RENAULT SCENIC 2009 J84 / 2.G Engine And Peripherals EDC16 Workshop Manual

DIESEL INJECTION
Fault finding – Interpretation of commands13B
13B -221V3 MR-372-J84-13B250$765.mif
EDC16
PROGRAM No: C1
Vdiag No.: 51
AC195
ELECTRIC COOLANT PUMP
NOTESThis command allows you to check the operation of the electric coolant pump.
Test the electric coolant pump relay (A 20A) and check it is operating correctly.
Check the injection computer connections.
Repair if necessary.
Check the continuity between the following connections: Tracks B1 and B5 of the coolant pump relay mounting.
If the checks yield the correct results, check the continuity and absence of interference resistance on the
following connections:
Injection computer brown 48-track connector B,
track H4Track B2 of the coolant pump relay mounting
Injection supply relay mounting, Track 5Track B1 of the coolant pump relay mounting
Injection supply relay mounting, Track 5Track B5 of the coolant pump relay mounting
Turbocharger bearing coolant pump connector,
Track 1Track B3 of the coolant pump relay mounting
Turbocharger bearing coolant pump connector,
Track 2Earth
Repair if necessary.
If the fault is still present, contact the Techline.
EDC16_V51_AC195

DIESEL INJECTION
Fault finding – Customer complaints13B
13B - 222V3 MR-372-J84-13B250$810.mif
EDC16
PROGRAM NO.: C1
Vdiag No.: 51DIESEL INJECTION
Fault finding – Customer complaints
NOTESBefore dealing with 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, then proceed according to the
corresponding fault finding chart.
NO DIALOGUE WITH ENGINE MANAGEMENT COMPUTER ALP1
STARTING FAULT OR STARTING IMPOSSIBLE ALP2
INJECTION NOISEALP3
POOR PERFORMANCEALP4
IRREGULAR ENGINE OPERATION ALP5
EXTERNAL LEAKS FROM THE FUEL CIRCUIT ALP6
ROUGH IDLEALP7
OIL LEAKS FROM THE TURBOCHARGER ALP8
TURBOCHARGER NOISESALP9
SMOKE FROM THE EXHAUSTALP10
MR-372-J84-13B250$810.mif

DIESEL INJECTION
Fault finding – Fault Finding Chart13B
13B -223V3 MR-372-J84-13B250$855.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51DIESEL INJECTION
Fault finding – Fault Finding Chart
ALP1 No dialogue with engine management computer
Try to establish dialogue with a computer on another vehicle to make sure that the diagnostic tool is not faulty.
Check the battery voltage and make the necessary adjustments to obtain a correct voltage (9.5 V < Battery
voltage < 17.5 V).
If the tool is not at fault, and dialogue cannot be established with any other computer on the same vehicle, the cause
could be a faulty computer interfering on the multiplex network.
disconnect the engine management computer.
try to establish dialogue with another computer.
if the fault is still present, reconnect the computer and proceed by elimination by successively disconnecting all the
following computers (according to wiring diagram and equipment): air conditioning, airbag, abs and esp, uch,
instrument panel, central communication unit, proximity sensor.
Try to establish dialogue after disconnecting each line:
if, after a disconnection, you manage to establish dialogue, perform the fault finding procedure for the relevant
computer.
perform fault finding on the multiplex network using the diagnostic tool.
Check for the presence and the condition of the injection fuses on the UPC, and/or the engine fuse box.
check the connection of the computer connectors and the condition of its connections.
Check the injection computer earths (quality, oxidation, earth bolts secure on the battery terminal).
Check that the supply to the computer is correct:
Earth on tracks H1, G4 and H4 of black 32-track connector A.
+ after ignition feed on track D1 of black 32 track connector A.
Check that the power supply to the diagnostic socket is correct:
+ before ignition feed on track 16.
+ after ignition feed on track 1.
Earth on tracks 4 and 5.
If dialogue has still not been established after these checks, contact the techline.
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16_V51_ALP1

DIESEL INJECTION
Fault finding – Fault Finding Chart13B
13B -224V3 MR-372-J84-13B250$855.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
ALP2 starting difficult or impossible
NOTESBefore dealing with 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 ironed out, perform the following checks:
Is it difficult or impossible to start the engine?impossible(Go to
continued 2)
difficult
PART A:
Check the engine earths.
Ensure that engine speed reaches 250 rpm with the starter motor, as displayed on the parameter screen
(PR055 Engine speed).
If the engine speed is less than 250 rpm, refer to Technical Note 6014A, Checking the charging circuit, Starter
motor fault finding, Starter motor.
If the engine speed under CLIP is zero and the engine is running, measure the resistance of the engine speed
sensor between terminals A and B of its black connector. If the winding resistance is not between 510 Ω and
850 Ω at an engine temperature of 20˚C, replace the engine speed sensor.
Check the continuity of the following connections:
–engine computer, connector B track D1 track A of the engine speed sensor
–engine computer, connector B track C1 track B of the engine speed sensor
Check that the engine earthing is in order (oxidation, tightness, etc.).
Check the mounting, air gap and condition (overheating) of the sensor.
Replace if necessary.
Check the synchronisation of the camshaft sensors and the engine speed sensors with the display of ET238
Synchronisation.
If synchronisation is not active, refer to the checks described in DF195 Camshaft/engine speed consistency.
check the fuel circuit sealing.
If the fault is still present, see DF053 Rail pressure regulation function 2.def, stage 4.
AFTER REPAIRcarry out a road test followed by a complete check with the diagnostic tool.
EDC16_V51_ALP2

DIESEL INJECTION
Fault finding – Fault Finding Chart13B
13B -225V3 MR-372-J84-13B250$855.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
ALP2
CONTINUED 1
Check that the heater plugs are actuated using the AC001 Preheating unit command.
Check the sealing and condition of the inlet circuit: run test 3 Turbocharged air inlet circuit check and follow the
fault finding procedure.
Check that there are no foreign bodies on the flowmeter grille: run test 4 Air flowmeter and follow the fault finding
procedure.
Check that the exhaust is not blocked: run test 1 Exhaust pipe check and follow the related fault finding
procedure.
Check the consistency of the signal from the engine coolant temperature sensor.
Check the pressure regulator is working properly (see command AC011 Rail pressure regulator).
Check the operation of the injectors (excessive return leak, clogging, seizing): run test 8 Poor injector operation.
Check the engine timing (and the position of the high pressure pump sprocket).
Check the balance of the compressions, according to the power consumption during the starting phase
(Compression test menu on the CLIP Technic tool).
If you do not have the CLIP Technic or if there is an imbalance, use a compression gauge to get an accurate
measurement.
after the operation, clear the faults caused by disconnecting the regulator and the heater plugs.
End of part A
AFTER REPAIRcarry out a road test followed by a complete check with the diagnostic tool.

DIESEL INJECTION
Fault finding – Fault Finding Chart13B
13B -226V3 MR-372-J84-13B250$855.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
ALP2
CONTINUED 2
Is there any diesel in the tank?
YES
Does the starter motor work properly?
(Check an engine speed
> ~ 250 rpm is obtained with the starter motor,
PR055 Engine speed)
YES
Using the diagnostic tool, check the conformity of the
immobiliser: ET003 Immobiliser must be
INACTIVE.
ET003 not
correct or
immobiliser warning
light permanently
illuminatedET003 correct (immobiliser
code warning light off)
Consult the fault finding procedure
for the immobiliser.
NOFill the tank with diesel fuel.
Bleed the low and high pressure diesel
circuit.
NOConsult Technical Note 6014A,
Checking the charging circuit, 16A,
Starter fault finding, Starter.
Continue the fault finding procedure with Part A of this fault finding
chart.
AFTER REPAIRcarry out a road test followed by a complete check with the diagnostic tool.

DIESEL INJECTION
Fault finding – Fault Finding Chart13B
13B -227V3 MR-372-J84-13B250$855.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
ALP3 Injection noise
NOTESBefore dealing with 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 ironed out, perform the following checks:
If the injection noise occurs after starting from cold:
Check the low pressure diesel circuit priming.
Check the fuel heater supply.
Check the operation of the preheating system.
Check that fuel and engine temperatures are consistent.
If the injection noise occurs at idle speed:
Check the condition of the injector connector and pressure regulator terminals.
Check the conformity of the air flow signal: use fault finding procedures: PR132 Air flow or run test 3
Turbocharged air inlet circuit check.
If the complaint is still present, perform the injector fault finding procedure: run test 8 Poor injector operation.
does the injection noise occur at all engine speeds?
Run fault finding on the injectors: run test 8 Incorrect injector operation.
Check the condition of the injector connector and pressure regulator terminals.
Check the conformity of the fuel used, apply test 10 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.
Check the conformity of the air flow signal: use the interpretation of the fault finding procedure PR132 Air flow.
If the customer complaint is still present:
Run command AC011 Rail pressure regulator.
Then apply the conformity check to confirm:
–the conformity of the fuel pressure between PR008 Rail pressure setpoint and PR038 Rail Pressure,
–the conformity of the pump fuel flow between PR157 Fuel flow setpoint and PR017 Fuel flow.
If the fault is still present, contact the Techline.
AFTER REPAIRcarry out a road test followed by a complete check with the diagnostic tool.
EDC16_V51_ALP3

DIESEL INJECTION
Fault finding – Fault Finding Chart13B
13B -228V3 MR-372-J84-13B250$855.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
ALP4 Poor performance
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 ironed out, perform the following checks:
IMPORTANT
In the event of the engine overheating above 119˚C, the computer will voluntarily limit the fuel flow
(overheating warning light comes on from 115˚C).
–Please observe the cleanliness guidelines and safety advice.
Is the poor performance accompanied by smoke?
YES
Check:
–The conformity of the fuel used: apply test 10 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.
–The conformity of the assembly of the injectors (presence and conformity of the sealing washer).
Checking procedure:
–Take a straightedge approximately 40 cm long and place it on the 4 injectors. The straightedge should rest on
the 4 injectors.
–If 1 injector protrudes, remove the injector and check that the washer is correct.
–If one injector does not touch the straightedge (clearance of more than 1 mm), remove the injector and check
that the washer is present.
–Clean the injector well and the injector, refit the injector with its correct sealing washer.
The sealing and condition of the inlet circuit: apply test 3 Turbocharged air inlet circuit check.
–The condition of the air flowmeter: apply test 4 Air flowmeter.
–The turbocharger: apply test 9 Air line at the turbocharger, then test 5 Turbocharger control solenoid valve
check and test 6 Turbocharger.
check that the turbocharging pressure follows the increase in engine speed and that the loop difference with the
turbocharging pressure is low.
Otherwise, replace the turbocharger.
NO
AFTER REPAIRcarry out a road test followed by a complete check with the diagnostic tool.
EDC16_V51_ALP4

DIESEL INJECTION
Fault finding – Fault Finding Chart13B
13B -229V3 MR-372-J84-13B250$855.mif
ALP4
CONTINUED
Is the engine running on all cylinders?
NO
Check the operation of the injectors: apply test 8 Incorrect injector
operation.
If the fault is still present
Check the conformity of the accelerator pedal position sensor, the brake pedal sensor, the atmospheric pressure
sensor, the exhaust gas recirculation valve and the damper valve.
–Check the consistency of the signal: of the air flowmeter, of the engine coolant temperature sensor, of the fuel
temperature sensor and of the engine speed.
Check the connections, continuity and absence of interference resistance on the air flow sensor (apply DF056 Air
flow sensor circuit, 2.def), the engine coolant temperature sensor (apply DF001 Coolant circuit, 1.def), and the
engine speed (apply DF195 Camshaft sensor/engine speed consistency, 2.def).
Check: – That the diesel filter is not clogged (for the test, see DF053 Rail pressure regulation function
2.def).
–That there are no leaks on the high and low pressure diesel circuits: apply test 3 Turbocharged
air inlet circuit check.
–That the oil vapour rebreathing system is connected.
–The flow regulator (blocked/seized, apply the interpretation for command: AC011 Rail pressure
regulator).
–Check the timing setting (and the position of the high pressure pump sprocket) (see MR 364 (MEGANE II) or
370 (SCENIC II), Mechanical, 11A, Top and front of engine).
–Check the cylinder compressions (balance of the cylinder compressions with the Compression test function
on the CLIP Technic diagnostic tool).
–Measure the engine compressions using the special tool.
If the fault is still present, contact the Techline.YES
EDC16
PROGRAM No.: C1
Vdiag No.: 51
AFTER REPAIRcarry out a road test followed by a complete check with the diagnostic tool.

DIESEL INJECTION
Fault finding – Fault Finding Chart13B
13B -230V3 MR-372-J84-13B250$855.mif
EDC16
PROGRAM No.: C1
Vdiag No.: 51
ALP5 Irregular engine operation
NOTESBefore dealing with 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 ironed out, perform the following checks:
If the engine races during gear changes, check, if there is a floor carpet, that this is not blocking the accelerator
pedal, the brake pedal or 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 terminals A and B of its black connector.
If the winding resistance is not between 510 Ω and 850 Ω at an engine temperature of 20˚C, replace the engine
speed sensor.
Check the continuity of the following connections:
–engine management computer, connector B track B1 track A of the engine speed sensor
–engine computer, connector B track C1 track B of the engine speed sensor
Check the conformity of the engine earths (oxidation, tightness, etc.).
Check the mounting, the air gap (check that the engine speed sensor - flywheel gap is 0.5 to 1.8 mm) and the
condition of the sensor (heating).
Replace if necessary.
Check the low pressure circuit.
–Check the pressure regulation solenoid valve by applying section B of the Rough idle fault finding chart.
~ 1600 bar with full load on the accelerator.
–Apply the procedure for checking the air flow; see conformity check.
–Check the turbocharger: apply test 9 Air line at the turbocharger, then test 5 Turbocharger control solenoid
valve check and test 6 Turbocharger.
–Apply the procedure for checking the hydraulic circuit see conformity check.
If the fault is still present:
–Check the balance of the cylinders using the CLIP Technic function, Compression test physical measurements
icon.
–Check the cylinder compressions if necessary using the special tool.
AFTER REPAIRcarry out a road test followed by a complete check with the diagnostic tool.
EDC16_V51_ALP5