2011 RENAULT SCENIC Engine And Peripherals EDC16 Workshop Manual

13B-345
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 4 Checking the turbocharged air inlet circuit
Engine stopped:
Check the sealing of the low and high pressure air circuits (air leak or intake) both upstream and 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, 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.
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 …).
– The cleanliness, conformity and the absence of deformation of the filter element.
– The air flowmeter: run Test 5 Air flowmeter.
Carry out the necessary repairs.
If the engine is equipped accordingly, check:
– that the damper valve is open (AC012 Damper valve, step B).
– the condition of the damper valve:
– the tightening of the mounting bolts,
– cracks in the damper valve.
Carry out the necessary repairs.
Replace the valve if necessary.
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 system check.
Carry out the necessary repairs.
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 the intercooler if necessary.
End of test.
EDC16_V50_TEST4/EDC16_V58_TEST4/EDC16_V5C_TEST4/EDC16_V18_TEST4/EDC16_V1C_TEST4/EDC16_V20_TEST4

13B-346
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
* OCR: Opening Cyclic Ratio
TEST 5 Air flowmeter
Impurities in the grilles:
Visual inspection: remove the flowmeter. There should be no foreign bodies on the grilles (see diagram 110734).
Do not clean the grilles using compressed air or any other procedure: this damages the sensors and
creates variations from the values displayed on the CLIP tool.
Check the sealing of the air circuit upstream of the air flowmeter:
disconnected or pierced pipes and air filter unit, seals present.
Replace the air flowmeter if necessary and clean upstream of this, if necessary.
Damage to electrical components:
Visual inspection:
– remove the flowmeter, the components should not be broken (see diagram no. 110736).
Replace the air flowmeter if necessary.
Oxidation of the electrical components:
Visual inspection:
– remove the air flowmeter, there must not be any green deposits on the electrical components.
Replace the air flowmeter if necessary.
Clogging of the air flowmeter:
Te s t :
– Check the values for conformity:
* During the first 5 seconds after starting:
– Coolant temperature: 80°C.
– Engine speed: at idle speed (750 rpm < PR055 < 850 rpm).
– Air flow measurement: 37 kg/h < PR132 < 57 kg/h.
– EGR valve OCR*: between - 10% and 0%.
* After the starting phase:
– Coolant temperature: 80°C,
– Engine speed: at idle speed (750 rpm < PR055 < 850 rpm).
– Air flow measurement: 25 kg/h < PR132 < 35 kg/h.
– EGR valve OCR*: between 10% and 40%.
– Refer to the interpretation of DF056 Air flow sensor circuit 2.DEF, for the air flowmeter checks.
Replace the air flowmeter if necessary.
EDC16_V50_TEST5/EDC16_V58_TEST5/EDC16_V5C_TEST5/EDC16_V18_TEST5/EDC16_V1C_TEST5/EDC16_V20_TEST5

13B-347
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
Contamination of the grille
Damage to the electrical sensors
End of test 5.
TEST 5
CONTINUED

13B-348
MR-372-J84-13B200$900.mif
V13
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Tests13B
TEST8 Manual clearing of the soot weight
Note: In certain cases, this procedure is to be carried out only after replacement of the particle filter or after an
After-sales regeneration of the particle filter.
– Start the engine.
– Raise the engine coolant temperature.
– Read the coolant temperature with PR064 Coolant temperature until a value greater than 65ºC is obtained.
– Accelerate the engine to 4000 rpm and maintain this speed for 5 minutes.
–After 5 minutes, release the accelerator and stop the engine.
– Switch on the ignition.
– Run command SC036 Reinitialise programming and select After particle filter replacement or After
particle filter regeneration (as appropriate).
– Switch off the ignition and wait for the diagnostic tool message (maximum time 8 minutes): Communication
lost with computer: EDC16C36, check the tool connection and computer power supply.
–Then switch on the ignition again, clear the present or stored faults from the computer memory (operation
to be carried out within 3 minutes of switching on the ignition).
EDC16_V50_TEST8/EDC16_V58_TEST8/EDC16_V5C_TEST8/EDC16_V18_TEST8/EDC16_V1C_TEST8/EDC16_V20_TEST8

13B-349
MR-372-J84-13B200$936.mif
V13
13B
DIESEL INJECTION
Fault finding – Tests
Deformed, twisted blade ("soft" foreign body)
Broken blades ("hard" foreign body)
TEST 7
CONTINUED 4
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
MR-372-J84-13B200$936.mif

13B-350
MR-372-J84-13B200$936.mif
V13
DIESEL INJECTION
Fault finding – Tests
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
TEST 9 Incorrect injector operation
Section A: 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, display the flow correction values for 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 per injector is between - 5 mg/stroke and + 5 mg/stroke 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, modify the incorrect IMA codes using command SC002 Enter injector codes (see Interpretation of
commands).
To confirm the repair, consult part B of test 9.
CASE No. 1: If at least one of these values is equal to or greater than + 5 mg/st
– Check the valve clearance.
– Check the condition of the engine and the compressions (using the Clip diagnostic tool or a compression
gauge).
– If the compression test reveals a cylinder fault, carry out the necessary repairs.
– If the compression is correct, check that the injector is fitted correctly (see MR 364 (Mégane II), 370 (Scénic II)
or 395 (Laguna II), Mechanical, 13B, Diesel injection, Diesel injector: Removal - Refitting)
In particular, check that each injector has one compression washer.
Check the fuel regulation again for each injector (individual correction).
– If not, replace the injector and check for the sealing washer. Modify the IMA code using command SC002 Enter
injector codes (see Interpretation of commands).
–Apply Part B of this test to confirm the fault finding.
EDC16_V50_TEST9/EDC16_V58_TEST9/EDC16_V5C_TEST9/EDC16_V18_TEST9/EDC16_V1C_TEST9/EDC16_V20_TEST9

13B-351
MR-372-J84-13B200$936.mif
V13
DIESEL INJECTION
Fault finding – Tests
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
TEST 9
CONTINUED 1
CASE No. 2: If at least one of these values is equal to or less than - 5 mg/st
– Check the valve clearance.
– Check the level and condition of the engine oil.
– Remove the injector with the largest correction.
– If there is diesel fuel contamination, check the condition of the cylinder concerned (cylinder, piston, valves).
Use an endoscope if possible.
– Only replace the removed injector, and modify the IMA code using command SC002 Enter injector codes
(see Interpretation of commands).
–Apply Part B of this test to confirm the fault finding.
CASE No. 3: If at least one of these values does not stabilise (20 seconds after starting)
– Check the low pressure circuit using Test 4 Low pressure circuit check.
– Check the conformity of the fuel by applying Test 11 Diesel fuel conformity check.
–Apply Part B of this test to confirm the fault finding procedure
CASE No. 4: If all the fuel flow correction values are correct (between - 5 mg/st and + 5 mg/st)
–Apply Part C of this test (Fuel return flow measurement).
IMPORTANT
When removing or refitting injectors, follow the cleanliness and safety instructions (see MR 364 (Mégane II), 370
(Scénic II) or 395 (Laguna II), Mechanical, 13B, Diesel injection, Diesel injector: Removal - Refitting).

13B-352
MR-372-J84-13B200$936.mif
V13
DIESEL INJECTION
Fault finding – Tests
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
TEST 9
CONTINUED 2
Section B: Confirmation of flow correction fault finding for each injector (individual correction):
Clear the faults and perform a test with the engine idling for at least 5 minutes and fuel temperature > 50°C.
Check that no fault appears on the CLIP diagnostic tool and that the corrective values do not reach ±5mg/
stroke to confirm the repair.
If the customer complaint is still present and the fuel flow correction values are between
-5 mg/stroke and + 5mg/stroke, apply Part A Fuel regulation balance check for each injector (individual)
of this test (Case no.4).
If one or more cylinders has an injector flow correction value in excess of ± 5 mg/stroke, apply Part A Fuel
regulation balance check for each injector (individual) of this test, as one or more injectors may be defective.
Part C: Measuring fuel return flow
1 – Fitting the tool:
This section is only to be carried out if PR063 "Fuel temperature" is higher than 50°C (see step 2 of
section C for this test).
Remove the engine undertray
Disconnect the entire fuel return pipe in accordance with the following procedure (do not remove the clips):
– press the clip,
– pull vertically on the end piece (see arrow in the diagram below) of the fuel return pipe.
IMPORTANT
The end piece is fragile. Be careful not to break it by pulling it too hard. Replace all removed clips