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
13B-139
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
DF209
PRESENT
OR
STOREDEGR VALVE POSITION SENSOR CIRCUIT
CC.1: Short circuit to +12 V
CO.0: Open circuit or short circuit to earth
NOTESPriorities when dealing with a number of faults:
– DF046 Battery voltage,
– DF012 Sensor supply voltage no. 2,
if present or stored.
Conditions for applying the fault finding procedure to a stored fault:
The fault is declared present after:
– the ignition is switched on.
– the engine is started,
– a road test.
Special notes:
If the fault is present:
–the European On Board Diagnostic warning light is lit,
– increase in polluting emissions,
– EGR programming cut-off: valve in the closed position.
Use bornier Ele. 1681 for all operations on the engine management computer
connector.
For EGR valves with a flat connector, it is not possible to check the sensor resistance.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
EDC16C36_V44_DF209/EDC16C36_V4C_DF209/EDC16C36_V48_DF209/EDC16C36_V50_DF209/EDC16C36_V54_DF209/
EDC16C36_V58_DF209EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-151
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
DF249
PRESENT
OR
STOREDINJECTOR CONTROL
1.DEF: Internal electronic fault
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after:
– the ignition is switched on,
– the engine is started.
Priority when dealing with a number of faults:
Deal with faults DF046 Battery voltage, DF026 Injector cylinder 1 control circuit,
DF027 Injector cylinder 2 control circuit, DF028 Injector cylinder 3 control circuit
and DF029 Injector cylinder 4 control circuit first if they are present or stored.
Special notes:
In some cases if the fault is present, the level 2 warning light illuminates and the engine
stops.
Use bornier Elé.1681 for all operations on the engine management computer.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
EDC16C36_V44_DF249/EDC16C36_V4C_DF249/EDC16C36_V48_DF249/EDC16C36_V50_DF249/EDC16C36_V54_DF249/
EDC16C36_V58_DF249EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-183
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$104.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF647
PRESENT
OR
STOREDEGR VALVE POSITION REGULATION1.DEF: Inconsistent EGR 1 offset
2.DEF: Offset too high: valve clogged, stuck open or abnormal
3.DEF: Inconsistent EGR 3 offset
4.DEF: Above maximum threshold
5.DEF: Valve jammed closed
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after:
– the engine is started,
– a road test.
Special notes:
If the fault is present:
–the level 1 warning light is illuminated for 1.DEF, 3.DEF and 5.DEF,
–the European On Board Diagnostic warning light is illuminated for 2.DEF and
4.DEF,
– the EGR function and turbocharging are inhibited by the engine management
computer,
– engine torque is limited.
Use bornier Ele. 1681 for all operations on the engine management computer
connector.
If faults DF647 and DF038 Computer are displayed at the same time, deal with DF038
Computer first. Then check that the EGR valve is open during idling to make sure that
the programming has not been lost. If the valve does not open, carry out the
programming phase.
Priorities when dealing with a number of faults:
– DF209 EGR valve position sensor circuit,
– DF046 Battery voltage,
– DF012 Sensor supply voltage no. 2,
– DF272 EGR valve control circuit,
if they are present or stored.
For EGR valves with a flat connector, it is not possible to check the sensor resistance.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
EDC16C36_V44_DF647/EDC16C36_V4C_DF647/EDC16C36_V48_DF647/EDC16C36_V50_DF647/EDC16C36_V54_DF647/
EDC16C36_V58_DF647EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-205V9 MR-372-J84-13B450$131.mif
13B
ET001COMPUTER + AFTER IGNITION FEED
STATUS DEFINITIONPRESENT: This status indicates that the + after ignition feed is active.
"ABSENT": This status indicates that the + after ignition is not active.
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
Use the Mégane II ph2, Scénic II ph2 Wiring Diagram Technical Note.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature
> 80°C
PRESENTIgnition on and engine running warm at idle speed with the + after ignition feed
activated.
In the event of a fault, apply the interpretation of DF046 Battery voltage or DF151
Main relay circuit.
EDC16C36_V44_ET001/EDC16C36_V4C_ET001/EDC16C36_V48_ET001/EDC16C36_V50_ET001/EDC16C36_V54_ET001/
EDC16C36_V58_ET001
DIESEL INJECTION
Fault finding – Interpretation of statuses
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-211V9 MR-372-J84-13B450$131.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET007
CONTINUED
ACTIVE
The continuity and absence of interference resistance on the following
connections:
– Connection code 37AB between components 257 and 683,
– Connection code 37AA between components 257 and 680,
– Connection code 37Z between components 257 and 681,
– Connection code 37AC between components 257 and 682.
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 the wiring.
Check the status of the preheating unit and that they are connected correctly (see
Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2, Component code
257).
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 vehicle starts, postheating has ended and status ET007 remains ACTIVE during
the engine operating phase, consult the interpretation of faults DF017 'Preheating
unit control circuit'' and DF025 Preheating unit diagnostic line (see
Interpretation of faults).
INACTIVEIf the vehicle does not start, the status remains INACTIVE and preheating was not
executed when the ignition was switched on or during the starting phase.
Check the continuity and absence of interference resistance on the following
connections:
– Connection code 3FY, between components 120 and 257.
– Connection code 3FF between components 120 and 257.
Check the + 12 V battery supply to the pre-postheating unit.
– Connection code BP35 of component 257.
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 the wiring.
Conformity check with engine running, engine coolant temperature > 80°C
ACTIVE
then
INACTIVEAfter the engine has been running for a certain period, the status changes from
ACTIVE to INACTIVE.
In the event of a fault, consult the interpretation of fault DF017 Preheating unit
control circuit.
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-229V9 MR-372-J84-13B450$131.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET120PRE-POSTHEATING SIGNAL
STATUS DEFINITIONPRESENT: This status indicates that the pre-postheating signal is still active.
ABSENT: This status indicates that the pre-postheating signal is not active.
NOTESTest the battery and run fault finding on the charging circuit (see Technical Note
6014A, Checking the charging circuit).
Special notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature
> 80 °C
PRESENTStatus ET120 is PRESENT when preheating is activated.
ABSENTThe status ET120 is ABSENT as long as pre-postheating is not activated. See
interpretation of faults DF025 Preheating unit diagnostic line and DF017
Preheating unit control circuit.
EDC16C36_V44_ET120/EDC16C36_V4C_ET120/EDC16C36_V48_ET120/EDC16C36_V50_ET120/EDC16C36_V54_ET120/
EDC16C36_V58_ET120
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58