2011 RENAULT SCENIC Engine And Peripherals EDC16 Workshop Manual

13B-81
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
DF053
CONTINUED 1
Check the continuity and insulation from + 12 V of connection 3HI between components 120 and 1105.
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.
If the fault is still present, replace the injection pump.
CC.0
CO
NOTESNone
Check the rail pressure regulator connectors.
Check the injection computer connections.
Check the low pressure circuit by running test 3 Low pressure circuit check.
Check the conformity of the fuel used by running test 11 Diesel fuel conformity check.
Check the overpressure valve, run test 12 Incorrect operation of the overpressure valve,
Check the operation of the injectors, run test 9 Incorrect injector operation.
Repair if necessary.
Measure the resistance of the rail pressure regulator between connections 3HI and 3FB (Mégane II and
Laguna II) or 3FB1 (Scénic II).
Replace the injection pump if its resistance is not 3 ohms ± 1 Ω at 20°C.
Check the continuity and insulation to earth on connection 3HI between components 120 and 110 5.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.

13B-82
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
DF053
CONTINUED 2
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, check for + 12 V after relay on the connection 3FB (Mégane II and Laguna II) or 3FB1
(Scénic II) of the rail pressure regulator.
If there is no + 12 V on connection 3FB (Mégane II and Laguna II) or 3FB1 (Scénic II), check the continuity
and absence of interference resistance of the following connections:
– connection code 3FB between components 11 05 and 983 (Laguna II),
– connection code 3FB1 between components 110 5 and 1337 (Scénic II),
– connection code 3FB between components 11 05 and 1337 (Mégane 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.
If the fault is still present, replace the injection pump.
1.DEF
NOTESNone
Check the rail pressure regulator connectors.
Check the injection computer connections.
Check the low pressure circuit by running test 3 Low pressure circuit check.
Check the conformity of the fuel used by running test 11 Diesel fuel conformity check.
Check the overpressure valve, run test 12 Incorrect operation of the overpressure valve,
Check the operation of the injectors, run test 9 Incorrect injector operation.
Repair if necessary.
Measure the resistance of the pressure regulator between connections 3HI and 3FB (Mégane II and Laguna II)
or 3FB1 (Scénic II).
Replace the injection pump if its resistance is not 3 ohms ± 1 at 20°C.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.

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-84
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
DF053
CONTINUED 4
2.DEF A
8.DEF
NOTESNone
Check the rail pressure regulator connectors.
Check the injection computer connections.
Check the low pressure circuit by running test 3 Low pressure circuit check.
Check the conformity of the fuel used by running test 11 Diesel fuel conformity check.
Check the overpressure valve, run test 12 Incorrect operation of the overpressure valve.
Repair if necessary.
Measure the resistance of the pressure regulator between connections 3FB (Mégane II and Laguna II) or 3FB1
(Scénic II) and 3HI.
Replace the injection pump if its resistance is not 3 ohms ± 1 Ω at 20°C.
Check the continuity and absence of interference resistance on 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.
In the event of rail overpressure:
Check the operation of the injectors by running test 9 Poor injector operation.
Check that the rail pressure sensor is operating correctly using command AC011 Rail pressure regulator. Check
the conformity of parameter PR038 Rail pressure.
If these checks do not reveal any faults, and if the fault is still present, replace the rail pressure regulator.
in the event of rail underpressure:
Check that the rail pressure sensor is operating correctly using command AC011 Rail pressure regulator. Check
the conformity of parameter PR038 Rail pressure.
Check the low pressure diesel circuit priming.
Check the conformity of the diesel filter connections.
Check the condition of the filter (clogging and water saturation).
Check that there are no air bubbles between the filter and the high pressure pump.
Check the low and high pressure diesel fuel circuit sealing (visual inspections, etc.) pump housing, pressure relief
valve, pipes, rail and injector unions, injector wells, etc.
Check the conformity of the seal fitting on the pressure regulator.
Check the operation of the injectors by running test 9 Poor injector operation.
Carry out the necessary operations.
If the fault is still present replace the rail pressure regulator.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.

13B-85
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
PRESENT
OR
STORED
TURBOCHARGING SOLENOID VALVE CONTROL CIRCUIT
CC.1: Short circuit to +12 V
CC.0: Short circuit to earth
CO: Open circuit
1.DEF: Internal electronic fault
2.DEF : Inconsistent signal
3.DEF: Below minimum threshold
4.DEF: Above maximum threshold
5.DEF: Permanent high signal
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after:
– the engine is started,
– a road test,
– actuator command AC004 Turbocharging solenoid valve.
Special notes:
If the fault is present:
– turbocharging is no longer authorised,
– the EGR function is inhibited,
– the vehicle performance is reduced,
– the level 1 warning light is lit,
–If CC.0 is present, the OBD warning light will come on after three consecutive
driving cycles (starting + 5 seconds, switch off the ignition and wait for 1 minute).
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_DF054/EDC16_V58_DF054/EDC16_V5C_DF054/EDC16_V18_DF054/EDC16_V1C_DF054/EDC16_V20_DF054

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