13B-91V9 MR-372-J84-13B450$102.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF054
CONTINUED 3
CC.0NOTESNone.
Check the condition of the turbocharging solenoid valve (see Wiring Diagram Technical Note, Mégane II ph2,
Scénic II ph2, component code 1475).
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Mégane II ph2, Scénic II ph2, component code 120).
If the connector(s) is/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.
Measure the resistance of the turbocharging solenoid valve between the following connections:
– Connection code 3FB of component 1475.
– Connection code 3MG of component 1475.
If the resistance measured is greater than 1 kΩ or less than 6 Ω, replace the turbocharging solenoid valve.
Check the continuity and insulation from earth of the following connections:
– Connection code 3MG between components 1475 and 120.
Check for the presence of + 12 V after relay on the turbocharging solenoid valve connector.
– Connection code 3FB of component 1475.
If 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 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.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-92V9 MR-372-J84-13B450$102.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF054
CONTINUED 4
1.DEFNOTESSpecial note:
This fault appears when the computer control section
has overheated.
Check the condition of the turbocharging solenoid valve (see Wiring Diagram Technical Note, Mégane II ph2,
Scénic II ph2, component code 1475).
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Mégane II ph2, Scénic II ph2, component code 120).
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.
Measure the resistance of the turbocharging solenoid valve between the following connections:
– Connection code 3FB of component 1475.
– Connection code 3MG of component 1475.
If the resistance measured is not 15.4 ± 0.1 Ω at 20°C, replace the turbocharging solenoid valve.
Check the continuity and insulation of the following connection:
– Connection code 3MG between components 1475 and 120.
Check for + 12 V after relay feed on the turbocharging solenoid valve connector.
– Connection code 3FB of component 1475.
If 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 stored, clear the fault using AC004 Turbocharging solenoid valve.
– If, when AC004 Turbocharging solenoid valve is running, DF054 ''Turbocharging solenoid valve control
circuit'' 1.DEF is present or stored, contact the Techline.
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.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-110V9 MR-372-J84-13B450$102.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF086
PRESENT
OR
STOREDCOOLANT PUMP RELAY CONTROL CIRCUITCC.0: Short circuit to earth
CC.1: Short circuit to + 12 V
CO: Open circuit
1.DEF: Internal electronic fault
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after the ignition has been switched off and after waiting
for 1 minute,
Or after an actuator control AC195 Electric coolant pump.
Special notes:
The control relay is located in the engine connection unit.
If the fault is present:
– turbocharger reliability compromised,
– coolant reliability compromised,
–the level 1 warning light is lit.
Use bornier Elé. 1681 or Elé. 1590 for any operation on the
injection computer connectors.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
EDC16C36_V44_DF086/EDC16C36_V4C_DF086/EDC16C36_V48_DF086/EDC16C36_V50_DF086/EDC16C36_V54_DF086/
EDC16C36_V58_DF086
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.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
1 3 B - 111V9 MR-372-J84-13B450$102.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF086
CONTINUED
CO.0NOTESNone.
Check the condition of the electric coolant pump relay connector (A 20A) (see Wiring Diagram Technical Note
for Mégane II ph2, Scénic II ph2, component code 573) and check that it operates correctly.
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Mégane II ph2, Scénic II ph2, component code 120).
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, continuity and the absence of interference resistance on the following connections:
– connection codes 32A and 32B between components 688 and 1337,
– connection codes 47Q and 115A between components 688 and 120.
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.
Check for connection code M earth on the turbocharger bearing coolant pump component code 369.
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.
If the fault is still present, contact the Techline.
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.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-118V9 MR-372-J84-13B450$102.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF119
CONTINUED 1
WARNING
If the fault is stored:
Visually check the condition of the surrounding area.
If, on detection of the fault, the engine speed is considerably slower than the idling speed (less than 400 rpm) and
no customer complaint is declared (warning light indicated by the customer does not come on and vehicle can be
started), the fault was detected because the engine stalled. Clear the fault and carry out a road test.
Check the sensor mounting and the conformity of the camshaft target.
Check that the camshaft sensor/camshaft sprocket air gap is 3 mm maximum.
Check the electrical specifications of the sensor:
Note:
Make sure that the resistance is measured between the tracks indicated.
1. Disconnect the sensor before measuring the resistance with an Ohmmeter or multimeter.
2. The resistance between connections 3FB and 3PL of component 746 (earth and supply) must be between
7.2 kΩ and 13.4 kΩ (10.2 kΩ nominal).
3. The resistance between connections3FB and 3CQ of component 746 (output and feed) should be above
100 kΩ.
4. The resistance between connections3PL and 3CQ of component 746 (output and earth) should be above
100 kΩ.
If the values are incorrect, replace the camshaft sensor.
Check the continuity of the following connections:
– Connection code 3PL between components 746 and 120.
– Connection code 3CQ between components 746 and 120.
Check for + 12 V after relay on connection 3FB of component 746.
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.
If the fault is still present, replace the camshaft sensor.
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.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-119V9 MR-372-J84-13B450$102.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF119
CONTINUED 2
2.DEFNOTESPriorities when dealing with a number of faults:
Deal with fault DF120 Engine speed sensor signal, 1.DEF
first if it is present or stored.
Check the condition of the camshaft sensor connector (see Wiring Diagram Technical Note, Mégane II ph2,
Scénic II ph2, component code 746).
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Mégane II ph2, Scénic II ph2, component code 120).
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 sensor mounting and the conformity of the camshaft target.
Check that the camshaft sensor/camshaft sprocket air gap is 3 mm maximum.
Check the continuity of the following connections:
– Connection code 3PL between components 746 and 120.
– Connection code 3CQ between components 746 and 120.
Check for + 12 V after relay on connection 3FB of component 746.
If the connector(s) is/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 tension of the timing belt.
– Check the conformity of the camshaft sprocket/camshaft assembly.
– Check the timing adjustment.
Carry out the necessary repairs.
If the fault is still present, contact the Techline.
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.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-122
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
DF151
STOREDMAIN RELAY CIRCUIT1.DEF: Relay cut off too soon
2.DEF: Relay cut off too late
NOTESSpecial notes:
The level 1 warning light is on.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
1.DEF
NOTESNone.
Check the condition of the injection feed relay mounting connector (see Wiring Diagram Technical Note, Mégane II
ph2, Scénic II ph2, component code 983).
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Mégane II ph2, Scénic II ph2, component code 120).
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 tightness and the condition of the "+ " and "-" battery terminals.
Check the conformity of the main relay (relay removed):
Insulation of the contacts between the following connections:
– Connection code 3FB of component 983.
– Connection codeBP37 of component983.
Resistance of the coil between the following connections:
– Connection code 3AA of component 983.
– Connection codeBP37 of component983.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
Replace the relay if the resistance is less than 6 Ωor greater than 1 kΩ.
EDC16C36_V44_DF151M/EDC16C36_V4C_DF151M/EDC16C36_V48_DF151M/EDC16C36_V50_DF151M/EDC16C36_V54_DF151M/
EDC16C36_V58_DF151MEDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-123
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
DF151
CONTINUED 1
Check for + 12 V battery on the following connection:
– Connection codeBP37 of component983.
Check for + 12 V after relay feed on the following connection:
– Connection code 3FB of component 983.
If 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 and absence of any interference resistance on the following connection:
– Connection code 3AA between components 983 and 120.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
Check for + 12 V after relay feed on the following connections:
– Connection code 3FB of component 120.
– Connection code AP29 of component 120.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
Check the conformity of the engine management computer earths:
– Connection code NT of component 120.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
Check the conformity of fuse FM3 in the engine fuse and relay box (crimping and condition of wires on terminals).
Check the conformity of the impact sensor: incorrect contact (depending on equipment).
If 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 injection supply relay.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58