2012 RENAULT SCENIC Engine And Peripherals EDC16CP33 Workshop Manual

13B-497V12 MR-372-J84-13B300$180.mif
DIESEL INJECTION
Fault finding – Test13B
TEST3 Low pressure circuit check
Check the fuel filter:
– Conformity of the fuel filter (correct part number and RENAULT filter).
– Positioning and degree of clogging of the filter cartridge.
– Positioning and condition of the seals.
– If there is metal swarf in the filter:
Replace the fuel filter, bleed the circuit and continue the fault finding procedure.
Supplying the injection system with fuel from an additional tank.
This operation aims to detect possible faults in the low pressure supply system of a vehicle by replacing it entirely
with an additional tank.
Mode:
– Disconnect the diesel fuel supply pipe at the fuel filter inlet and block it with a plug.
– Connect a pipe to the fuel filter inlet and insert the other end in a clean container with a capacity of approximately
5 litres.
– Disconnect the diesel fuel return pipe at the diesel temperature sensor (pump return and injector return join), and
block it using a plug.
– Connect a transparent pipe to the union of the diesel fuel temperature sensor, and insert the other end in the
container.
– Fill the container with clean diesel fuel.
– Start the engine and let the system drain itself of its air (there must not be any air bubbles in the return pipe).
Is the customer complaint still present?If the low pressure circuit is in order, reconnect the
various low pressure circuit pipes, and repeat the
fault finding chart procedure or the procedure for
the fault that referred you to this test.
Are the low pressure circuit connections in order
and in good condition?Carry out the necessary repairs.
YES
NO
NO
A
YES
EDC16CP33_V18_TEST3 / EDC16CP33_V1C_TEST3 / EDC16CP33_V54_TEST3 / EDC16CP33_V20_TEST3 / EDC16CP33_V58_TEST3 /
EDC16CP33_V5C_TEST3 / EDC16CP33_V24_TEST3 / EDC16CP33_V04_TEST3 / EDC16CP33_V08_TEST3 / EDC16CP33_V44_TEST3 /
EDC16CP33_V4C_TEST3 / EDC16CP33_V34_TEST3 / EDC16CP33_V38_TEST3 / EDC16CP33_V74_TEST3 / EDC16CP33_V28_TEST3 /
EDC16CP33_V62_TEST3 / EDC16CP33_V26_TEST3 / EDC16CP33_V60_TEST3
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74

13B-498V12 MR-372-J84-13B300$180.mif
DIESEL INJECTION
Fault finding – Test13B
TEST3
CONTINUED
Check the condition and operation of the priming bulb. Perform repairs if necessary and continue the test.
Check the condition of all the low pressure diesel pipes from the tank to the injection pump (in particular no pinching
of pipes).
If the fault is still present with a low fuel level, check the consistency of the actual fuel level and that indicated on
the instrument panel.
The transfer pump is supplied via a Venturi pipe located underneath it.
Check that the opening of the venturi (6 mm to 8 mm in diameter) is not blocked by dirt contained in the fuel tank.
Check the priming of the low pressure diesel circuit.
Check that the fuel tank is correctly filled and that the fuel is correct (see Test 12 Diesel fuel conformity check).
If the diesel fuel is not correct:
– Replace the fuel (diesel fuel).
– Replace the fuel filter (diesel fuel).
– Bleed the low and high pressure fuel circuit (diesel fuel).
Low pressure circuit correct.
A
YES
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74

13B-499V12 MR-372-J84-13B300$180.mif
DIESEL INJECTION
Fault finding – Test13B
TEST4 Turbocharged air inlet circuit check
Engine stopped: Check the sealing (leak or air intake) of the low and high pressure air circuit (before/after
turbocharger).
Check the parts that are abnormally greasy of the circuit and reveal a lack of tightness.
Check:
– the condition and fitting of the ducts (foreign, clogged, not joined, kinked, broken, pierced, cut bodies, tightness
of the mounting bolts, etc.).
– the presence, condition and fitting of the seals.
– the present and tightening of the clamps.
– The fitting of the turbocharging pressure sensor.
– The pipes and the take-off point between the air duct and the turbocharging sensor.
Carry out the necessary repairs.
Check the air filter.
Check:
– That the inlet and outlet of the air filter unit is not blocked.
– the condition and the assembly of the air filter unit (disconnected, broken, pierced …).
– The cleanliness, the conformity and the non-distortion of the filter element.
– The air flowmeter: run Test 5 Air flowmeter.
Carry out the necessary repairs
Check:
– the condition of the damper valve,
– the tightening of the mounting bolts,
– cracks in the damper valve.
Carry out the necessary repairs.
A
EDC16CP33_V18_TEST4 / EDC16CP33_V1C_TEST4 / EDC16CP33_V54_TEST4 / EDC16CP33_V20_TEST4 / EDC16CP33_V58_TEST4 /
EDC16CP33_V5C_TEST4 / EDC16CP33_V24_TEST4 / EDC16CP33_V04_TEST4 / EDC16CP33_V08_TEST4 / EDC16CP33_V44_TEST4 /
EDC16CP33_V4C_TEST4 / EDC16CP33_V34_TEST4 / EDC16CP33_V38_TEST4 / EDC16CP33_V74_TEST4 / EDC16CP33_V28_TEST4 /
EDC16CP33_V62_TEST4 / EDC16CP33_V26_TEST4 / EDC16CP33_V60_TEST4
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74

13B-500V12 MR-372-J84-13B300$180.mif
DIESEL INJECTION
Fault finding – Test13B
TEST4
CONTINUEDTurbocharged air inlet circuit check
Check that there is no leak at the exhaust manifold, in particular at the exhaust manifold/turbocharger connection.
Check the exhaust, run Test 1 Exhaust pipe check.
Carry out the necessary repairs.
Visually check the EGR circuit sealing.
Note:
The operational clearance of the EGR exchanger flap shaft leaves slight traces of a black substance due to
inconsequential leakage. Do not replace this part.
– Check the condition of the intercooler:
– clogging,
– leaks (vehicle stationary, stabilise the engine speed between 3500 rpm and 4000 rpm and check that there are
no leaks).
Replace if necessary.
Check that the turbocharging pressure sensor take-off point is not blocked.
Carry out the necessary repairs
END OF TEST.
A
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74

13B-501V12 MR-372-J84-13B300$180.mif
DIESEL INJECTION
Fault finding – Test13B
OCR*: Opening Cyclic Ratio
TEST5 Air flowmeter
Damage to electrical components
Visual inspection: remove the flow sensor - the components should not be broken.
Replace the air flowmeter if necessary.
Oxidation of the electrical components
Visual inspection: remove the air flowmeter, there should not be any greenish deposits on the electrical
components.
Replace the air flowmeter if necessary.
Clogging of the air flowmeter
Test:
– Check the values for conformity:
– During the first 5 seconds after starting,
–PR064 Coolant temperature: 80°C.
–PR055: Engine speed: idling.
–PR059: Air temperature between 30 and 70°C.
–PR146 Inlet air flow: between 20 and 28 kg/h.
–PR220 EGR valve OCR*: between 22 and 30%.
–PR132 Air flow: between 20 and 28 kg/h.
–PR051 EGR valve position feedback: between 22 and 30%.
–PR023 Air flow difference between - 50 and + 50 mg/stroke.
– Apply the procedure for DF056 Air flow sensor circuit for the checks on the air flowmeter.
Replace the air flowmeter if necessary.
END OF TEST.
EDC16CP33_V18_TEST5 / EDC16CP33_V1C_TEST5 / EDC16CP33_V54_TEST5 / EDC16CP33_V20_TEST5 / EDC16CP33_V58_TEST5 /
EDC16CP33_V5C_TEST5 / EDC16CP33_V24_TEST5 / EDC16CP33_V04_TEST5 / EDC16CP33_V08_TEST5 / EDC16CP33_V44_TEST5 /
EDC16CP33_V4C_TEST5 / EDC16CP33_V34_TEST5 / EDC16CP33_V38_TEST5 / EDC16CP33_V74_TEST5 / EDC16CP33_V28_TEST5 /
EDC16CP33_V62_TEST5 / EDC16CP33_V26_TEST5 / EDC16CP33_V60_TEST5
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74

13B-502V12 MR-372-J84-13B300$180.mif
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

13B-503V12 MR-372-J84-13B300$180.mif
DIESEL INJECTION
Fault finding – Test13B
IMA*: Individual injector correction
TEST10 Incorrect injector operation
Part A (for VDiag 18, 04 and 44):
Fuel regulation balance check for each injector (individual correction):
– In the CLIP diagnostic tool, choose the Fuel circuit subfunction.
– With the engine idling and the fuel temperature > 50°C, view the flow correction values of each injector (individual
correction), i.e.:
– PR364 Cylinder no. 1 fuel flow correction;
– PR405 Cylinder no. 2 fuel flow correction;
– PR406 Cylinder no. 3 fuel flow correction;
– PR365 Cylinder no. 4 fuel flow correction.
The normal value for flow correction for an injector is approximately X = ±1.5 mg/stroke. This tolerance value may
increase with time, but indicates an injector / cylinder fault if it exceeds X = ±5 mg/stroke.
Check the IMA* injector codes, by comparing the IMA codes engraved on the injectors (the IMA codes are read
from left to right) and the IMA codes read with the diagnostic tool. If the IMA codes are correct, continue the fault
finding procedure, if not, enter the incorrect IMA codes using command SC002 Enter injector codes (see
Interpretation of commands).
1- If at least one of these values is X > + 5 mg/stroke
– Check the valve clearance.
– Check the condition of the engine and test the compressions. Use a compression gauge, the M9R hose end
piece, part number Mot.1772 and apply command VP036 Fuel supply inhibition (see Interpretation of
commands).
– If the compression test reveals a cylinder fault, carry out the necessary repairs.
– If the compression is correct, check the injector fitting conforms according to the procedure (see MR 402 (Vel
Satis ph2), MR 395 (Laguna II ph2), MR 364 (Mégane II ph2), MR 370 (Scénic II ph2) or MR 405 (Espace IV
ph2) Mechanical, 13B, Diesel injection, Diesel injectors: Removal - Refitting).
– Check the fuel regulation again for each injector (individual correction).
– If the customer complaint is still present, replace the injector* concerned.
– See paragraph Part C: Confirmation of flow correction fault finding for each injector, for confirmation of the
fault finding.
EDC16CP33_V18_TEST10 / EDC16CP33_V1C_TEST10 / EDC16CP33_V54_TEST10 / EDC16CP33_V20_TEST10 /
EDC16CP33_V58_TEST10 / EDC16CP33_V5C_TEST10 / EDC16CP33_V24_TEST10 / EDC16CP33_V04_TEST10 /
EDC16CP33_V08_TEST10 / EDC16CP33_V44_TEST10 / EDC16CP33_V4C_TEST10 / EDC16CP33_V34_TEST10 /
EDC16CP33_V38_TEST10 / EDC16CP33_V74_TEST10 / EDC16CP33_V28_TEST10 / EDC16CP33_V62_TEST10 /
EDC16CP33_V26_TEST10 / EDC16CP33_V60_TEST10
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74

13B-504V12 MR-372-J84-13B300$180.mif
DIESEL INJECTION
Fault finding – Test13B
TEST10
CONTINUED 1
2. If at least one of these values is X < - 5 mg/stroke
– Check the valve clearance.
– Check the level and condition of the engine oil.
– Remove the injector with the largest adjustment.
– If there is contamination via the diesel, check the condition of the cylinder concerned (cylinder, piston, valves).
– Replace the injector* concerned.
– See paragraph Part C, for confirmation of the fault finding.
3. If at least one of these values does not stabilise (20 seconds after starting):
– Check the low pressure circuit using Test 3 Low pressure circuit test.
– Check the fuel is correct by carrying out Test 12 Diesel fuel conformity check.
See paragraph Part C of Test 10, for confirmation of the fault finding.
After replacing an injector, follow the injector code programming procedure (see Replacement of components),
run SC036 Reinitialise programming and select the number of the injector replaced.
IMPORTANT:
When removing / refitting injectors, follow the cleanliness and safety instructions (see MR 395 (Laguna II ph2),
402 (Vel Satis), 405 (Espace IV Ph2), 364 (Megane II ph2), 370 (Scenic II ph2) Mechanical, 13B, Diesel
injection, Diesel injectors: Removal - Refitting).
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74