2012 RENAULT SCENIC pressure

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-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-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

13B-508V12 MR-372-J84-13B300$180.mif
DIESEL INJECTION
Fault finding – Test13B
TEST12 Diesel fuel conformity check
WARNING
During this operation, it is essential to:
– refrain from smoking or bringing incandescent objects close to the work area,
– guard against petrol splashes caused by the residual pressure in the pipes,
– wear safety goggles with side guards,
– wear leaktight gloves (Nitrile type).
IMPORTANT
– To avoid any corrosion or damage, protect the areas on which fuel is likely to run.
– To prevent impurities from entering the circuit, place protective plugs on all fuel circuit components
exposed to the open air.
Preparations:
Weigh an empty 1300 ml plastic cup (part no. 77 11 171 413) with its cover (part no. 77 11 171 416) using
electronic scales such as those used in body paint workshops (example: PANDA part no. 77 11 224 995). Record
the weight of the empty plastic cup.
This type of plastic cup is used to prepare paint.
Remove 1 litre of fuel from the diesel fuel filter outlet (see MR395 (Laguna II ph2) or MR402 (Vel Satis ph2)
or MR405 (Espace IV ph2) or MR364 (Mégane II ph2) or MR370 (Scénic II ph2), Mechanical, 19C, Tank, Fuel
tank: Draining), using a pneumatic transfer pump (part no. 634-200) and place it in the 1300 ml plastic cup.
Cover the plastic cup with its cover and let it settle for approximately2 minutes.
Is the fuel cloudy or does it
separate into two parts?Presence of water in diesel fuel, the fuel is not compliant.
Drain the fuel circuit, including the tank (see MR395 (Laguna II
ph2) or MR402 (Vel Satis ph2) or MR405 (Espace IV ph2) or
MR364 (Mégane II ph2) or MR370 (Scénic II ph2), Mechanical,
19C, Tank, Fuel tank: Draining).
YES
A
NO
EDC16CP33_V18_TEST12 / EDC16CP33_V1C_TEST12 / EDC16CP33_V54_TEST12 / EDC16CP33_V20_TEST12 /
EDC16CP33_V58_TEST12 / EDC16CP33_V5C_TEST12 / EDC16CP33_V24_TEST12 / EDC16CP33_V04_TEST12 /
EDC16CP33_V08_TEST12 / EDC16CP33_V44_TEST12 / EDC16CP33_V4C_TEST12 / EDC16CP33_V34_TEST12 /
EDC16CP33_V38_TEST12 / EDC16CP33_V74_TEST12 / EDC16CP33_V28_TEST12 / EDC16CP33_V62_TEST12/
EDC16CP33_V26_TEST12 / EDC16CP33_V60_TEST12
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74