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

13B-481
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
ALP6 Fuel system leaks
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.
IMPORTANT:
Please observe the cleanliness guidelines and safety advice.
Procedure for checking for an external leak on the fuel circuit:
Clean away traces of grease with clean thinner and wipe the part or parts concerned with cleaning cloths.
Start the engine and increase the engine temperature until the diesel fuel reaches 40/50°C.
Stop the engine and check for traces of grease on the part or parts concerned.
If this is the case, replace the part or parts concerned.
Does the priming bulb show traces of grease?
(Visual and tactile inspections)
Check the assembly of the components and
the condition of the seal at the union of the two
components, if the leak is at the seal.
Replace the part or the parts concerned.
Bleed the fuel circuit and continue the checks.
Check the counter pressure valve located on
the fuel return line, after the injectors. Does the diesel filter show traces of grease?
(Visual and tactile inspections)
Do the fuel return pipes show traces of grease?
(Visual and tactile inspections)
YES
NO
YES
NO
YES
NO
A
EDC16CP33_V18_ALP06 / EDC16CP33_V1C_ALP06 / EDC16CP33_V54_ALP06 / EDC16CP33_V20_ALP06 / EDC16CP33_V58_ALP06 /
EDC16CP33_V5C_ALP06 / EDC16CP33_V24_ALP06 / EDC16CP33_V04_ALP06 / EDC16CP33_V08_ALP06 / EDC16CP33_V44_ALP06 /
EDC16CP33_V4C_ALP06 / EDC16CP33_V34_ALP06 / EDC16CP33_V38_ALP06 / EDC16CP33_V74_ALP06 / EDC16CP33_V28_ALP06 /
EDC16CP33_V62_ALP06 / EDC16CP33_V26_ALP06 / EDC16CP33_V60_ALP06
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-492V12 MR-372-J84-13B300$180.mif
13B
*Technical Note 3419: Fault finding on the turbocharger for petrol and diesel engines. EXHAUST SYSTEM CHECK TEST1
RESOLVING MISFIRESTEST2
LOW PRESSURE CIRCUIT CHECK TEST3
TURBOCHARGED AIR INLET CIRCUIT CHECK TEST4
AIR FLOW SENSORTEST5
FUEL RETURN RAIL VALVE CHECK TEST6
VARIABLE GEOMETRY TURBOCHARGER CONTROLTEST 7: Apply
TEST 4 of
Technical Note
3419*
ROTATING PART OF TURBOCHARGERTEST 8: Apply
TEST 7 of
Technical Note
3419*
POOR INJECTOR OPERATION TEST10
TEMPERATURE UPSTREAM OF TURBINE TOO LOW TEST11
DIESEL FUEL CONFORMITY CHECK TEST12
DIESEL INJECTION
Fault finding – 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

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-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-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

13B-507V12 MR-372-J84-13B300$180.mif
DIESEL INJECTION
Fault finding – Test13B
TEST11 Temperature upstream of turbine too low
Perform a complete fault finding of the
injection computer using the diagnostic tool.
Are there any present or stored faults?Apply the procedure for dealing with the
associated faults.
Run Test 1 Exhaust system check
Is the exhaust pipe correct?
Repair then carry out another particle filter
regeneration.
Run command SC017 "Particle filter
regeneration" (see Interpretation of
commands).
If the second regeneration is successful, it is
essential to change the engine oil and replace
the oil filter.
If the second regeneration fails, contact the
Techline. Apply Test 4 Turbocharged air inlet circuit
check.
Is the inlet circuit in order?
Run Test 4 Air flowmeter
Is the air flow sensor correct?
Run Test 10 Poor injector operation
Are the injectors correct?
Contact the Techline.
YES
NO
NO
NONO
NO
NO
YES
YES
YES
YES
EDC16CP33_V18_TEST11 / EDC16CP33_V1C_TEST11 / EDC16CP33_V54_TEST11 / EDC16CP33_V20_TEST11 /
EDC16CP33_V58_TEST11 / EDC16CP33_V5C_TEST11 / EDC16CP33_V24_TEST11 / EDC16CP33_V28_TEST11 /
EDC16CP33_V62_TEST11 / EDC16CP33_V26_TEST11 / EDC16CP33_V60_TEST11
EDC16CP33
Program No.: C4
Vdiag No.: 18, 1C, 20, 24,
26, 28, 54, 58, 5C, 60, 62

13B-509V12 MR-372-J84-13B300$180.mif
DIESEL INJECTION
Fault finding – Test13B
TEST12
CONTINUED 1
Weigh the diesel fuel and note the fuel weight after subtracting the weight of the empty plastic cup and its cover.
Does the fuel weight fall between the minimum and maximum weights given in the table below?
Calculated weight (g.)
Fuel temperature (°C)
Min. weight Max. weight
821 846 13
821 846 14
820 845 15
819 844 16
819 844 17
818 843 18
817 842 19
816 841 20
816 841 21
815 840 22
814 839 23
814 839 24
813 838 25
Check the fuel temperature by immersing a thermometer in the plastic cup.
End of test. The fuel is not correct.
If the fuel weight is less than the minimum value then there is petrol
in the diesel fuel.
If the fuel weight is greater than the minimum value then there is oil
in the diesel fuel.
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).
A
NO
YESNO
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74