2012 RENAULT SCENIC Air condition

13B-484
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V12 MR-372-J84-13B300$170.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP7 Rough idle
NOTESBefore analysing this customer complaint, check that there are no faults, and the
conformity (or otherwise) of the parameters and statuses, using the diagnostic tool.
If the customer complaint is not eliminated, perform the following checks.
Check the sealing and the condition of the
inlet circuit: run Test 4 Turbocharged air
inlet circuit check. Check the low
pressure circuit: run Test 3 Low pressure
circuit check. Check the engine parameters:
– Check the update of the engine management
computer calibration (last calibration).
– Check the conformity of the IMA* codes (see
Interpretation of commands, SC002 Enter injector
codes).
Check the charging circuit using Technical Note 6014A,
Charging circuit check, Alternator fault finding, 16A,
Alternator (formerly Technical Note 3455A).
– Check that the engine speed signal is correct using an
oscilloscope: no interference, broken tooth, etc.
– If not correct, check:
– The wiring.
– The flywheel position and the condition of the flywheel
teeth.
– Check the position and tightness of the engine speed
sensor. – Check the connections and wiring of the
injectors.
– Check the connections and wiring of the
engine management computer to the
injectors.
Check the high pressure circuit (external
leaks).
(see the end of the Fuel circuit external
leaks fault finding chart)
A
EDC16CP33_V18_ALP07 / EDC16CP33_V1C_ALP07 / EDC16CP33_V54_ALP07 / EDC16CP33_V20_ALP07 / EDC16CP33_V58_ALP07 /
EDC16CP33_V5C_ALP07 / EDC16CP33_V24_ALP07 / EDC16CP33_V04_ALP07 / EDC16CP33_V08_ALP07 / EDC16CP33_V44_ALP07 /
EDC16CP33_V4C_ALP07 / EDC16CP33_V34_ALP07 / EDC16CP33_V38_ALP07 / EDC16CP33_V74_ALP07 / EDC16CP33_V28_ALP07 /
EDC16CP33_V62_ALP07 / EDC16CP33_V26_ALP07 / EDC16CP33_V60_ALP07
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-491
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V12 MR-372-J84-13B300$170.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
Analysis of output for ALP9.
ALP9
CONTINUED 4
ALP
output no.Output conditions for
ALP9Cause - type of drivingRegeneration
frequencyWhat to tell the
customer?
Output 1The last 10 regeneration
attempts have failed due to
the engine cutting out.Regeneration failures
caused by engine cut-off.No regeneration
frequency analysis.Explain to the customer
the need to wait until the
end of regeneration
(warning light goes out)
before switching off the
engine.
Output 2The last 10 regeneration
attempts have failed but
not because of the engine
cutting out.Unsuitable driving
conditions.No regeneration
frequency analysis.Explain again to the
customer the driving
criteria for when the
warning light comes on.
Output 3After successful
regenerations stored in the
memory, the warning light
did not come on. No
interval can be calculated.Since the last successful
stored regenerations, the
driving conditions have not
allowed the warning light to
come on.Should be normal Vehicle correct
Output 4The interval between a
successful regeneration
and the particle filter
warning light coming on is
correct (above the lowest
possible values). The
system does not have any
irregular components.Unfavourable driving
(urban zone, underspeed,
etc.)Normal Vehicle correct
EDC16CP33
Program No.: C4
Vdiag No.: 18, 1C, 20, 24,
26, 28, 54, 58, 5C, 60, 62

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-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-506V12 MR-372-J84-13B300$180.mif
DIESEL INJECTION
Fault finding – Test13B
TEST10
CONTINUED 3
Part C:
Confirmation of flow correction fault finding for each injector (individual correction):
Clear the faults and run a test with the engine at idle speed and the fuel temperature > 50°C, check that no faults
appear on the diagnostic tool and that the correction values do not reach X = ± 5 mg/stroke to confirm the repair.
– If one or more cylinders have flow correction values for an injector which exceed X = ± 5 mg/stroke, follow the
fault finding procedure described in Part A: Fuel regulation balance check for each injector (individual) of
Test 10.
– Otherwise, follow the fault finding procedure described in Part D of Test 10.
Part D:
Injector nozzle sealing check:
Check the level and condition of the engine oil:
– If there is contamination from the diesel fuel, the leaking injector nozzle will be "greasy".
– Disconnect the preheating relay.
– Ensure that this is not caused by rising engine oil by checking the engine compression values.
– Check the condition of the heater plug: this must not be wet. If it is, change the defective injector.
– If the engine compression values are correct: locate the faulty injector by looking at the condition of the cylinders
and the pistons through the heater plug wells (greasy cylinder, overheating, signs of damage, etc.).
– If the cylinder - piston examination is not conclusive, remove the injectors and change the one with the greasy
nozzle.
– If the fault finding checks do not enable the engine to be repaired, contact the Techline.
After replacing the injector, follow the injector code programming procedure (see Replacement of components),
run SC036 Reinitialise programming, and select the number of the injector replaced.
Note:
Before replacing an injector, check for the sealing washer and its conformity (see Fault finding chart ALP4 Poor
performance).
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