13B-58
MR-372-J84-13B200$252.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF025
PRESENT
OR
STOREDPRE-POSTHEATING UNIT DIAGNOSTIC LINE
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after several attempts to start the engine or after running
actuator command AC001 Preheating unit.
Special notes:
It is difficult or even impossible to start the engine when cold.
If the fault is present, the level 1 warning light is lit.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
Check the pre-postheating unit connections.
Check the connections on all of the heater plugs.
Repair if necessary.
Check fuse F2 for Mégane II and Scénic II and FM12 for Laguna II (70A) located on the power supply fuse
board.
Check the resistance of the heater plugs:
Replace any plugs whose resistance is not less than 2 Ω at + 20°C.
Check the continuity and absence of interference resistance of the following connections:
– connection code 37AB between components 257 and 682.
– connection code 37AC between components 257 and 683.
– connection code 37Z between components 257 and 680.
– connection code 37AA between components 257 and 681.
Check for + 12 V on connection BP35 of the preheating unit (via fuse F2 for Mégane II and Scénic II and FM12
for Laguna II (70A).
If the fault is still present.
Check the injection computer connections.
Check the continuity and absence of interference resistance of the following connections:
– connection code3FY,
– connection code 3FF.
Between components 120 and 257.
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 pre-postheating unit.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF025/EDC16_V58_DF025/EDC16_V5C_DF025/EDC16_V18_DF025/EDC16_V1C_DF025/EDC16_V20_DF025
13B-62
MR-372-J84-13B200$288.mif
V13
13B
DIESEL INJECTION
Fault finding – Interpretation of faults
DF037
PRESENT
OR
STOREDENGINE IMMOBILISER
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after an attempt to start engine.
Special notes:
It is impossible to start the vehicle.
If the fault is present, the level 2 warning light is lit.
Use bornier Ele. 1681 or Ele. 1590 for any operation on the injection computer
connectors.
Check the UCH connections.
Check the injection computer connections.
Repair if necessary.
Perform a multiplex network test and run complete fault finding on the UCH (see 87B, Passenger compartment
connection unit) if the fault is declared present.
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_DF037/EDC16_V58_DF037/EDC16_V5C_DF037/EDC16_V18_DF037/EDC16_V1C_DF037/EDC16_V20_DF037EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
MR-372-J84-13B200$288.mif
13B-63
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
DF038
PRESENT
OR
STORED
COMPUTER1.DEF: Permanent high signal
2.DEF: Permanent low signal
3.DEF: Configuration absent or incorrect
4.DEF: Analogue/digital converter fault
5.DEF: Communication disrupted
6.DEF: EEPROM fault
7.DEF: Watchdog activation
8.DEF: Signal outside upper limit
10.DEF: Injector control
11.DEF: Injector control capacitor fault
12.DEF: Injection fault when decelerating
13.DEF: Initialisation error
14.DEF: Open circuit or internal electronic fault.
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after one attempt to start the engine, or with the engine
running.
Special notes:
If 6.DEF, 8.DEF, 12.DEF is present the level 1 warning light is lit.
If one of the other faults is present, the level 2 warning light is lit.
If 6.DEF 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.
Priority when dealing with a number of faults:
Deal with fault DF046: Battery voltage first if it is present or stored.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF038/EDC16_V58_DF038/EDC16_V5C_DF038/EDC16_V18_DF038/EDC16_V1C_DF038/EDC16_V20_DF038
13B-66
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
DF039
PRESENT
OR
STOREDINLET AIR TEMPERATURE SENSOR CIRCUIT
CO.1: Open circuit or short circuit to + 12 V
CC.0: Short circuit to earth
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after one attempt to start the engine, or with the engine
running.
Special notes:
If the fault is present:
– the air temperature value enters defect mode, i.e. PR059 Inlet air temperature =
20°C,
– the EGR function is inhibited,
– the level 2 warning light is lit.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
CO.1
NOTESNone
Check the air flowmeter connections.
Check the injection computer connections.
Repair if necessary.
Check the continuity of connection 3FB between components 799 and 597.
If the connection is 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 the continuity and insulation from + 12 V of the following connections:
– connection code 3B,
– connection code3DW,
– connection code 3KJ,
– connection code 3DU.
between components 120 and 799.
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.
Measure the resistance of the air temperature sensor between connections 3B and 3DW of the air flowmeter.
Replace the air flowmeter if the resistance displayed is not:
3553 Ω < X < 3875 Ω at 10°C
2352 Ω < X < 2544 Ω at 20°C
1612 Ω < X < 1730 Ω at 30°C
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF039/EDC16_V58_DF039/EDC16_V5C_DF039/EDC16_V18_DF039/EDC16_V1C_DF039/EDC16_V20_DF039
13B-68
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
DF040
PRESENT
OR
STOREDCYLINDER 1 INJECTOR CIRCUIT
CC.1: Short circuit to +12 V
CO: Open circuit
CC: Short circuit
1.DEF: Injector control
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after the engine has been started.
Special notes:
If CO.1, CC or 1.DEF is present, the level 2 warning light is lit.
If CO is present, the level 1 warning light is lit.
If CO 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).
If the fault is present, the injection on cylinder 1 is disabled.
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.
WARNING
This fault may appear if the wiring harness has been damaged.
Follow the procedure described in the Wiring Check in the Introduction.
This test enables the condition and the conformity of the engine wiring harness to be checked.
CC.1
CO
CC
1.DEF
NOTESNone
Check the connections on injector no 1.
Check the injection computer connections.
Repair if necessary.
Disconnect injector no. 1.
Measure the resistance of injector no. 1 between connections 3CR and 3KW.
Replace the injector if it has a short circuit (R = 0 Ω) or open circuit (infinite resistance measurement).
Otherwise reconnect injector no. 1.
Check the continuity and absence of interference resistance of the following connections:
– connection codes 3CR and 3KW between components 120 and 193.
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, run test 9: Poor injector operation.
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_DF040/EDC16_V58_DF040/EDC16_V5C_DF040/EDC16_V18_DF040/EDC16_V1C_DF040/EDC16_V20_DF040
13B-69
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
DF041
PRESENT
OR
STOREDCYLINDER 2 INJECTOR CIRCUIT
CC.1: Short circuit to +12 V
CO: Open circuit
CC: Short circuit
1.DEF: Injector control
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after the engine has been started.
Special notes:
If CO.1, CC or 1.DEF is present, the level 2 warning light is lit.
If CO is present, the level 1 warning light is lit.
If CO 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).
If the fault is present, the injection on cylinder 2 is inhibited.
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.
WARNING
This fault may appear if the wiring harness has been damaged.
Follow the procedure described in the Wiring Check in the Introduction.
This test enables the condition and the conformity of the engine wiring harness to be checked.
CC.1
CO
CC
1.DEF
NOTESNone
Check the connections on injector no. 2.
Check the injection computer connections.
Repair if necessary.
Disconnect injector no. 2.
Measure the resistance of injector no. 2 between connections 3KX and 3CS.
Replace the injector if it has a short circuit (R = 0 Ω) or open circuit (infinite resistance measurement).
Otherwise reconnect injector no. 2.
Check the continuity and absence of interference resistance of the following connections:
– connection codes 3KX and 3CS between components 120 and 194.
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, run test 9 Poor injector operation.
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_DF041/EDC16_V58_DF041/EDC16_V5C_DF041/EDC16_V18_DF041/EDC16_V1C_DF041/EDC16_V20_DF041
13B-70
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
DF042
PRESENT
OR
STOREDCYLINDER 3 INJECTOR CIRCUIT
CC.1: Short circuit to +12 V
CO: Open circuit
CC: Short circuit
1.DEF: Injector control
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after the engine has been started.
Special notes:
If CO.1, CC or 1.DEF is present, the level 2 warning light is lit.
If CO is present, the level 1 warning light is lit.
If CO 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).
If the fault is present, the injection on cylinder 3 is inhibited.
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.
WARNING
This fault may appear if the wiring harness has been damaged.
Follow the procedure described in the Wiring Check in the Introduction.
This test enables the condition and the conformity of the engine wiring harness to be checked.
CC.1
CO
CC
1.DEF
NOTESNone
Check the connections on injector no. 3.
Check the injection computer connections.
Repair if necessary.
Disconnect injector no. 3.
Measure the resistance of injector no. 3 between connections 3KY and 3CT.
Replace the injector if it has a short circuit (R = 0 Ω) or open circuit (infinite resistance measurement).
Otherwise reconnect injector no. 3.
Check the continuity and absence of interference resistance of the following connections:
connection codes 3KY and 3CT between components 120 and 195.
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, run test 9 Poor injector operation.
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_DF042/EDC16_V58_DF042/EDC16_V5C_DF042/EDC16_V18_DF042/EDC16_V1C_DF042/EDC16_V20_DF042
13B-71
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
DF043
PRESENT
OR
STOREDCYLINDER 4 INJECTOR CIRCUIT
CC.1: Short circuit to +12 V
CO: Open circuit
CC: Short circuit
1.DEF: Injector control
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after the engine has been started.
Special notes:
If CO.1, CC or 1.DEF is present, the level 2 warning light is lit.
If CO is present, the level 1 warning light is lit.
If CO 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).
If the fault is present, the injection on cylinder 4 is inhibited.
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.
WARNING
This fault may appear if the wiring harness has been damaged.
Follow the procedure described in the Wiring Check in the Introduction.
This test enables the condition and the conformity of the engine wiring harness to be checked.
CC.1
CO
CC
1.DEF
NOTESNone
Check the connections on injector no 4.
Check the injection computer connections.
Repair if necessary.
Disconnect injector no. 4.
Measure the resistance of injector no. 4 between connections 3KZ and 3CU.
Replace the injector if it has a short circuit (R = 0 Ω) or open circuit (infinite resistance measurement).
Otherwise reconnect injector no. 4.
Check the continuity and absence of interference resistance of the following connections:
– connection codes 3KZ and 3CU between components 120 and 196.
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, run test 9 Poor injector operation.
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_DF043/EDC16_V58_DF043/EDC16_V5C_DF043/EDC16_V18_DF043/EDC16_V1C_DF043/EDC16_V20_DF043