2011 RENAULT SCENIC engine

13B-405V9 MR-372-J84-13B450$200.mif
DIESEL INJECTION
Fault finding – Tests13B
TEST1 Exhaust system check:
Engine stopped: Check that the silencer outlet is not blocked.
Repair or replace the silencer, if necessary.
Check the seal of the exhaust manifold on the contact surface
between the turbocharger and the exhaust manifold.
Is the seal in order?Repair or replace the faulty part.
Loosen the catalytic converter on the turbocharger side.
Place a wooden block between the two parts.
Start the vehicle and check if the engine runs better.
Is the engine running normally?The exhaust pipe is not the cause of
the fault, repeat the engine fault
finding (see Customer complaints -
Fault finding chart (ALP)).
Retighten the catalytic converter.
Loosen or disconnect the intermediate chamber on the catalytic
converter side. Place a wooden block between the two parts if
necessary.
Start the vehicle and check if the engine runs better.
Is the engine running normally?Replace the catalytic converter.
Retighten the intermediate chamber.
Loosen or disconnect the silencer on the intermediate chamber
side. Place a wooden block between the two parts, if
necessary.
Start the vehicle and check if the engine runs better.
Is the engine running normally?Replace the intermediate chamber.
Replace the silencer.
YES
NO
YES
NO
YES
NO
YES
NO
YES
EDC16C36_V44_TEST1/EDC16C36_V4C_TEST1/EDC16C36_V48_TEST1/EDC16C36_V50_TEST1/EDC16C36_V54_TEST1/
EDC16C36_V58_TEST1
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-407V9 MR-372-J84-13B450$200.mif
DIESEL INJECTION
Fault finding – Tests13B
TEST2
CONTINUED 1
High pressure circuit check
Note:
Depending on the vehicle type, the best visual access will be either from
above or from below.
Visually inspect the condition of the following components:
– outlet pipe of the compressor to the turbocharging air cooler,
– outlet pipe of the turbocharging air cooler to the inlet manifold,
– inlet manifold,
– temperature and pressure sensors.
Is one of these components incorrect (disconnected, cut, bent,
pierced or kinked pipes)?
Replace the defective parts
(see MR 364 (Mégane II) or
370 (Scénic II),
Mechanical, 12B,
Turbocharging). Exhaust system check
Visually inspect the condition of the following engine sections:
– from the exhaust manifold circuit to the turbocharger turbine,
– from the turbine outlet pipe to the end of the exhaust pipe,
– from the inlet manifold to the EGR valve
– check that the temperature and pressure sensors are connected.
Do some of these components have black or white marks on them?
Run test 6: Turbocharger control solenoid valve test.
A
YES
NO
YES
NO
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-408V9 MR-372-J84-13B450$200.mif
DIESEL INJECTION
Fault finding – Tests13B
TEST3 Low pressure circuit check
HIGH PRESSURE PUMP
Check the fuel filter:
– Conformity of the fuel filter (correct part number and RENAULT filter),
– positioning and clogging condition 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 seal it with a plug.
– Connect a pipe to the fuel filter inlet and insert the other end in a clean container of approximately 5litres.
– Disconnect the diesel 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 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 pipes of the low pressure circuit and
repeat the fault finding chart fault finding or of
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
YES
A
EDC16C36_V44_TEST3/EDC16C36_V4C_TEST3/EDC16C36_V48_TEST3/EDC16C36_V50_TEST3/EDC16C36_V54_TEST3/
EDC16C36_V58_TEST3
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-410V9 MR-372-J84-13B450$200.mif
DIESEL INJECTION
Fault finding – Tests13B
TEST4 Checking the turbocharged air inlet circuit
Engine stopped:
Check the sealing of the low and high pressure air circuits (air leaks in or out, upstream/downstream of the
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 bodies, clogged, displaced, kinked, broken, pierced, cut, tightness
of the mounting bolts, etc.).
– the presence, condition and fitting of the seals,
– the presence and tightening of the clamps,
– the fitting of the turbocharger pressure sensor.
– the pipe and take-off point between the air duct and the turbocharging sensor
Carry out the necessary repairs
Checking the air filter.
Check:
– that the air filter unit inlet and outlet are not blocked,
– the condition and the assembly of the air filter unit (disconnected, broken, pierced, etc.),
– the cleanliness, conformity and the non-distortion of the filter element,
– The air flowmeter: run test 5: Air flowmeter.
Carry out the necessary repairs.
A
EDC16C36_V44_TEST4/EDC16C36_V4C_TEST4/EDC16C36_V48_TEST4/EDC16C36_V50_TEST4/EDC16C36_V54_TEST4/
EDC16C36_V58_TEST4
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-411V9 MR-372-J84-13B450$200.mif
DIESEL INJECTION
Fault finding – Tests13B
TEST4
CONTINUED
Check:
– the condition of the damper valve,
– the tightening of the mounting bolts,
– cracks in the damper valve.
Carry out the necessary repairs.
Replace if necessary.
Check that there is no leak at the exhaust manifold, in particular at the exhaust manifold/turbocharger connection.
Check the exhaust system: run test 1 Exhaust pipe check in ALP2.
Carry out the necessary repairs.
Carry out a visual inspection of the EGR circuit sealing.
Note: the operating play in the EGR heat exchanger valve shaft produces small black marks due to a slight leak
of no importance. Do not replace this part.
Replace if necessary.
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 take-off point for the turbocharging pressure sensor is not blocked.
Replace if necessary.
END OF TEST.
A
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-412V9 MR-372-J84-13B450$200.mif
DIESEL INJECTION
Fault finding – Tests13B
* 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,
– Coolant temperature: 80°C,
– Engine speed: idling,
– Air temperature between 30 and 70°C.
– Air flow measurement: 24 ± 4 kg/h.
– EGR valve OCR*: 26 ± 4%,
–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.
EDC16C36_V44_TEST5/EDC16C36_V4C_TEST5/EDC16C36_V48_TEST5/EDC16C36_V50_TEST5/EDC16C36_V54_TEST5/
EDC16C36_V58_TEST5
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-414V9 MR-372-J84-13B450$200.mif
DIESEL INJECTION
Fault finding – Tests13B
TEST8 Temperature upstream of turbine too low
Perform a complete fault finding of the injection
computer using the diagnostic tool.
Is a stored or present fault indicated by the diagnostic
tool?Apply the procedure for dealing with the
associated faults.
Run test 4 Turbocharged air inlet circuit check
Is the inlet circuit in order?
Repair then carry out another particle filter
regeneration.
Check that there are no leaks or blockages
in the exhaust pipe,
Repair if necessary
Run command SC017 Regenerate
particle filter (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 5 Air flowmeter
Is the air flow sensor correct?
Run test 6 Turbocharger control solenoid valve
check,
If the turbocharger control solenoid valve is correct, run
test 7 Turbocharger.
Is the turbocharger in order?
Apply test 10 Poor injector operation.
Are the injectors correct?
Apply test 1 Exhaust pipe check
Is the exhaust pipe in order?
Contact the Techline.
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
EDC16C36_V48_TEST8/EDC16C36_V50_TEST8/EDC16C36_V58_TEST8
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58

13B-416V9 MR-372-J84-13B450$200.mif
DIESEL INJECTION
Fault finding – Tests13B
TEST10 Incorrect injector operation
Part A: Fuel regulation balance check for each injector (individual correction):
– In the CLIP diagnostic tool, choose the Fuel circuit sub-function.
– 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 flow correction range by injector is between -5 mg/st and +5 mg/st without reaching these values.
If this has not already been carried out, check the injector connections and wiring.
– Check the connections and wiring of the engine management computer to the injectors.
– Repair if necessary.
–Check the IMA injector codes, comparing the IMA codes on the injectors (the IMA codes must be read from left
to right) and the IMA codes read in the CLIP 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).
To validate the repair, consult the Part B Confirmation of flow correction fault finding for each injector
(individual correction).
CASE No. 1: If at least one of the values is greater than or equal to + 5 mg/st
– Check the valve clearance.
– Check the status of the engine and the compressions (using the CLIP diagnostic tool or using a compression
gauge).
– If the compression test reveals a cylinder fault, carry out the necessary repairs.
– If the compression is correct, check the fitting conformity of the injector (see MR 364 (Mégane II) or 370 (Scénic
II), 13B, Diesel injection, Diesel injector: Removal - Refitting)
Ensure that each injector has only one heat protection washer.
Check the fuel regulation again for each injector (individual correction).
– Otherwise, replace the injector and check the presence of the sealing washer. Modify the IMA code using the
command SC002 Enter injector codes (see Interpretation of commands).
–Apply the Part B Confirmation of flow correction fault finding for each injector (individual correction) to
confirm the fault finding.
EDC16C36_V44_TEST10/EDC16C36_V4C_TEST10/EDC16C36_V48_TEST10/EDC16C36_V50_TEST10/EDC16C36_V54_TEST10/
EDC16C36_V58_TEST10
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58