13B-83
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 RatioDF053
CONTINUED 3
Check the continuity and absence of interference resistance of the following connections:
– connection code 3HI between components 120 and 1105,
– connection code 3FB (Mégane II and Laguna II) or 3FB1 (Scénic II) between components 1105 and 983
(Laguna II) or 1337 (Mégane II and Scénic 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.
Check the rail pressure sensor using the interpretation of DF007 Rail pressure sensor circuit.
Repair if necessary.
If the fault is still present, check that the computer output is working correctly.
→Either using an ammeter:
With the regulator connected, connect the current clamp to connection 3FB (Mégane II and Laguna II) or 3FB1
(Scénic II) of the regulator (in the direction of the current).
Clear any rail pressure regulator faults and run command AC011 Rail pressure regulator.
The ammeter should display ten cycles of two successive currents: ~ 0.6A then ~ 2A.
→Or using a voltmeter:
With the regulator connected, connect the negative terminal of the voltmeter to connection 3HI of the rail pressure
regulator and the positive terminal to connection 3FB (Mégane II and Laguna II) or 3FB1 (Scénic II).
Clear any fuel pressure solenoid valve faults, then run command AC011 Rail pressure regulator:
The voltmeter should display two successive voltage readings:
~3.15V for an OCR* of 25% then ~9.45V for an OCR* of 75% (ten cycles)
→Or using an oscilloscope (range 5 V/division and time base 1 ms/division):
With the regulator connected, connect the negative terminal of the oscilloscope to the battery earth and the
positive terminal to connection 3HI of the fuel pressure solenoid valve, clear any rail pressure regulator faults, and
run command AC011 Rail pressure regulator:
the oscilloscope should display a square pulse signal with an amplitude of 12.5 V at a frequency of 185 Hz (with
an OCR* alternating successively from 25 to 75%).
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-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-102
MR-372-J84-13B200$324.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF070
PRESENT
OR
STOREDCLUTCH SWITCH CIRCUIT
1.DEF:No signal
2.DEF:Inconsistent signal
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after the clutch pedal is depressed, or during a road test.
Special notes:
If this fault is present, the cruise control/speed limiter function will be inhibited.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
WARNING
This fault may appear if the wiring harness has been damaged.
Follow the procedure described in the Wiring Check in the Introduction.
This check enables the condition and the conformity of the engine wiring harness to be checked.
Check the conformity and adjustment of the clutch switch (position, connection).
– Display status ET405 Clutch pedal switch:
– with the clutch engaged, status ET405 Clutch pedal switch should be RELEASED
– when the clutch pedal is disengaged status ET405 Clutch pedal switch should be DEPRESSED.
If these checks are not OK, replace the clutch switch.
If these checks are correct:
Check the connections of the clutch pedal switch.
Check the injection computer connections
Repair if necessary.
Check the continuity and absence of interference resistance on connection 86D between components 120
and 675.
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 MAM of the clutch pedal switch.
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, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF070/EDC16_V58_DF070/EDC16_V5C_DF070/EDC16_V18_DF070/EDC16_V1C_DF070/EDC16_V20_DF070
13B-106
MR-372-J84-13B200$324.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF097
PRESENT
OR
STOREDCAMSHAFT SENSOR CIRCUIT
1.DEF: No signal
2.DEF: Inconsistent signal
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.
A drop in engine speed followed by nominal behaviour from the vehicle is possible.
Special notes:
If this fault is present:
– It is impossible to start the vehicle,
– the level 1 warning light is illuminated.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
1.DEF
2.DEF
NOTESCheck the conformity of the + 12 V after relay supply line,
from connection 3FB (Mégane II and Laguna II) or 3FB1
(Scénic II) of component 1337 or 597.
Use the vehicle Wiring Diagrams Technical Note.
Check the camshaft sensor connections.
Check the injection computer connections.
Check the camshaft sensor fitting and positioning,
Also check its general condition, (damaged housing, overheating, etc.),
Carry out the necessary repairs.
Check the continuity and absence of interference resistance of the following connections:
– connection codes 3CQ and 3FJ between components 120 and 746.
With the ignition on and the camshaft sensor connected:
Use a voltmeter to measure the voltage between connections 3FJ and 3FB (Mégane II and Laguna II) or 3FB1
(Scénic II) of the camshaft sensor:
The voltage displayed should be equal to the battery voltage ± 0.08 V.
– If the voltage is outside permitted tolerance values, take the measurement again on the connector, with the
camshaft sensor disconnected,
– If the voltage is still outside permitted tolerance values with the sensor disconnected.
Check thecontinuity and the absence of interference resistance on connection 3FB (Mégane II and Laguna
II) or 3FB1 (Scénic II) between components 756 and 1337 or 597.
If the measured voltage is correct with the sensor disconnected.
Measure the resistance of the camshaft sensor between connections 3CQ and 3FB (Mégane II and Laguna II)
or 3FB1 (Scénic II).
Replace the sensor if its resistance is not 9750 Ω < X < 10750 Ω at 20°C
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, contact the Techline.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF097/EDC16_V58_DF097/EDC16_V5C_DF097/EDC16_V18_DF097/EDC16_V1C_DF097/EDC16_V20_DF097
13B-107
MR-372-J84-13B200$324.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF118
PRESENT
OR
STOREDEGR SOLENOID VALVE SERVO-CONTROL
1.DEF: Insufficient EGR valve flow.
2.DEF: Excessive EGR valve flow.
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 EGR function is disabled.
If 1.DEF is present, the level 1 warning light is lit.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
Priority when dealing with a number of faults:
–DF272 EGR valve control circuit if it is present or stored.
IMPORTANT
This fault can result in a rapid and significant fouling of the particle filter.
If dealing with this fault requires the EGR valve to be replaced, run 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 for continuity and absence of interference resistance of the following connections:
- connection code 3VP,
- connection code 3VQ.
between components 120 and 1460.
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 that there are no leaks on the EGR circuit, pierced or damaged pipes, and the tightness of the clips.
Measure the resistance of the EGR valve motor between connections 3VP and 3VQ.
Replace the EGR valve if the resistance displayed is not between 1 Ω < X < 400 Ω at 20°C.
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_DF118/EDC16_V58_DF118/EDC16_V5C_DF118/EDC16_V18_DF118/EDC16_V1C_DF118/EDC16_V20_DF118
13B-114
MR-372-J84-13B200$324.mif
V13
13B
DIESEL INJECTION
Fault finding – Interpretation of faults
DF195
PRESENT
OR
STOREDENGINE SPEED/CAMSHAFT SENSOR CONSISTENCY
1.DEF: Signal incoherent
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault becomes present after an attempt to start.
Special notes:
If the fault is stored, clear the fault from the computer memory.
Switch off the ignition, start the engine and check that the fault does not reappear.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
Check the engine speed sensor and camshaft sensor connections.
Check the injection computer connections.
Repair if necessary.
With the connector disconnected, check the continuity and absence of interference resistance on the
following connections:
– connection code 3FJ,
– connection code 3CQ,
between components 120 and 746.
– connection code 3BG,
– connection code 3BL.
between components120 and 149.
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.
With the ignition on and the camshaft sensor connected:
Use a voltmeter to measure the voltage between connections 3FJ and 3FB or 3FB1 of the camshaft sensor:
The voltage displayed should be equal to the battery voltage ± 0.08 V.
– If the voltage is outside permitted tolerance values, take the measurement again on the connector, with the
camshaft sensor disconnected,
– If the voltage is still outside permitted tolerance values with the sensor disconnected:
Check the continuity and absence of interference resistance on connection 3FB or 3FB1 between
components 746 and 1337 or 983.
If the voltage measured is correct, with the sensor disconnected:
Measure the resistance of the camshaft sensor between connections 3CQ and 3FB or 3FB1.
Replace the sensor if its resistance is not 9750 Ω < X < 10750 Ω at 20°C
Check that the engine speed sensor is correctly mounted and that the flywheel target is not damaged.
Check that the engine speed sensor – flywheel air gap is correct: 0.5 mm < X < 1.8 mm.
Measure the resistance of the engine speed sensor between connections 3BG and 3BL.
Replace the sensor if its resistance is not 510 Ω < X < 850 Ω at 20°C.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF195/EDC16_V58_DF195/EDC16_V5C_DF195/EDC16_V18_DF195/EDC16_V1C_DF195/EDC16_V20_DF195EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B-116
MR-372-J84-13B200$324.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF209
CONTINUED 1
EGR valve with a square connector:
Measure the resistance of the EGR valve position feedback potentiometer between connections 3GC and 3JM.
Replace the EGR valve if the resistance displayed is not between 3.9 Ω < X < 9.1 Ω at 20°C.
EGR valve with a flat connector:
Replace the EGR valve.
If the valve is jammed or irrevocably seized, replace the EGR valve.
When replacing the EGR valve, run command SC036 Reinitialise programming and select EGR valve to
reinitialise the EGR valve offsets (see Replacement of components).
CC.1
1.DEF
NOTESNone
Check the EGR valve connections.
Check the injection computer connections.
Repair if necessary.
Check the continuity and insulation from + 12 V of the following connections:
– connection code 3EL,
– connection code 3JM,
– connection code 3GC.
between components 120 and 1460.
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 + 5 V on connection 3GC of the EGR valve.
EGR valve with a square connector:
Measure the resistance of the EGR valve position feedback potentiometer between connections 3GC and 3JM.
Replace the EGR valve if the resistance displayed is not between 3.9 Ω < X < 9.1 Ω at 20°C.
EGR valve with a flat connector:
Replace the EGR valve.
If the valve is jammed or irrevocably seized, replace the EGR valve.
When replacing 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.