13B-148
MR-372-J84-13B200$360.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF532
PRESENT
OR
STOREDALTERNATOR CHARGE SIGNAL
CO.0: Open circuit or short circuit to earth
CC.1: Short circuit to + 12 V
1.DEF: Above maximum threshold.
2.DEF: Below minimum threshold.
NOTESConditions for applying the fault finding procedure to stored faults
The fault is declared present when the ignition is switched on or with the engine
running.
Special notes:
If the fault is present, the level 1 warning light will be lit.
IMPORTANT
The fault can appear after the alternator has been saturated for too long.
For stored faults, clear the fault, switch off the ignition and wait for 1 minute, then
perform a road test to confirm the fault before any carrying out any operation.
Run a multiplex network test (see 88B, Multiplexing).
For Laguna II:
If the fault is still present, check the insulation and continuity of connection 2K between components 120 and 103.
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_DF532/EDC16_V58_DF532/EDC16_V5C_DF532/EDC16_V18_DF532/EDC16_V1C_DF532/EDC16_V20_DF532
13B-152
MR-372-J84-13B200$360.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF652
PRESENT
OR
STORED
TURBINE UPSTREAM TEMPERATURE SENSOR CIRCUIT
CO: Open circuit
CC.0: Short circuit to earth
CC.1 : Short circuit to + 12 V
CO.1: Open circuit or short circuit to + 12 V
1.DEF: Signal outside upper limit
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault becomes present if:
– ignition is on (CC.0),
– following a road test, engine warm (CO.1).
Special notes:
If the fault is present:
– the EGR function is inhibited,
– particle filter regeneration is inhibited,
– the vehicle performance is reduced,
– the level 1 warning light is illuminated.
Priorities when dealing with a number of faults:
DF011 Sensor voltage supply no. 1
IMPORTANT
The turbine upstream temperature sensor only measures temperatures above
200°C.
Check the condition of the turbine upstream temperature sensor connector (see Wiring Diagram Technical
Note, Mégane II, Scénic II or Laguna II, component code 1589).
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Mégane II, Scénic II or Laguna II, component code 120).
If one of the connectors is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring
repair, wiring: precautions for repair), repair the connector, otherwise replace the wiring.
Check the continuity, absence of interference resistance and insulation against + 5 V and + 12 V of the
following connections:
– connection code 3ABS,
– connection code 3ABT.
Between components 120 and 1589.
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 continuity, absence of interference resistance and insulation to earth of connection 3ABS
between components 120 and 1589.
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 3ABT of the turbine upstream temperature sensor
If the fault is still present, warm up the engine until PR064 Coolant temperature = 80°C.
Run the engine at fast idle speed:
PR055 Engine speed = 1500 rpm for 2 minutes.
If PR667 Turbine upstream temperature remains fixed at 200°C, replace the turbine upstream temperature
sensor.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF652/EDC16_V58_DF652/EDC16_V5C_DF652/EDC16_V18_DF652/EDC16_V1C_DF652/EDC16_V20_DF652
13B-155
MR-372-J84-13B200$360.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF778
CONTINUED
Check the turbine upstream temperature sensor connections.
check the engine management computer connections.
If 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, absence of interference resistance and insulation against + 5 V and + 12 V of the
following connections:
– connection code 3ABS,
– connection code 3ABT.
Between components 120 and 1589.
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 continuity, absence of interference resistance and insulation to earth of connection 3ABS
between components 120 and 1589.
Check for earth on connection 3ABT of the turbine upstream temperature sensor.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Apply TEST 4 Turbocharged air inlet circuit check.
If the fault is still present, warm up the engine until parameter PR064 Coolant temperature = 80°C.
Run the engine at fast idle speed:
PR055 Engine speed = 1500 rpm for 2 minutes.
If PR667 Turbine upstream temperature remains fixed at 200°C, replace the turbine upstream temperature
sensor.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
13B-158
MR-372-J84-13B200$360.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
*diff: differentialDF953
PRESENT
OR
STORED
PARTICLE FILTER ABSENT
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:
– particle filter regeneration is inhibited,
– blue/white smoke and black particles coming from the exhaust,
– the OBD warning light illuminates after three consecutive driving cycles (starting
+ 5 seconds + switch off the ignition and wait 1 minute).
Priorities when dealing with a number of faults:
Firstly, deal with the following faults:
–DF315 Particle filter diff* pressure sensor if it is present or stored.
–DF717 Particle filter upstream pressure if it is present or stored.
Use bornier Elé.1681 for all operations on the engine management computer
connector.
IMPORTANT
In the long term, this fault may lead to premature wear and a greater risk of
turbocharger failure.
Check the condition of the differential pressure sensor connector (see Wiring Diagram Technical Note,
Mégane II, Scénic II or Laguna II, component code 1290).
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Mégane II, Scénic II or Laguna II, component code 120).
If the connector(s) is faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, wiring: Precautions for repair), repair the connector(s); otherwise, replace the wiring.
Check the particle filter is present.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF953/EDC16_V58_DF953/EDC16_V5C_DF953/EDC16_V18_DF953/EDC16_V1C_DF953/EDC16_V20_DF953
13B-160
MR-372-J84-13B200$360.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF1070
PRESENT
OR
STOREDCOLD LOOP
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present with the engine running and a heating and air
conditioning request
Priorities when dealing with a number of faults:
Firstly, deal with the following faults:
–DF049 Refrigerant sensor circuit, if it is present or stored.
When the fault is present or stored, the heating and air conditioning system is inhibited.
Check fuse F22 (10A) of the UPC and the condition of the air conditioning compressor connector.
If the connectors is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Check the air conditioning compressor wiring.
If the wiring is faulty and there is a repair procedure (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Manually check if the compressor is jammed (turn the clutch plate manually to check that there is no point of
resistance). In the event of sticking, replace the air conditioning compressor (see MR 364 (Mégane II) or 370
(Scénic II), Mechanical, Heating and air conditioning system, 62A, Air conditioning, Compressor:
Removal – Refitting).
Top up with refrigerant, check for any leaks and repair if necessary (see MR 364 (Mégane II) or 370 (Scénic II),
Mechanical, Heating and air conditioning system, 62A, Air conditioning, Refrigerant circuit: check,
Refrigerant circuit: Draining – Filling).
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF1070/EDC16_V58_DF1070/EDC16_V5C_DF1070/EDC16_V18_DF1070/EDC16_V1C_DF1070/EDC16_V20_DF1070
13B-165
MR-372-J84-13B200$504.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of statuses
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
ET001
CONTINUED
Sensor electrical conformity
"ABSENT"
NOTESIgnition on
Check the condition and the conformity of the supply fuse F5D (5A) of the Protection and Switching Unit
(Vdiag 18, 1C, 20 only).
Repair if necessary
Check for an earth on connection NT (Laguna II) or N (Mégane II and Scénic II) of component 120.
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 for a + 12 V feed on connection AP29 (Laguna II) or AP15 (Mégane II and Scénic II) of the injection
computer.
If there is no voltage, check the continuity and insulation from earth of connection AP29 (Laguna II) or AP15
(Mégane II and Scénic II) between components 120 and 1337 (Vdiag 18, 1C, 20 only) or 597 (Vdiag 50, 58, 5C
only).
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.
PRESENT
NOTESIgnition on
Check that there is no + 12 V feed with the ignition off on connection AP29 (Laguna II) or AP15 (Mégane II and
Scénic II) of component 120.
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.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
13B-169
MR-372-J84-13B200$504.mif
V13
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET007
CONTINUED
INACTIVE
After the engine is started and the postheating phase, the injection computer should
stop the pre-postheating unit operating.
Status ET007 should become NO.
In the event that the vehicle does not start and status ET007 remains NO, check the
continuity and absence of interference resistance of the following connections:
– Connection code 3FY,
– Connection code 3FF.
Between components 120 and 257.
If the connection or connections are faulty and 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, refer to the interpretation of faults:
– DF017 Preheating relay control circuit.
– DF025 Pre-postheating unit diagnostic connection.
AFTER REPAIRCarry out a road test followed by a check with the diagnostic tool.
13B-176
MR-372-J84-13B200$504.mif
V13
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET042
CONTINUED 1
INACTIVE
Procedure to apply for Laguna II:
When the main switch is in rest position (or neutral), status ET042 is INACTIVE.
If CRUISE CONTROL or SPEED LIMITER appears despite the main switch being in
the rest (or neutral) position, carry out the following operations:
Check the connections of the cruise control/speed limiter main switch.
Check for + 12 V APC on the main switch connector.
– Connection code AP10 of component 1081.
Disconnect the main switch and with it in the rest position, check the insulation
between:
– Connection codes AP10 and 3FX of component 1081.
– Connection codes AP10 and 3PD of component 1081.
Check the continuity between connections AP10 and 3PD of component 1081 in the
speed limiter position.
Check the continuity between connections AP10 and 3FX of component 1081 in the
cruise control position.
If these checks are not in order, replace the switch.
Check the insulation, continuity and the absence of interference resistance on the
following connections:
– Connection code 3FX,
– Connection code3PD.
Between components 1081 and 120.
Also check the engine management computer connectors.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
AFTER REPAIRCarry out a road test followed by a check with the diagnostic tool.