length RENAULT SCENIC 2012 J95 / 3.G Engine And Peripherals EDC16CP33 Workshop Manual

13B-18V12 MR-372-J84-13B300$030.mif
DIESEL INJECTION
Fault finding – System operation13B
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74
VI - Pre-postheating actuation
Pre/postheating control involves actuating the heater plugs and the preheating indicator light on the instrument
panel (multiplex signal).
The heater plugs are actuated by a static relay.
After the ignition is switched on, a preheating delay is activated. The length of time that the warning light is lit
depends on the coolant temperature, air temperature, atmospheric pressure and battery voltage. When the coolant
temperature is below a certain threshold, a postheating function can be used to improve the combustion stability,
and consequently engine operation (reducing unburnt particles and pollutant emissions). Postheating can last up
to5 minutes.
IMPORTANT:
There are two types of heater plug: SLOW and FAST:
SLOW plugs are identified by a black ring.
FAST plugs are identified by a white ring.
The heater plugs fitted on the vehicle must be replaced with plugs of the same type; otherwise there is
a risk of the heater plugs deteriorating which could lead to engine destruction.
Only Vdiag 20, 24, 38 and 74:
when replacing heater plugs with plugs which differ from those currently fitted on the vehicle (replacement of
SLOW plugs with FAST plugs), the computer must be configured (see Replacement of components, Replacing
heater plugs) by running command SC036 Reinitialise programming and selecting Heater plugs if this choice
is available, then following the procedure.

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DIESEL INJECTION
Fault finding – Interpretation of commands13B
VP036INHIBIT FUEL SUPPLY
NOTESThis command enables you to disable the supply to the injectors.
This command is carried out with the engine switched off, and ignition on.
This command allows the injectors to be locked, so that starting is not possible.
Command VP036 allows the engine compressions to be checked in complete safety without disconnecting the
connectors of the injectors or the TDC sensor.
Procedure to follow (cylinder no. 1 is located on the timing end):
– Remove all of the heater plugs, connect the compression gauge with the M9R flexible end piece, part no.
MOT 1772, to a cylinder.
– Position the gear lever in neutral (manual gearbox) or to position P (automatic/sequential gearbox).
– Depress the brake pedal and keep it in this position throughout the test.
– Activate command VP036.
– Attempt to start the vehicle (within 10 seconds of activating command VP036).
If the vehicle does not start, check the cylinder compressions.
Start the procedure again on another cylinder.
WARNING:
Keep the brake pedal depressed for the length of the test.
This command is inhibited automatically after 10 seconds.
EDC16CP33_V18_VP036 / EDC16CP33_V1C_VP036 / EDC16CP33_V54_VP036 / EDC16CP33_V20_VP036 / EDC16CP33_V58_VP036 /
EDC16CP33_V5C_VP036 / EDC16CP33_V24_VP036 / EDC16CP33_V04_VP036 / EDC16CP33_V08_VP036 / EDC16CP33_V44_VP036 /
EDC16CP33_V4C_VP036 / EDC16CP33_V34_VP036 / EDC16CP33_V38_VP036 / EDC16CP33_V74_VP036 / EDC16CP33_V28_VP036 /
EDC16CP33_V62_VP036 / EDC16CP33_V26_VP036 / EDC16CP33_V60_VP036
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.

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DIESEL INJECTION
Fault finding – Test13B
TEST6 Fuel return rail valve check
This test consists of creating a vacuum downstream of the anti-return valve of the injector return rail and checking
whether fuel is drawn in by the valve.
Fitting:
Remove the rail protector.
Disconnect the union of the return rail on injector 4 (on the gearbox side).
Disconnect the union downstream of the anti-return valve.
Connect the 8 mm quick-release coupling.
Connect a transparent hose (resistant to diesel, length 60 cm and internal diameter 8 mm).
Connect a manual vacuum pump.
Gradually apply a vacuum up to 0.5 bar.
If more than a cm of diesel is quickly drawn into the hose, the valve is leaking. Stop the vacuum immediately.
Replace the diesel injector fuel return rail and its overpressure valve (see MR364 (Mégane II ph2), MR370 (Scénic
II ph2), MR 395 (Laguna II ph2), MR 402 (Vel-Satis ph2), MR405 (Espace IV ph2) Mechanical, 13B, Diesel
injection, Diesel injector fuel return rail: Removal - Refitting).
Otherwise, maintain the vacuum for 1 minute.
If less than a cm of diesel is drawn into the hose, the valve of the rail is not leaking.
End of test.
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74
EDC16CP33_V18_TEST6 / EDC16CP33_V1C_TEST6 / EDC16CP33_V54_TEST6 / EDC16CP33_V20_TEST6 / EDC16CP33_V58_TEST6 /
EDC16CP33_V5C_TEST6 / EDC16CP33_V24_TEST6 / EDC16CP33_V04_TEST6 / EDC16CP33_V08_TEST6 / EDC16CP33_V44_TEST6 /
EDC16CP33_V4C_TEST6 / EDC16CP33_V34_TEST6 / EDC16CP33_V38_TEST6 / EDC16CP33_V74_TEST6 / EDC16CP33_V28_TEST6 /
EDC16CP33_V62_TEST6 / EDC16CP33_V26_TEST6 / EDC16CP33_V60_TEST6