13B-86
MR-372-J84-13B200$288.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF054
CONTINUED 1
CC.1
4.DEF
5.DEF
NOTESNone
Check the turbocharging solenoid valve connections.
Check the injection computer connections.
Repair if necessary.
Measure the resistance of the turbocharging solenoid valve between connections 3MG and 3FB (Mégane II and
Laguna II) or 3FB1 (Scénic II).
Replace the turbocharging solenoid valve if the resistance measured is not 14.7 Ω < X < 16.1 Ω at 20°C.
Check the continuity and insulation from + 12 V of connection 3MG between components 120 and 1475.
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.
If the fault is still present, replace the turbocharging solenoid valve.
CC.0
CO
3.DEF
NOTESNone
Check the turbocharging solenoid valve connections.
Check the injection computer connections.
Repair if necessary.
Measure the resistance of the turbocharging solenoid valve between connections 3MG and 3FB (Mégane II and
Laguna II) or 3FB1 (Scénic II).
Replace the turbocharging solenoid valve if the resistance displayed is not 14.7 Ω < X < 16.1 Ω at 20°C.
Check the continuity and insulation from earth of the following connections:
– connection code 3MG between components 120 and 1475,
– connection code 3FB (Mégane II and Laguna II) or 3FB1 (Scénic II) between components 1475 and 1337
(Mégane II and Scénic II) or 983 (Laguna II).
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.
If the fault is still present, replace the turbocharging solenoid valve.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
13B-87
MR-372-J84-13B200$288.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
*OCR: Opening Cyclic RatioDF054
CONTINUED 2
1.DEF
2.DEF
NOTESNone
Check the turbocharging solenoid valve connections.
Check the injection computer connections.
Repair if necessary.
Measure the resistance of the turbocharging solenoid valve between connections 3MG and 3FB (Mégane II and
Laguna II) or 3FB1 (Scénic II).
Replace the turbocharging solenoid valve if the resistance displayed is not 14.7 Ω < X < 16.1 Ω at 20°C.
Check the continuity and insulation from earth of the following connections:
connection code 3MG between components 120 and 1475,
connection code 3FB (Mégane II and Laguna II) or 3FB1 (Scénic II) between components 1475 and 1337
(Mégane II and Scénic II) or 983 (Laguna II).
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.
If the fault is still present, check that the computer output stage is working correctly.
With the turbocharging solenoid valve connected:
→Or using a voltmeter:
Connect the negative terminal of the voltmeter to connection 3MG of the solenoid valve and the positive terminal
to connection 3FB (Mégane II and Laguna II) or 3FB1 (Scénic II).
Clear any solenoid valve faults and run command AC004 Turbocharger solenoid valve.
The voltmeter should display ten cycles of two successive voltages: ~2.5V (OCR* of 20%) then ~8.75V (OCR*
of 70%).
→ Or with an oscilloscope (range 5 V/division and time base 1 ms/division): Connect the negative terminal of
the oscilloscope to the battery earth and the positive terminal to 3FB of the solenoid valve.
Clear any solenoid valve faults and run command AC004 Turbocharging solenoid valve.
The oscilloscope should display a square wave signal with an amplitude of 12.5 V (~ battery voltage) at a
frequency of 140 Hz (with an OCR* changing successively from ~ 20 to ~ 70%).
if the measurement is correct, replace the solenoid valve.
if the measurement does not show any control or continuous voltage, contact the techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
13B-88
MR-372-J84-13B200$288.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF055
PRESENT
OR
STOREDTURBOCHARGING PRESSURE REGULATION CIRCUIT
1.DEF: Pressure too low
2.DEF: Pressure too high
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:
– turbocharging is no longer authorised,
– the EGR function is inhibited,
– the level 1 warning light is illuminated.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors
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_DF055/EDC16_V58_DF055/EDC16_V5C_DF055/EDC16_V18_DF055/EDC16_V1C_DF055/EDC16_V20_DF055
13B-89
MR-372-J84-13B200$288.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF055
CONTINUED 1
1.DEF
NOTESNone
Check the turbocharging pressure sensor connections,
Check the connections of the turbocharging solenoid valve,
Check the injection computer connections.
Repair if necessary.
Check the sealing of the high pressure air circuit:
– disconnected or pierced pipes,
– pressure sensor disconnected or poorly fitted (seal present),
– intercooler pierced (to check the intercooler: with the vehicle stopped, stabilise the engine speed between 3500
and 4000 rpm and check that there are no leaks).
Check the conformity of the turbocharging pressure signal and run test 2Air line at the turbocharger, test 6
Turbocharger control solenoid valve check and test 7 Turbocharger.
Check that the turbocharger and the control circuit are working:
– With the engine stopped, check that the control rod is (in the rest position the control rod is retracted).
– start the engine and check that the control rod disengages and pulls on the turbocharger geometry (when the
engine is stopped, the control rod should return to the rest position).
If the control rod does not move correctly, carry out the following checks:
1. Check the control vacuum pressure:
– Disconnect the solenoid valve inlet hose and connect it to a pressure gauge,
– start the engine and stabilise it at idle speed,
– if the vacuum is not between 700 mbar < X < 900 mbar, check the vacuum circuit from the vacuum pump,
– Stop the engine, reconnect the intake hose and proceed to step 2.
2. Solenoid valve control check:
– Disconnect the solenoid valve outlet hoses,
– start the engine and stabilise it at idle speed,
– place your hand on the solenoid valve and block the outlet connection with your thumb,
– if there is no detectable vibration of the solenoid valve, check that the computer output is operating correctly
(see DF054 Turbocharging solenoid valve control circuit 1.DEF).
3. Solenoid valve operation check:
– Connect the pressure gauge to the solenoid valve outlet union,
– start the engine and stabilise it at idle speed,
– if the vacuum is not 700 mbar < X < 900 mbar, replace the solenoid valve.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
13B-90
MR-372-J84-13B200$288.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF055
CONTINUED 2
2.DEF
NOTESPriority when dealing with a number of faults:
Deal with fault DF004 Turbocharging pressure sensor
circuit first if it is present or stored.
Check the turbocharging pressure sensor connections,
Check the connections of the turbocharging solenoid valve,
Check the injection computer connections.
Repair if necessary.
Check the conformity of the turbocharging pressure signal (refer to the interpretation of parameter PR041
Turbocharging pressure).
Make sure the turbocharging pressure relief solenoid valve is not jammed open:
– With the engine switched off, disconnect the inlet and outlet hoses from the solenoid valve.
– connect a vacuum pump to the inlet union and apply a vacuum pressure.
– If the vacuum pressure is not maintained, replace the solenoid valve.
Check that the turbocharger control rod has not seized:
– With the engine stopped, check that the turbocharger control rod is in the rest position (the control rod
engaged),
– apply a vacuum of 700 mbar < X < 900 mbar to the hose connected to the turbocharger control diaphragm,
– if the diaphragm retains the vacuum, check the movement and setting of the turbocharger control rod (see MR
364 (Mégane II), MR 370 (Scénic II), MR 395 (Laguna II), Mechanical, 12B, Turbocharging).
If the control rod is seized, replace the turbocharger.
If the fault is still present, run test 2 Air line at the turbocharger, test 6 Turbocharger control solenoid valve
check and test 7 Turbocharger.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
13B-132
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
DF308
CONTINUED 2
Step 2:
Check whether one or more faults, in the list below, are present or stored.
If at least one exists:
–Deal with the present and stored faults,
– replace the particle filter,
–run command SC036 Reinitialise programming (see Interpretation of commands) and select "After
particle filter replacement".
– Clear fault DF308, if Present or Stored
IMPORTANT: DF308 must be cleared within the 3 minutes following the last power latch.
– 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 no faults are present or stored, move on to step 3.
List of faults:
– DF001 Coolant temperature sensor circuit.
– DF003 Atmospheric pressure sensor circuit.
– DF011 Sensor supply voltage no. 1.
– DF013 Sensor supply voltage no. 3.
– DF038 Computer.
– DF039 Inlet air temperature sensor circuit.
– DF055 Turbocharging pressure regulation circuit, 1.DEF Pressure too low.
– DF056 Air flowmeter circuit.
– DF310 Particle filter upstream temp* sensor.
– DF315 Particle filter diff* pressure sensor.
– DF717 Particle filter upstream pressure.
– DF778 Turbine upstream temperature regulation.
– DF953 Particle filter absent.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
13B-149
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
DF619
PRESENT
OR
STOREDEGR VALVE JAMMED OPEN
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after a road test.
Priorities when dealing with a number of faults:
– DF118 EGR solenoid valve servo-control,
– DF209 EGR valve position sensor circuit,
– DF272 EGR valve control circuit,
if they are present or stored.
Special note:
If the fault is present:
– The EGR and turbocharging functions are inhibited,
– the level 1 warning light is illuminated.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
IMPORTANT
This fault can result in a rapid and significant fouling of the particle filter. If the EGR
valve needs to be replaced to resolve the fault, use command SC036 Reinitialise
programming and select EGR valve to reinitialise the EGR valve offsets (see
Replacement of components).
Check the EGR valve connections.
Check the injection computer connections.
Repair if necessary.
Check the operation of the EGR valve:
– exit fault finding mode in CLIP,
– switch off the vehicle ignition,
– disconnect the EGR valve connector,
– remove the EGR valve.
– Check that there are no particles blocking the movement of the piston.
– Clean the EGR valve, (see Technical Note 3916A Cleaning the EGR valve).
– Refit the EGR valve, run command SC036 Reinitialise programming and select EGR valve to reinitialise the
EGR valve offsets (see Replacement of components).
If the valve is jammed or irrevocably seized, replace the EGR valve. Run command SC036 Reinitialise
programming and select EGR valve to reinitialise the EGR valve offsets (see Replacement of components).
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF619/EDC16_V58_DF619/EDC16_V5C_DF619/EDC16_V18_DF619/EDC16_V1C_DF619/EDC16_V20_DF619
13B-150
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
DF620
PRESENT
OR
STOREDEGR VALVE FOULED
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after a road test.
Priorities when dealing with a number of faults:
– DF118 EGR solenoid valve servo-control,
– DF209 EGR valve position sensor circuit,
– DF272 EGR valve control circuit,
if they are present or stored.
Special note:
If the fault is present:
– the EGR function is inhibited,
– particle filter regeneration is inhibited,
– turbocharging is inhibited,
– the level 1 warning light is lit.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
IMPORTANT
This fault can result in a rapid and significant fouling of the particle filter. If the EGR
valve needs to be replaced to resolve the fault, use command SC036 Reinitialise
programming and select EGR valve to reinitialise the EGR valve offsets (see
Replacement of components).
Check the EGR valve connections.
Check the injection computer connections.
Repair if necessary.
Check the operation of the EGR valve:
– exit fault finding mode in CLIP,
– switch off the vehicle ignition,
– disconnect the EGR valve connector,
– remove the EGR valve.
– Check that there are no particles blocking the movement of the piston.
– Clean the EGR valve, (see Technical Note 3916A Cleaning the EGR valve).
– Refit the EGR valve, run command SC036 Reinitialise programming and select EGR valve to reinitialise the
EGR valve offsets (see Replacement of components).
If the valve is jammed or irrevocably seized, replace the EGR valve. Run command SC036 Reinitialise
programming and select EGR valve to reinitialise the EGR valve offsets (see Replacement of components).
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF620/EDC16_V58_DF620/EDC16_V5C_DF620/EDC16_V18_DF620/EDC16_V1C_DF620/EDC16_V20_DF620