DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B -130V3 MR-372-J84-13B250$450.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF778
PRESENT
OR
STOREDTURBINE UPSTREAM TEMPERATURE CONTROL
1.DEF: Temperature measured too high
2.DEF: Parameter at max limit
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault becomes present:
–the engine is started with a speed greater than 1750 rpm and a fuel flow greater than
30 mg/st,
–a road test.
Special notes:
If the fault is present:
–particle filter regeneration is inhibited,
–the vehicle performance is reduced,
–the level 1 warning light is illuminated.
IMPORTANT
This fault can result in a rapid and significant fouling of the particle filter.
Apply TEST 3 Turbocharged air inlet circuit check.
Check the turbine upstream temperature sensor connections.
check the engine management computer connections.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V51_DF778
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B -131V3 MR-372-J84-13B250$450.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
DF778
CONTINUED
Check the continuity, the absence of interference resistance, and the insulation to +5 V and +12 V of the
following connections:
–connection code 3ABS,
–connection code 3ABT.
Between components 120 and 1589.
Check the continuity, the absence of interference resistance, and the 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, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, replace the turbine upstream temperature sensor.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
DIESEL INJECTION
Fault finding – Interpretation of faults13B
13B -132V3 MR-372-J84-13B250$450.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
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 with a heating and air
conditioning system request.
Priorities when dealing with a number of 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 connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
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 the wiring.
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 the 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_V51_DF1070
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
13B - 182V3 MR-372-J84-13B250$630.mif
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
ET042
CONTINUED 1
INACTIVEWhen the main switch is in rest position (or neutral), status ET042 is "INACTIVE".
If "CRUISE CONTROL" or "SPEED LIMITER" appears despite the main button being in
the rest position (or neutral), 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 AP43 of component 1081 (Mégane II)
–Connection code AP43 of component 1546 (Scénic II)
Disconnect the main switch and with it in the rest position, check the insulation between:
–Connection codes AP43 and 3FX of component 1081 (Mégane II)
–Connection codes AP43 and 3PD of component 1081 (Mégane II)
–Connection codes AP43 and 3FX of component 1546 (Scénic II)
–Connection codes AP43 and 3PD of component 1546 (Scénic II)
Check the continuity between connections AP43 and 3PD of component 1081
(Mégane II) and component 1546 (Scénic II) in speed limiter position.
Check the continuity between connections AP43 and 3FX of component 1081
(Mégane II) and component 1546 (Scénic II) in 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 code 3PD.
Between components 1081 and 120 (Mégane II)
Between components 1546 and 120 (Scénic II)
Also check the engine management computer connectors.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Repair precautions), repair the wiring, otherwise replace it.
AFTER REPAIRSwitch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
13B - 183V3 MR-372-J84-13B250$630.mif
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
ET042
CONTINUED 2
SPEED LIMITERWhen the driver presses the main switch in the speed limiter position, status ET042
becomes SPEED LIMITER.
If CRUISE CONTROL or INACTIVE appears although the switch was pressed in the
speed limiter position, carry out the following operations:
Check the connections of the cruise control/speed limiter main switch.
Check for + 12 V after ignition feed on the main switch connector.
●Connection code AP43 of component 1081 (Mégane II).
●Connection code AP43 of component 1546 (Scénic II).
Disconnect the main switch and with it in the rest position, check the insulation between:
●Connection code AP43 and 3FX, of component 1081 (Mégane II).
●Connection code AP43 and 3PD, of component 1081 (Mégane II).
●Connection code AP43 and 3FX, of component 1546 (Scénic II).
●Connection code AP43 and 3PD, of component 1546 (Scénic II).
–Check the continuity between connections AP43 and 3PD of component 1081
(Mégane II) and component 1546 (Scénic II) in speed limiter position.
–Check the continuity between connections AP43 and 3FX of component 1081
(Mégane II) and component 1546 (Scénic II) in cruise control position.
If these checks show incorrect values, replace the main switch.
Check the insulation, continuity and the absence of interference resistance on the
following connections:
●Connection code 3FX,
●Connection code 3PD,
between components 1081 and 120 (Mégane II).
between components 1546 and 120 (Scénic II).
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 the wiring.
AFTER REPAIRSwitch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
13B - 184V3 MR-372-J84-13B250$630.mif
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
ET042
CONTINUED 3
CRUISE CONTROLWhen the driver presses the main switch in the cruise control position, status ET042
becomes CRUISE CONTROL.
If SPEED LIMITER or INACTIVE appears although the driver pressed the switch in the
cruise control position, carry out the following operations:
Check the connections of the cruise control/speed limiter main switch.
Check for + 12 V after ignition feed on the main switch connector.
●Connection code AP43 of component 1081 (Mégane II).
●Connection code AP43 of component 1546 (Scénic II).
Disconnect the switch and when it is in the rest position, check the insulation between:
●Connection code AP43 and 3FX, of component 1081 (Mégane II).
●Connection code AP43 and 3PD, of component 1081 (Mégane II).
●Connection code AP43 and 3FX, of component 1546 (Scénic II).
●Connection code AP43 and 3PD, of component 1546 (Scénic II).
–Check the continuity between connections AP43 and 3PD of component 1081
(Mégane II) or component 1546 (Scénic II) in speed limiter position.
–Check the continuity between connections AP43 and 3FX of component 1081
(Mégane II) or component 1546 (Scénic II) in cruise control position.
If these checks show incorrect values, replace the main switch.
Check the insulation, continuity and the absence of interference resistance on the
following connections:
●Connection code 3FX,
●connection code 3PD.
Between components 1081 and 120 (Mégane II).
Between components 1546 and 120 (Scénic II).
Also check the engine management computer connectors.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Repair precautions), repair the wiring, otherwise replace it.
AFTER REPAIRSwitch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
13B - 202V3 MR-372-J84-13B250$630.mif
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
ET703
CRUISE CONTROL/SPEED LIMITER BUTTONS
NOTESSpecial notes:
Carry out these checks if the statuses do not correspond with system operation
programming.
INACTIVEStatus ET703 becomes INACTIVE when none of the cruise control/speed limiter buttons
is pressed. These buttons are located on the steering wheel.
If status ET703 does not display INACTIVE,
- check the condition of the cruise control/speed limiter “+/-” button and the condition of
its connector.
check the condition of the cruise control/speed limiter "R/0" button and the condition of
its connector.
INCREASEStatus ET703 becomes “PLUS” when the cruise control/speed limiter “+” button is
pressed. This button is on the steering wheel, on the left-hand side.
If status ET703 does not display PLUS, check the condition of the cruise control/speed
limiter “+/-” button, and the condition of its connector. Repair if necessary.
To carry out these checks and measurements in complete safety, observe the
recommendations for removing the driver's front airbag (see MR 364 (Mégane) or 370
(Scénic), Mechanical, 88C, Airbag and seat belt pretensioners, Driver's front
airbag, Removal - Refitting).
Measure the resistance of the following connections while pressing the + button
(on the button tracks):
●Connection code 86G, of component 331.
●Connection code 86M of component 331.
If the resistance is not approximately 300 Ω, check the continuity of the connection when
the button is in the rest position.
If there is continuity, replace the +/- control button.
If there is a repair method (See Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
AFTER REPAIRSwitch off the ignition and carry out a road test followed by a test with the diagnostic tool
EDC16_V51_ET703
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
13B - 203V3 MR-372-J84-13B250$630.mif
EDC16
PROGRAM NO.: C1
Vdiag No.: 51
ET703
(CONTINUED 1)
DECREASEStatus ET703 becomes MINUS when the cruise control/speed limiter - button is pressed.
This button is on the steering wheel, on the left-hand side.
If status ET703 does not change to MINUS, check the condition of the cruise control/
speed limiter “+/-” button, and the condition of its connector. Repair if necessary.
To carry out these checks and measurements in complete safety, observe the
recommendations for removing the driver's front airbag (see 364 (Mégane) or 370
(Scénic), Mechanical, 88C, Airbag and seat belt pretensioners, Driver's front
airbag, Removal - Refitting).
Measure the resistance of the following connection whilst pressing the - button (on
the button tracks):
●Connection code 86G, of component 331.
●Connection code 86M of component 331.
If the resistance is not approximately 100 Ω, check the continuity of the connection when
the button is in the rest position.
If there is continuity, replace the +/- control button.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring
SUSPENDStatus ET703 becomes “SUSPEND” when the cruise control/speed limiter “0” button is
pressed. This button is located on the steering wheel, to the right.
If status ET703 does not change to SUSPEND, check the condition of the cruise control/
speed limiter “R/0” button, and the condition of its connector.
To carry out these checks and measurements in complete safety, observe the
recommendations for removing the driver's front airbag (see 364 (Mégane) or 370
(Scénic), Mechanical, 88C, Airbag and seat belt pretensioners, Driver's front
airbag, Removal - Refitting).
Measure the resistance of the following connection whilst pressing the 0 button
(on the button tracks):
●Connection code 86G, of component 331.
●Connection code 86M of component 331.
If the resistance is not approximately 0Ω, replace the R/0 control button.
If there is continuity, replace the R/0 control button.
If there is a repair method (See Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
AFTER REPAIRSwitch off the ignition and carry out a road test followed by a test with the diagnostic
tool.