2011 RENAULT SCENIC Engine And Peripherals EDC16 Injection Workshop Manual

13B - 201
DIESEL INJECTION
Fault finding - Interpretation of commands13B
V10 MR-372-J84-13B150$752.mif
EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4C
AC014
DAMPER FLAP
NOTESThis command enables the damper flap function to be checked.
– Measure the resistance of the inlet flap valve solenoid valve between tracks 1 and 2.
Replace the solenoid valve if the resistance is not 46 Ω ± 3 at +25 °C.
–Check the continuity and the absence of interference resistance on the following connections:
Injection computer brown 48-track connector B track J4 Track 1 of damper flap solenoid valve
connector
+ 12 V (UPC)Track 2 damper flap solenoid valve
connector
A) Engine running at idle speed:
– Make sure that there is a vacuum pressure of: ~ 900 mb in the solenoid valve inlet hose.
Make the necessary repairs (vacuum pressure circuit conformity and seal).
B) With the vehicle ignition on, engine stopped:
– Check that the inlet flap is open.
If not, clean or replace the air vent unit.
– Disconnect the solenoid valve inlet and outlet hoses.
– Connect a vacuum pump to the inlet union and apply a vacuum pressure of ~ 900 mbar.
If there is a leak, replace the solenoid valve.
– Run command AC014.
– If the solenoid valve opens (vacuum pump pressure gauge returns to atmospheric pressure), go to step C.
– Otherwise, with the solenoid valve connected, check operation of the computer output with a voltmeter:
Voltmeter earth cabletrack 1 of the solenoid valve
Voltmeter positive leadtrack 2 of the solenoid valve
Clear any solenoid valve faults,
Run command AC014.
The voltmeter should display ten ON-OFF cycles (8.75 V then 2.5 V).
If the measurement is correct, replace the solenoid valve.
If the measurement shows is not controlled, contact the Techline.
C) Vehicle with ignition off:
– Connect a vacuum pump to the flap control diaphragm and apply a vacuum pressure of ~ 900 mbar:
– If the diaphragm does not maintain the vacuum pressure, replace the air vent unit (the diaphragm cannot be
disconnected).
– If the diaphragm maintains the vacuum pressure and the valve does not operate, clean or replace the air
vent unit.
– If the diaphragm maintains the vacuum pressure and the flap operates then operate it several times to ensure
that there is no blockage.
Check for clogging of the air vent unit and the valve, and clean if necessary.
AFTER REPAIRRepeat the conformity check from the start.
EDC16_V44_AC014/EDC16_V48_AC014/EDC16_V4C_AC014

13B - 202
DIESEL INJECTION
Fault finding - Customer complaints13B
V10 MR-372-J84-13B150$799.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4CDIESEL 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 COMMUNICATION WITH THE COMPUTER ALP 1
STARTING FAULT OR STARTING IMPOSSIBLE ALP 2
INJECTION NOISEALP 3
POOR PERFORMANCEALP 4
IRREGULAR ENGINE OPERATION ALP 5
ROUGH IDLE ALP 6
OIL LEAKS FROM THE TURBOCHARGER ALP 7
TURBOCHARGER NOISEALP 8
SMOKE FROM THE EXHAUSTALP 9
MR-372-J84-13B150$799.mif

13B-203
MR-372-J84-13B150$846.mif
V10
13B
EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4CDIESEL INJECTION
Fault finding - Fault finding chart
ALP 1 No dialogue with the computer
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, perform the following checks.
Check the conformity of the vehicle type, and the domain selected on the tool.
Check that the tool is not faulty by trying to establish dialogue with a computer on another vehicle.
Disconnect the injection computer, and check the condition of the contacts:
no oxidation, no damage to pins, etc.
Check the condition and confirmity of UPC fuse F5D 5A.
Replace it if necessary.
Check the continuity and the absence of interference resistance of the following connections:
Injection computer 48-track brown connector B track M2
Injection computer black 32-track connector A track G1
Injection computer black 32-track connector A track G4
Injection computer black 32-track connector A track H4
Injection computer black 32-track connector A track H1Track 1 UPC black PPM1 connector
Track 4 UPC grey PPH1 connector
Vehicle earth
Vehicle earth
Vehicle earth
Repair if necessary.
Check the supply to the diagnostic socket:
+ before ignition feed on track 16,
+ after ignition feed on track 1,
Earth on track 4 and 5.
Repair if necessary.
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_V44_ALP1 / EDC16_V48_ALP1 / EDC16_V4C_ALP1
MR-372-J84-13B150$846.mif

13B-204
MR-372-J84-13B150$846.mif
V10
DIESEL INJECTION
Fault finding - Fault finding chart13B
ALP 1
CONTINUED
Try to start communication with another computer on the same vehicle.
1)If dialogue is established with another computer on the same vehicle:
Contact Techline.
2)If dialogue is not established with any other computer on the same vehicle:
It may be that a faulty computer is causing interference on the multiplex network.
To locate it, carry out a process of elimination, disconnecting in turn all the computers linked to these lines
(according to wiring diagram and equipment): Airbag, ABS, UCH, instrument panel.
Try to establish dialogue after disconnecting each line:
If after disconnection:
– dialogue is successful: carry out the computer fault finding procedure and reconnect all the disconnected
components,
– it is not possible to establish dialogue: contact the Techline.
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4C

13B-205
MR-372-J84-13B150$846.mif
V10
DIESEL INJECTION
Fault finding - Fault finding chart13B
ALP 2Starting faults
(or starting impossible)
NOTESBefore dealing with this customer complaint, check that there are no faults,
and he conformity (or otherwise) of the parameters and statuses using the
diagnostic tool.
If the customer complaint is not eliminated, perform the following checks.
Is starting difficult or impossible?
difficult
Check the engine earths.
Make sure that the engine speed reaches 250 rpm when the starter motor is operated, displayed in
the parameter screen.
Ensure that the correct fuel is being used. Run test 5 Diesel fuel conformity check.
Check the conformity of the fuel filter connections.
Ensure that the fuel filter is not saturated with water.
Check there are no air bubbles between the filter and the high pressure pump.
Check the operation of the preheating unit and heater plugs with command AC001 Preheating unit.
Check the condition of the air filter (clogging).
Check the seal of the high-pressure diesel circuit, pump, pipes, unions (visual checks + odours).
Check the position of the EGR valve: jamming or mechanical seizure.
Check the consistency of the signal from the engine coolant temperature sensor.
Check that the pressure regulator is working correctly (see the interpretation of command AC011 Rail
pressure regulator).
Check the operation of the injectors (too much return leakage, clogging, seizing) referring to Component
test, Test 1 Injector Test.
Check the compression balance, according to current consumption during the starting phase
(Compression test menu on the Clip tool).
In the event of imbalance, use a compression gauge to refine the reading (see the procedure in the Workshop
Repair Manual). After the operation, clear the faults caused by disconnecting the regulator and the heater
plugs.
impossible
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16_V44_ALP2 / EDC16_V48_ALP2 / EDC16_V4C_ALP2
EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4C

13B-206
MR-372-J84-13B150$846.mif
V10
DIESEL INJECTION
Fault finding - Fault finding chart13B
ALP 2
CONTINUED
Refer to the engine
immobiliser fault finding
procedure in the UCH fault
finding.
Check the timing setting, and
the position of the high
pressure pump sprocket.
Check the cylinder
compressions.
Check the cylinder balance
using the Clip function,
Compression test physical
measurement icon.
ET003 not correct or
immobiliser warning
light permanently
illuminated
YESFrom the STATUS menu on your fault finding tool, check the conformity of
the immobiliser system: ET003 Engine immobiliser should be INACTIVE.
ET003 correct (Immobiliser code
warning light switched off)
Check the battery charge and the condition and tightness of the terminals.
Ensure that engine speed reaches 250 rpm when the starter motor is
operated. This is displayed on the parameter screen.
Check the engine earths.
Check the conformity of the inertia switch (according to equipment).
Check the presence and conformity of fuel in the tank. Run test 5 Diesel
fuel conformity check.
Check for the 12 V after relay feed on tracks G1 and M2 of connector B
on the engine management computer (via injection relay).
Check the engine fuses (and their mountings, wires and terminals).
test
Operate the starter:
Does the pressure increase in the rail:
Rail pressure = ~ 170 bar at ~ 250 rpm?
NO
Run a fault finding check on the regulator and high pressure pump by
applying the interpretation of command AC011 Rail pressure regulator.
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4C

13B-207
MR-372-J84-13B150$846.mif
V10
DIESEL INJECTION
Fault finding - Fault finding chart13B
ALP 3 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 eliminated, 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 complaint is still present, check the rail pressure (Parameter menu) and apply the interpretation
of command AC011 Rail pressure regulator.
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 (consult parameter PR018 Estimated air flow).
Check the condition of the EGR valve (clogging, blocked, seized).
If the complaint is still present, perform the injector fault finding procedure with Test 1 Injector test.
Does the injection noise occur at all engine speeds?
Carry out fault finding on the injectors with Test 1 Injector Test.
Check the condition of the injector connector and pressure regulator terminals.
Ensure that the correct fuel is being used.
Check the conformity of the air flow signal (consult the interpretation of parameter PR132 Air flow).
If the customer complaint is still present, check the rail pressure (parameter menu) and apply the interpretation
of command AC011 Rail pressure regulator.
If the injection noise occurs at transitional speed:
If the engine races during gear changes, check the conformity of the clutch switch.
When changing gear during a road test, display parameter PR017 Fuel flow. if it varies without greatly affecting
the rail pressure, perform the fault finding procedure for AC011 Rail pressure regulator.
If the fault is still present, carry out a fault finding check on the injectors (seeTEST 1).
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16_V44_ALP3 / EDC16_V48_ALP3 / EDC16_V4C_ALP3EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4C

13B-208
MR-372-J84-13B150$846.mif
V10
DIESEL INJECTION
Fault finding - Fault finding chart13B
ALP 4 Poor performance
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, perform the following checks.
IMPORTANT
In the event of the engine overheating above 11 0 ° C, the computer deliberately limits the fuel flow, and supplies
the fan assembly until the battery is completely discharged.
Is the poor performance accompanied by smoke?
YES
Check:
– That the EGR valve is not jammed in the open position.
– That the injectors are properly mounted (presence and conformity of the sealing washer).
Is the engine running on all cylinders?
NO
Check that the injectors are operating correctly. (See Test 1)
If the fault is still present
Check the conformity of the accelerator pedal position sensor, the brake pedal sensor, the atmospheric pressure
sensor and the EGR valve.
– Check the condition of the air filter.
– Check the consistency of the signal: from the flow sensor or the pressure/air temperature sensor, engine coolant
temperature sensor, fuel temperature sensor, engine speed.
No foreign bodies on the flowmeter grille (visual inspection only).
Check:
– That the diesel filter is not clogged.
– That there are no leaks in the low pressure and high pressure diesel circuits;
– that the air inlet circuit is complete (sealed and not obstructed),
– That the oil vapour rebreathing system is connected.
– The flow regulator (jammed/seized, consult the interpretation of command AC011 Rail pressure
regulator).
– The turbocharger control (jammed / seized), consult the interpretation of command
AC004Turbocharging solenoid valve,
– Check the engine compressions (cylinder compression balance with the Compression test function on
the CLIP tool).
– Check that the exhaust pipe is not blocked.
NO
YES
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
EDC16_V44_ALP4 / EDC16_V48_ALP4 / EDC16_V4C_ALP4
EDC16 INJECTION
Program No.: C1
Vdiag No: 44, 48 and 4C