DF308 Particle filter clogged if it is present or stored.
– DF315 Particle filter diff.* pressure sensor if it is present or stored.
– DF316 "Particle filter diff* pressure if it is present or stored"
– DF055 Turbocharging pressure regulation circuit if it is present or stored.
– DF309 Particle filter downstream temperature sensor if it is present or stored.
– DF899 Regeneration temperature threshold exceeded if it is present or stored.
– DF310 Particle filter upstream temperature sensor if it is present or stored.
– DF778 Turbine upstream temperature regulation if it is present or stored.
– DF652 Turbine upstream temperature sensor circuit if it is present or stored.
– DF272 EGR valve control circuit if it is present or stored.
– DF647 EGR valve position regulation if it is present or stored.
EDC16C36_V48_DF311/EDC16C36_V58_DF311
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16 C36
Program No.: 91
Vdiag No.: 48, 58