2011 RENAULT SCENIC ABS

13B-369
AFTER REPAIRRepeat the conformity check in the interpretation of statuses and parameters
V9 MR-372-J84-13B450$170.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
AC011RAIL PRESSURE REGULATOR
NOTESPerform this fault finding procedure:
– following interpretation of an unresolved fault
– following an inconsistency recorded in the parameters,
– following a customer complaint (starting problems, engine speed instability, injection
noise).
Ignition on and engine stopped.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
Step 1
Check the continuity and absence of interference resistance on the following connections:
– Connection code 3HI between components 1105 and 120.
– Connection code 3FB between components 1105 and 983.
Run command AC011. If there is a slight whistling noise and clicking from the pressure regulator, go to step 2,
otherwise, check that the computer output stage is operating correctly:
Vehicle under + after ignition feed, clear the faults displayed by the diagnostic tool.
With the voltmeter in the direct current position:
With the pressure regulator connected, connect the voltmeter earth lead to connection 3HI of component 1105
and the positive lead to connection 3FB.
Run command AC011; the voltmeter should display four successive voltages of 2.2 V ± 0.2 V.
If the measurement is not correct, contact the Techline.
STEP 2
EDC16C36_V44_AC011/EDC16C36_V4C_AC011/EDC16C36_V48_AC011/EDC16C36_V50_AC011/EDC16C36_V54_AC011/
EDC16C36_V58_AC011EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-371
AFTER REPAIRRepeat the conformity check in the interpretation of statuses and parameters
V9 MR-372-J84-13B450$170.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
AC012DAMPER VALVE
NOTESCarry out this interpretation:
– after DF226 Damper valve
– or after a customer complaint (starting faults, poor performance).
Ignition on and engine stopped.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
Check the continuity, insulation and absence of interference resistance on the following connections:
– Connection code 3VN,
– Connection code 3VM,
between components 1461 and 120.
Check for +12 V on connection 3FB of component 1461.
Check for earth on connectionNT of component1461.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
With the vehicle ignition on, and the engine stopped:
Check that the damper valve is open.
If not, clean or replace the damper valve.
Actuate the valve using command AC012 and check the damper valve travel and the rest position of the valve.
Check the operation of the computer output stage with a voltmeter:
Actuate the valve with command AC012.
Positive lead to connection3FB and negative lead to connection3VN of component1461.
The voltmeter should display three cycles of ON-OFF (12.5 V then return to 0V).
If the measurement is correct, replace the damper valve.
If the measurement does not show any operation, contact the Techline.
EDC16C36_V44_AC012/EDC16C36_V4C_AC012/EDC16C36_V48_AC012/EDC16C36_V50_AC012/EDC16C36_V54_AC012/
EDC16C36_V58_AC012EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-372
AFTER REPAIRRepeat the conformity check in the interpretation of statuses and parameters
V9 MR-372-J84-13B450$170.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
AC037PREHEATING RELAY
NOTESThis command is only run if fault DF025 Preheating unit diagnostic connection or
DF017 Preheating unit control circuit is present or stored and if no other fault is
present.
Ignition on and engine stopped.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
Before applying the following fault finding procedure, check that the battery voltage is not below 12 V.
Otherwise, recharge the battery.
Check the connections on the preheating unit, heater plugs and injection computer.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
Measure the resistance of the heater plugs. If this resistance is > 2 Ω, replace the defective plug(s).
Check the continuity and the absence of interference resistance on the following connections:
– Connection code 37AA between components257 and 681.
– Connection code 37AB between components 257 and 682.
– Connection code 37AC between components 257 and 683.
– Connection code 37AZ between components 257 and 680.
Check the condition of fuse FM12 (70 A) of the preheating unit supply. Replace it if necessary.
Then check for +12 V on connection BP35 of component 257.
Check the continuity, insulation, and the absence of interference resistance of the following connections:
– Connection code 3FF,
– Connection code 3FY,
Between components 257 and 120.
If the fault is still present, replace the pre-postheating unit.
EDC16C36_V44_AC037/EDC16C36_V4C_AC037/EDC16C36_V48_AC037/EDC16C36_V50_AC037/EDC16C36_V54_AC037/
EDC16C36_V58_AC037EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-374
AFTER REPAIRRepeat the conformity check in the interpretation of statuses and parameters
V9 MR-372-J84-13B450$170.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
AC038
CONTINUED
–Check for +12 V on connection 49B of component 262 and on connection BP71 of component 188.
– Check for earth on connectionMAS of component262.
If the tests are ok, replace the defective fan.
If not, carry out the following operations:
Check the continuity, insulation and the absence of interference resistance on the following connections:
– Connection code 49B between components 262 and 336.
– Connection code MAS between components 262 and MAS.
– Connection code 49A between components 188 and 337.
– Connection code BP71 between components 188 and 597.
– Connection code 49T between components 336 and 337.
– Connection code 3FB
– Connection code 3JN,
between components 336 and 120.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
– Check the conformity of the fan assembly.
Carry out the necessary repairs.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-376
AFTER REPAIRRepeat the conformity check in the interpretation of statuses and parameters
V9 MR-372-J84-13B450$170.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
AC039
CONTINUED
–Check for +12 V on connection BP71 of component 188 and on connection 49B of component 262.
–Check for earth on connection 49A of component 188 and on connection MAS of component 262.
If the tests are ok, replace the defective fan.
If not, carry out the following operations:
Check the continuity, insulation and the absence of interference resistance on the following connections:
– Connection code 49B between components 262 and 335.
– Connection code MAS between components 262 and MAS.
– Connection code 49A between components 188 and 337.
– Connection code BP71 between components 188 and 597.
– Connection code BP71 between components 335 and 597.
– Connection code 3FB,
– Connection code 3JP,
between components 335 and 120.
– Connection code MAS between components 337 and MAS.
– Connection code 3FB,
– Connection code 3JP,
between components 337 and 120.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-377
AFTER REPAIRRepeat the conformity check in the interpretation of statuses and parameters
V9 MR-372-J84-13B450$170.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
AC103EGR BY-PASS
NOTESCarry out this fault finding procedure when the interpretation of fault DF304 EGR
bypass circuit has not been resolved.
Ignition on and engine stopped.
Use Wiring Diagram Technical Note, Mégane II ph2, Scénic II ph2.
Measure the resistance of the EGR bypass solenoid valve between the following connections:
– Connection code 3TP,
– Connection code 3FB,
of component 1301.
43 Ω to 49 Ω at +25°C.
32 Ω to 37 Ω at -40°C
If the resistance is not correct, replace the EGR by-pass solenoid valve.
Check the continuity, insulation and absence of interference resistance on the following connections:
– Connection code 3TP between components 1301 and 120.
– Connection code 3FB between components 1301 and 983.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
If you notice no valve movement when running command AC103, ensure that the computer output stage is
functioning:
Vehicle under + after ignition feed, clear the faults displayed by the diagnostic tool.
With the voltmeter in the direct current position:
With the EGR BY-PASS solenoid valve connected, connect the voltmeter earth lead to connection3TP of
component1301 and the positive lead to connection3FB.
Run command AC103, the voltmeter should display four successive readings which are approximately equal to
the 12 V battery voltage.
If the voltmeter indicates no control or a continuous voltage, contact the Techline.
If activation has run correctly, check the control vacuum:
– Disconnect the solenoid valve inlet hose and connect it to a pressure gauge.
– Start the engine and run it at a stable idle speed.
– If the vacuum pressure does not reach 800 mbar ± 100: check the vacuum pressure circuit from the vacuum
pump.
Repair if necessary.
EDC16C36_V44_AC103/EDC16C36_V4C_AC103/EDC16C36_V48_AC103/EDC16C36_V50_AC103/EDC16C36_V54_AC103/
EDC16C36_V58_AC103EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-381
AFTER REPAIRCarry out a road test followed by a complete check with the diagnostic tool.
V9 MR-372-J84-13B450$190.mif
13B
ALP1 No dialogue with engine management computer
STEP 1
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.
Check the supply to the diagnostic socket:
+ Before ignition.
+ After ignition.
Earth.
Check (according to wiring diagram and equipment):
– The conformity of the after ignition fuse.
– The conformity of the injection relay mounting.
The conformity of the injection relay:
65 Ω ± 5 between the following connections:
– Connection code BP37 of component 983.
– Connection code 3AA of component 983.
infinite resistance between connections (open contact):
– Connection code BP37 of component 983.
– Connection code 3FB of component 983.
resistance < 0.2 Ω between the following connections (contact closed):
– Connection code BP37 of component 983.
– Connection code3FB of component983.
Disconnect the engine management computer and check that there are no conducting parts on the computer
studs. If this reveals any kind of impurity, rectify it and try to establish dialogue.
If the fault is still present, place the bornier Elé. 1681 on the engine harness:
Check for continuity and absence of interference resistance on the following multiplex connections:
– Connection code 133B between components 120 and 225.
– Connection code 133C between components 120 and 225.
Check for + 12 V on connections 3FB and AP29 of component 120.
Check for earth on connections NT of component 120.
A
EDC16C36_V44_ALP01/EDC16C36_V4C_ALP01/EDC16C36_V48_ALP01/EDC16C36_V50_ALP01/EDC16C36_V54_ALP01/
EDC16C36_V58_ALP01
DIESEL INJECTION
Fault finding – Fault Finding Chart
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58

13B-387
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
ALP4
CONTINUED
is the engine running on all cylinders?
Check the operation of the injectors, run test 10 Poor 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 (see Interpretation of statuses and
Interpretation of parameters).
Check the consistency of the signal for the air flowmeter, the engine coolant temperature sensor, the fuel
temperature sensor and the engine speed.
Check the connectors, the continuity, and the absence of interference resistance of the air flowmeter (apply DF056
Air flow sensor circuit), the engine coolant temperature sensor (apply DF001 Coolant temperature circuit), the
fuel temperature sensor (apply DF098 Fuel temperature sensor circuit), and the engine speed (apply DF195
Camshaft sensor - engine speed consistency).
Check:
– That the diesel filter is not clogged.
– That there are no leaks on the high and low pressure diesel circuits: run test 3 Low pressure circuit check.
– The connection of the oil vapour rebreathing circuit.
– The rail pressure regulator (MPROP) (jammed - stuck), apply the interpretation of command AC011 Rail
pressure regulator.
Check the engine timing (and the position of the high pressure pump sprocket). See the procedure in the
Workshop Repair Manual if necessary.
Test the high pressure fuel circuit:
Run the scenario SC035 High pressure fuel circuit fault finding (see Interpretation of commands).
If the fault is still present, contact the techline.
A
NO
YES
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58