2011 RENAULT SCENIC fuel pressure

13B-388
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
V9 MR-372-J84-13B450$190.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP5 Irregular engine operation
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.
If the engine races during gear changes, if there is a floor carpet, check that this is not blocking the accelerator
pedal, the brake pedal and the clutch pedal, then check the conformity of the clutch switch and the conformity of
the accelerator pedal sensor when the pedal is released.
Measure the resistance of the engine speed sensor between the following connections:
– Connection code 3BG,
– Connection code 3BL,
of component 149.
Replace the sensor if the resistance is not 200 Ω to 270 Ω at +20°C
Check the continuity of the following connections:
– Connection code 3BG,
– Connection code 3BL,
between components120 and 149.
Check the conformity of the engine earths (oxidation, tightness, etc.).
Check the mounting and condition (overheating) of the sensor.
Replace if necessary.
Check the low pressure circuit, run test 3 Low pressure circuit check.
Apply the air flow test procedure (see Interpretation of statuses and Interpretation of parameters).
Check the turbocharger, apply the following tests:
– test 2: Air path at the turbocharger,
– test 6: Turbocharger control solenoid valve check,
– test 7: Turbocharger.
Test the high pressure fuel circuit:
Run scenario SC035 High pressure fuel circuit fault finding (see Interpretation of commands).
If the customer complaint is still present, contact Techline.
EDC16C36_V44_ALP05/EDC16C36_V4C_ALP05/EDC16C36_V48_ALP05/EDC16C36_V50_ALP05/EDC16C36_V54_ALP05/
EDC16C36_V58_ALP05EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-389
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
V9 MR-372-J84-13B450$190.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP6 External leaks from the fuel circuit
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.
Bleed the fuel circuit and continue the checks.
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
A
EDC16C36_V44_ALP06/EDC16C36_V4C_ALP06/EDC16C36_V48_ALP06/EDC16C36_V50_ALP06/EDC16C36_V54_ALP06/
EDC16C36_V58_ALP06EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-390
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
V9 MR-372-J84-13B450$190.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP6
CONTINUED
Does the high pressure pump show traces of
grease? (Visual and tactile inspections)Location of the leak: Where does the leak
appear?
On the component
Do the high pressure pipes and the injector rail
show traces of grease? (Visual and tactile
inspections)If the leak is on the component, replace this
and the high pressure pipe(s) at the same
time as the component.
on theunion/join
Do the injectors show traces of grease? (Visual
and tactile inspections)– If the leak is on the join of a high pressure pipe
and the component, remove the high pressure
pipe and perform a visual inspection of the
unions: if you find damaged unions, change
the faulty component and the high pressure
pipe(s) removed at the same time as the
component.
– For safety reasons, high pressure pipes must
not be refitted. End of fault finding procedure
Reminder:
Do not replace the rail, pump or injector unless the union is found to be damaged during the visual inspections.
Bleed the fuel circuit and continue the checks.
A
YES
NO
YES
YES
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-391
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
V9 MR-372-J84-13B450$190.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 condition of the inlet circuit by running Test 4 Turbocharged air circuit check.
Check the low pressure circuit
check the engine parameters:
– Check the update of the engine management computer calibration (last calibration).
– Check the conformity of the IMA codes (using the Identification screen on the Clip diagnostic tool).
– Check the charging circuit (see Technical Note 6014A Checking the charging circuit)
– To check the conformity of the engine speed signal, check:
– The wiring.
– The flywheel position and the condition of the flywheel teeth.
– The position and tightness of the engine speed sensor.
– Check the fuel flow correction from station to station, run Test 10 Poor injector operation.
Check the connections and wiring of the injectors.
Check the connections and wiring of the engine management computer to the injectors.
Repair if necessary.
A
EDC16C36_V44_ALP07/EDC16C36_V4C_ALP07/EDC16C36_V48_ALP07/EDC16C36_V50_ALP07/EDC16C36_V54_ALP07/
EDC16C36_V58_ALP07EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-392
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
V9 MR-372-J84-13B450$190.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP7
CONTINUED
Check the high pressure circuit (external leaks) (see the end of ALP6 Fuel circuit external leaks)
Check the timing setting (and the position of the high pressure pump pinion)
Check the lower engine:
– Check the compressions using the CLIP diagnostic tool, use command VP036 Fuel supply inhibition.
– Only check the engine stand if there is noise or excessive vibration when idling.
If the checks are correct, contact the Techline.
A
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-404V9 MR-372-J84-13B450$200.mif
13B
*Technical Note 3419: Fault finding on the turbocharger for petrol and diesel enginesExhaust system check: TEST 1
Air line at the turbocharger TEST 2
Low pressure circuit check TEST 3
Checking the turbocharged air inlet circuit TEST 4
Air flow sensorTEST 5
Turbocharger control solenoid valve testTEST 6:
Run TEST 4 of
Technical Note 3419*
TurbochargerTEST 7:
Run TEST 7 of
Technical Note 3419*
Temperature upstream of turbine too low TEST 8
High pressure fuel circuit test TEST 9
Incorrect injector operation TEST 10
Diesel fuel conformity check TEST 11
Manual clearing of weight of soot TEST 12
DIESEL INJECTION
Fault finding – Tests
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-406V9 MR-372-J84-13B450$200.mif
DIESEL INJECTION
Fault finding – Tests13B
TEST2 Turbocharger air chain
Check for the air filter
Check the replacement interval of the air filter on the maintenance booklet.
Compare the part numbers of the air filter fitted to the vehicle and that of the air filter recommended by the
manufacturer.
Check the air filter direction of fitting.
Is the air filter fitted to the vehicle correct?
Check the condition of the air filter
Visually inspect the condition of the filtering section of the air
filter.
Is either the air filter or its seal damaged?
Is the air filter fouled (does it contain a lot of impurities)?Replace the air filter (see MR 364
(Mégane II) or 370 (Scénic II),
Mechanical, 12A, Fuel mixture, Air
filter, Removal - Refitting).
Low 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:
– fresh air inlet scoop on the front panel of the vehicle,
– air inlet pipe to the air filter,
– air pipe of the filter until the compressor inlet,
– mountings of the air flowmeter.
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 systems, 12B,
Turbocharging).
YESNO
YES
NO
YES
NO
A
EDC16C36_V44_TEST2/EDC16C36_V4C_TEST2/EDC16C36_V48_TEST2/EDC16C36_V50_TEST2//EDC16C36_V54_TEST2/
EDC16C36_V58_TEST2
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