2011 RENAULT SCENIC Engine And Peripherals EDC16 Workshop Manual

13B-337
MR-372-J84-13B200$828.mif
V13
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP 11 Exhaust fumes
Run TEST 2 Air line at the turbocharger.
Run TEST 6 Turbocharger control solenoid valve check.
Is the vehicle equipped with a particle filter?
NO YES
Start the engine and warm it up at idle speed for 10 minutes.
IMPORTANT
If the air filter was removed previously, refit it before starting the
engine (risks foreign matter entering the air inlet circuit).
Perform several rapid and brief accelerations under no load.
Note:
The presence of smoke is often normal.
The quantity, density, colour and persistence of the smoke are the
important factors.
Is the exhaust outlet producing abnormal smoke?
YES NO
Refer to TEST 7 Turbocharger. The turbocharger is not faulty. There is probably
another fault in the engine. Refer to the
corresponding TEST or fault finding chart
Perform the fault finding of the
"particle filter" function, refer to the
TESTS or corresponding ALP
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16_V50_ALP11/EDC16_V58_ALP11/EDC16_V5C_ALP11/EDC16_V18_ALP11/EDC16_V1C_ALP11/EDC16_V20_ALP11

13B-338
MR-372-J84-13B200$864.mif
V13
13B
DIESEL INJECTION
Fault finding – Tests
*Technical Note 3419: Fault finding on the turbocharger for petrol and diesel engines Exhaust system checkTEST 1
Turbocharger air chainTEST 2
Low pressure circuit check TEST 3
Checking the turbocharged air inlet circuit TEST 4
Air flowmeterTEST 5
Turbocharger control solenoid valve testTEST 6: Apply TEST
4 of Technical Note
3419*
TurbochargerTEST 7: Apply TEST
7 of Technical Note
3419*
Manual clearing of the soot weight TEST 8
Incorrect injector operation TEST 9
Temperature upstream of turbine too low TEST 10
Diesel fuel conformity check TEST 11
Incorrect operation of the overpressure valve TEST 12
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
MR-372-J84-13B200$864.mif

13B-339
MR-372-J84-13B200$900.mif
V13
13B
DIESEL INJECTION
Fault finding – Tests
TEST 1 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?
YES
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?
YES
A
NORepair or replace the faulty part.
NOThe exhaust pipe is not the cause
of the fault, continue with the
engine fault finding procedure (see
Customer complaints).
EDC16_V50_TEST1/EDC16_V58_TEST1/EDC16_V5C_TEST1/EDC16_V18_TEST1/EDC16_V1C_TEST1/EDC16_V20_TEST1 EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
MR-372-J84-13B200$900.mif

13B-340
MR-372-J84-13B200$900.mif
V13
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Tests13B
TEST 1
CONTINUED
Retighten the catalytic converter.
Loosen or uncouple the particle filter 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 particle filter.
Loosen or uncouple the silencer on the particle filter side
(see MR 364 (Mégane II), 370 (Scénic II) or 395 (Laguna
II), Mechanical, 19B Exhaust, Parts and consumables
for repair).
Start the vehicle and check if the engine runs better.
Is the engine running normally?Replace the particle filter (see MR
364 (Mégane II), 370 (Scénic II) or
395 (Laguna II), Mechanical, 19B
Exhaust, Particle filter, Removal –
Refitting).
After any operation on the particle
filter, reinitialise the parameters.
Run command SC036 Reinitialise
programming and select After
particle filter replacement.
Check the weight of soot: if PR383
Weight of soot in the particle filter
≥ 1 g. Apply the procedure for test 8
Manual clearing of the soot weight.
Replace the silencer.
A
YES
NO
YES
NO
YES

13B-341
MR-372-J84-13B200$900.mif
V13
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Tests13B
TEST 2 Turbocharger air chain
Check for the air filter
Check the replacement frequency for the air filter in 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?
YES NO
Check the condition of the air filter
Visually inspect the condition of the filter section of
the air filter.
Is either the air filter or its seal damaged?
Is the air filter clogged (does it contain a lot of
impurities)?
NO
Low pressure circuit check
Note:
According to the vehicle type, maximum visual
access will either be from above or from below.
Visually inspect the condition of the following
components:
– fresh air inlet scoop on the front end panel of the
vehicle,
– air filter air inlet pipe,
– filter air pipe up to the compressor inlet,
– air flowmeter mountings.
Is one of these components incorrect
(disconnected, cut, bent, pierced or kinked
pipes)?
NO
YESReplace the air filter (see MR 364
(Mégane II), 370 (Scénic II) or 395
(Laguna II), Mechanical, 12A, Fuel
mixture, Air filter, Removal –
Refitting).
YESReplace the defective parts (see MR 364
(Mégane II), 370 (Scénic II) or 395
(Laguna II), Mechanical, 12B,
Turbocharging).
EDC16_V50_TEST2/EDC16_V58_TEST2/EDC16_V5C_TEST2/EDC16_V18_TEST2/EDC16_V1C_TEST2/EDC16_V20_TEST2

13B-342
MR-372-J84-13B200$900.mif
V13
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Tests13B
TEST 2
CONTINUED 1
High pressure circuit check
Note:
According to the vehicle type, maximum visual
access will either be from above or from below.
Visually inspect the condition of the following
components:
– outlet pipe of the compressor to the turbocharging
air cooler,
– turbocharging air cooler outlet pipe at inlet
manifold,
– inlet manifold,
– temperature and pressure sensors.
Is one of these components incorrect
(disconnected, cut, bent, pierced or kinked
pipes)?
NO
Exhaust system check
Visually inspect the condition of the following engine
parts:
– the exhaust manifold circuit to the turbocharger
turbine,
– the turbine outlet pipe to the end of the exhaust
pipe,
– 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?
NO
Run test 6 Turbocharger control solenoid valve check.
YES
Replace the defective parts (see
MR 364 (Mégane II), 370 (Scénic
II) or 395 (Laguna II), Mechanical,
12B, Turbocharging).
YES

13B-343
MR-372-J84-13B200$900.mif
V13
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Tests13B
TEST 3 Low pressure circuit check
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 tube to the fuel filter inlet and insert the other end into a clean container which is approximately
5 litres in volume.
– Disconnect the diesel fuel return pipe at the pump return and injector return joint and seal it with a plug.
– 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?
NO
YES
Are the low pressure circuit connections in order
and in good condition?
YES NO
If the low pressure circuit is in order, reconnect the various
pipes making up the low pressure circuit and repeat the
fault finding procedure in the fault finding chart or for the
fault that referred you to this test.
Carry out the necessary repairs.
EDC16_V50_TEST3/EDC16_V58_TEST3/EDC16_V5C_TEST3/EDC16_V18_TEST3/EDC16_V1C_TEST3/EDC16_V20_TEST3

13B-344
MR-372-J84-13B200$900.mif
V13
DIESEL INJECTION
Fault finding – Tests
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
TEST 3
CONTINUED
Check the condition of the priming bulb, and that it is working properly.
Perform repairs if necessary and continue the test.
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 valve located beneath it.
Check that the opening of the venturi (6 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 the conformity of the fuel used by running test 11 Diesel fuel conformity check.
If the diesel fuel is not correct:
– Replace the diesel fuel.
– Change the diesel filter.
– Bleed the low and high pressure diesel circuit.
Low pressure circuit correct.
END OF TEST3.