2011 RENAULT SCENIC ECU

13B-3V4 MR-372-J84-13B000$010.mif
DIESEL INJECTION
Fault finding – Introduction13B
DDCR INJECTION
Vdiag No.: 44, 48
To cut off + after ignition, proceed as follows:
– disconnect the diagnostic tool,
– press the start button twice briefly (less than 3 seconds),
– check that the + after ignition feed has been cut off by checking that the computer warning lights on the instrument
panel have gone out.
Fault
Faults are declared present or stored (depending on whether they appeared in a certain context and have
disappeared since, or whether they remain present but are not diagnosed within the current context).
The present or stored status of the faults should be taken into consideration when the diagnostic tool is used after
the + after ignition feed has been connected (with no system components activated).
For a present fault,apply the procedure described in the Interpretation of faults section.
For a stored fault, note the faults displayed and apply the Notes paragraph.
If the fault is confirmed when the notes are applied, the fault is present. Deal with the fault.
If the fault is not confirmed, check:
– the electrical lines which correspond to the fault,
– the connectors on these lines (corrosion, bent pins, etc.),
– the resistance of the faulty component,
– the condition of the wires (melted or cut insulation, wear).
Or use diagnostics to check the circuit of the suspect component.
Conformity check
The conformity check is designed to check the statuses and parameters that do not display any faults on
the diagnostic tool when inconsistent. Therefore, this stage is used to:
Run fault finding on faults that do not have a fault display, and which may correspond to a customer complaint,
– Check that the system is operating correctly and that there is no risk of a fault recurring after repair.
– This section features the fault finding procedures for statuses and parameters, and the conditions for checking
them.
If a status is not operating normally or a parameter is outside permitted tolerance values, you should consult
the corresponding fault finding page.
Customer complaints - Fault-finding chart
If the diagnostic tool check is correct, but the customer complaint is still present, it should be dealt with using
Customer complaints.NOTE:
The right-hand and left-hand xenon bulb computers are powered when the dipped headlights are lit. Fault finding
can only be carried out on them after the ignition has been switched on in fault finding mode (forced + after ignition
feed) and the dipped headlights are on.
A summary of the overall procedure to follow is provided on the following page in the form of a flow chart.

13B-14V4 MR-372-J84-13B000$020.mif
DIESEL INJECTION
Fault finding – System operation13B
DDCR INJECTION
Vdiag No.: 44, 48
Temperature / emergency stop warning light
This indicator light is used both as an in-operation indicator light and as a system fault warning light. It illuminates for
3 seconds when the power is switched on (automatic test procedure controlled by the instrument panel)
Continuously lit: indicates engine overheating or a Level 2 fault.
– if the fault reaches a critical level, the injection cuts off automatically after several seconds.
– in the event of engine overheating, it is the driver's choice to stop the car or continue driving.
ACTIVATION PROGRAMMING OF THE INSTRUMENT PANEL WARNING LIGHTS
Orange SERVICE warning light (level 1)
This warning light comes on, accompanied by the faulty injection message.
The driver should have the repairs carried out as soon as possible.
Red STOP warning light (level 2)
This warning light comes on, accompanied by the faulty injection message.
The driver should have the repairs carried out as soon as possible.
Excess pollution OBD ORANGE warning light:
This warning light is used to alert the driver of any injection faults that could lead to excessive pollution, or if
the EOBD system has been deactivated. The injection computer requests illumination of the OBD warning light for
a present fault only after three consecutive driving cycles.
The 3 second visual inspection when the ignition is switched on (automatic test procedure managed by
the instrument panel) is carried out by the injection computer.
Faults that activate the OBD warning light
Associated
faultTitle Specification
DF010 EGR position sensor circuit CC.1 - CO.0
DF016 EGR control circuit CC.1
DF026 Cylinder 1 injector control circuit CO – CC
DF027 Cylinder 2 injector control circuit CO – CC
DF028 Cylinder 3 injector control circuit CO – CC
DF029 Cylinder 4 injector control circuit CO – CC
DF038 Computer 3. DEF
DF114 EGR solenoid valve circuit 4. DEF

13B-41
AFTER REPAIRDeal with any faults displayed by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$061.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF026
CONTINUED
YES
Injector 1 is not faulty, the fault is in the injector 1 control circuit.
Check the continuity, insulation, and the absence of interference resistance on
the following connections:
Computer connector B track A4 Track 1 injector 1
Computer connector B track B4 Track 2, injector 1
Repair if necessary.
If the fault is still present, contact the Techline.
NOInjector 1 is faulty, replace the cylinder 1 injector.
1.DEF
NOTESNone.
Check the conformity of the injectors fitted to the vehicle in relation to the engine number and type
(low, high or very high pressure injector).
Check that the C2I is correctly entered on the computer.
Check the accelerometer shielding on track K1 of the brown 48-track connector B of the computer.
Check that the accelerometer is secured on the engine.
After retightening the accelerometer, it is essential to clear the pressure regulation adaptives using command
RZ004 Pressure regulation adaptives.
Disconnect and reconnect the accelerometer sensor to accomplish fast programming.
If the fault is still present, replace the cylinder 1 injector.

13B-43
AFTER REPAIRDeal with any faults displayed by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$061.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF027
CONTINUED
YES
Injector 2 is not faulty, the fault is in the injector 2 control circuit.
Check the continuity, insulation, and the absence of interference resistance on
the following connections:
Computer connector B track G4 Track 1 injector 2
Computer connector B track H4 Track 2, injector 2
Repair if necessary.
If the fault is still present, contact the Techline.
NOInjector 2 is faulty, replace the cylinder 2 injector.
1.DEF
NOTESNone.
Check the conformity of the injectorsfitted to the vehicle in relation to the type of vehicle and engine number (low,
high or very high injector pressure).
Check that the C2I is correctly entered on the computer.
Check the accelerometer shielding on track K1 of the brown 48-track connector B of the computer.
Check that the accelerometer is secured on the engine.
After retightening the accelerometer, it is essential to clear the pressure regulation adaptives using command
RZ004 Pressure regulation adaptives.
Disconnect and reconnect the accelerometer sensor to accomplish fast programming.
If the fault is still present, replace the cylinder 2 injector.

13B-45
AFTER REPAIRDeal with any faults displayed by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$061.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF028
CONTINUED
YES
Injector 3 is not faulty, the fault is in the injector 3 control circuit.
Check the continuity, insulation, and the absence of interference resistance on
the following connections:
Computer connector B track C4 Track 1 injector 3
Computer connector B track D4 Track 2, injector 3
Repair if necessary.
If the fault is still present, contact the Techline.
NOInjector 3 is faulty, replace the cylinder 3 injector.
1.DEF
NOTESNone.
Check the conformity of the injectorsfitted to the vehicle in relation to the type of vehicle and engine number (low,
high or very high injector pressure).
Check that the C2I is correctly entered on the computer.
Check the accelerometer shielding on track K1 of the brown 48-track connector B of the computer.
Check that the accelerometer is secured on the engine.
After retightening the accelerometer, it is essential to clear the pressure regulation adaptives using command
RZ004 Pressure regulation adaptives.
Disconnect and reconnect the accelerometer sensor to accomplish fast programming.
If the fault is still present, replace the cylinder 3 injector.

13B-47
AFTER REPAIRDeal with any faults displayed by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$061.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF029
CONTINUED
YES
Injector 4 is not faulty, the fault is in the injector 4 control circuit.
Check the continuity, insulation, and the absence of interference resistance on
the following connections:
Computer connector B track E4 Track 1 injector 4
Computer connector B track F4 Track 2, injector 4
Repair if necessary.
If the fault is still present, contact the Techline.
NOInjector 4 is faulty, replace the cylinder 4 injector.
1.DEF
NOTESNone.
Check the conformity of the injectorsfitted to the vehicle in relation to the type of vehicle and engine number (low,
high or very high injector pressure).
Check that the C2I is correctly entered on the computer.
Check the accelerometer shielding on track K1 of the brown 48-track connector B of the computer.
Check that the accelerometer is secured on the engine.
After retightening the accelerometer, it is essential to clear the pressure regulation adaptives using command
RZ004 Pressure regulation adaptives.
Disconnect and reconnect the accelerometer sensor to accomplish fast programming.
If the fault is still present, replace the cylinder 4 injector.

13B-78
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF121
STOREDACCELEROMETER CIRCUIT
NOTESPriorities when dealing with a number of faults :
DF001 Coolant temperature sensor circuit,
DF002 Air temperature sensor circuit,
DF098 Fuel temperature sensor circuit,
DF003 Atmospheric pressure sensor circuit.
A fault on these sensors could lead to incorrect fault finding on the accelerometer.
Conditions for applying fault finding procedures to stored faults:
The fault is present with the engine idling.
Check the conformity of the injectors fitted to the vehicle in relation to the type of vehicle and engine number
(low, high or very high pressure injector).
Check the condition and connection of the accelerometer connector.
Repair if necessary.
Check the connection and condition of the brown 48-track connector B of the computer and check the sensor
shielding on track K1.
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance on the following connections:
Sensor connector track 1 Track F1 computer connector B
Sensor connector track 2 Track G1 computer connector B
Repair if necessary.
Check that the C2I is correctly entered on the computer.
Check that the accelerometer is secured on the engine.
Disconnect and reconnect the accelerometer sensor to accomplish fast programming.
Carry out a road test followed by another check with the diagnostic tool.
If the fault is still present, replace the accelerometer.

13B-86V4 MR-372-J84-13B000$070.mif
DIESEL INJECTION
Fault finding – Conformity check13B
DDCR INJECTION
Vdiag No.: 44, 48
MAIN COMPUTER STATUSES AND PARAMETERS: (continued 3)
NOTESOnly check conformity after a full check with the diagnostic tool.
The values shown in this conformity check are given as examples.
Application conditions: Engine off, ignition on.
FunctionParameter or Status
Check or actionDisplay and notes Fault finding
Vehicle speedPR089: Vehicle
speedIndicates the vehicle speed in
mph. This parameter is
transmitted by the ABS
computer or by the vehicle
speed ECU. This signal is
transmitted to the injection
system on the multiplex
network. Test the multiplex network.
Refer to fault finding for the
ABS or the vehicle speed
ECU.
New pump
chamber filling ET637: New pump
chamber fillingCOMPLETEDIf NOT DONE, see
Replacement of components.