2012 RENAULT SCENIC inlet air

13B-451V12 MR-372-J84-13B300$150.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
AC103
CONTINUED
With the voltmeter in the direct current position:
With the EGR BYPASS solenoid valve connected, connect the voltmeter earth lead to connection3TP of
component1301 and the positive lead to connection3FB of component1301. 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 does not reach a value between 0.250 bar and 0.550 bar, check the vacuum circuit from the
vacuum pump.
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.

13B-459V12 MR-372-J84-13B300$150.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
MT001TURBOCHARGING FUNCTION
NOTESPerform this fault finding procedure:
– following the interpretation of a fault concerning the air line which cannot be rectified,
– following an inconsistency found in the parameters concerning the air line
(turbocharging pressure or inlet air flow),
– following a customer complaint (starting faults, engine speed instability, lack of
power).
NOTESThis fault finding mode allows you to check dynamically certain mechanical components
on the engine.
To do this, the engine will run a 4-phase cycle which will enable the entire air line to be
checked: air filter, air flowmeter, duct (hoses), air refrigerant, turbocharging pressure
sensor, turbocharger, inlet manifold, exhaust manifold and exhaust pipe.
This test lasts for approximately 50 seconds.
Interpretation of test results:
The data recorded during this test is displayed in the DATA section.
- Identify any data which is outside the tolerance range and apply the different Monitool fault finding procedures
if necessary.
Introduction:
Engine parameters used during this test:
– PR055 Engine speed
– PR035 Atmospheric pressure
– PR059 Inlet air temperature
– PR064 Coolant temperature
–PR132 Air flow
– PR041 Turbocharging pressure
– PR051 EGR valve position feedback
EDC16CP33_V04_MT001 / EDC16CP33_V44_MT001
EDC16CP33
Program No.: C4
Vdiag No.: 04, 44
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.

13B-463V12 MR-372-J84-13B300$150.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
MT001
CONTINUED 4
Monitool no. 3 fault finding procedure:
– Check the + 5 V supply of connection 3KJ of component 799.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
– Run Test 5 Air flowmeter: check that there is no dust on the sensors.
If the checks do not reveal any non-conformity and the fault is still present, change the air flowmeter. Attach a
screen copy of the Monitool results.
Monitool no. 4 fault finding procedure:
– Check that there are no air leaks between the turbocharger and the inlet manifold.
– Check the tightness of the different clips.
– Check that there are no air refrigerant leaks.
If the checks do not reveal any non-conformity and the fault is still present, change the turbocharging pressure
sensor. Attach a screen copy of the Monitool results.
Monitool no. 5 fault finding procedure:
– Check the turbocharging pressure sensor by interpreting the conformity check for PR041 Turbocharging
pressure.
If the checks do not reveal any non-conformity and the fault is still present, change the turbocharging pressure
sensor. Attach a screen copy of the Monitool results.
EDC16CP33
Program No.: C4
Vdiag No.: 04, 44
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.

13B-473
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V12 MR-372-J84-13B300$170.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP2
CONTINUED 1
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check the conformity of the engine earths (oxidation, tightness, etc.).
Check the mounting and condition (overheating) of the sensor.
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 sensor consistency.
Test the high pressure fuel circuit:
Run scenario SC035 High pressure fuel circuit fault finding.
To interpret the result, apply the interpretation of command SC035 (see Interpretation of commands).
Check the fuel circuit sealing: run Test 3 Low pressure circuit check.
If Test 3 is correct.
If Test 3 is not correct, proceed as follows:
Check the conformity of the type of heater plugs configured:
For Vdiag 20, 24, 38 and 74: consult ET781 Heater plugs in the Ignition/Preheating subfunction and check the
conformity with the type of plugs installed:
– Slow plugs have a black ring.
– Fast plugs have a white ring.
If the heater plugs are being replaced with plugs of a different type (see Replacement of components, Replacing
heater plugs).
For all Vdiags, check that all 4 plugs have the same colour ring.
Check that the heater plugs are actuated using the AC037 Preheating relay command.
Check the sealing and condition of the inlet circuit: run Test 4 Turbocharged air inlet circuit check, and follow
the related fault finding procedure (see Test 4).
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74

13B-477
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V12 MR-372-J84-13B300$170.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP4
CONTINUED 1
Is the engine running on all cylinders?
Test the high pressure fuel circuit:
Run scenario SC035 High pressure fuel circuit fault finding (see Interpretation of commands).
Check that the fuel tank is correctly filled and that the fuel is correct: run Test 12 Diesel fuel conformity check.
If the fuel (diesel fuel) used is not correct:
– Replace the fuel (diesel fuel).
– Replace the fuel filter (diesel fuel).
– Bleed the low and high pressure fuel circuit (diesel fuel).
Check that the injectors are correctly fitted (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 one or more injector(s) are not in order, remove and check the conformity of the washer.
– If one injector does not touch the straightedge (clearance of more than 1mm), remove the injector and check
that the washer is present.
Clean the injector well and the injector, refit the injector with the correct sealing washer.
Check the sealing and the condition of the inlet circuit: run Test 4 Turbocharged air inlet circuit check.
Check the condition of the air flowmeter: run Test 5 Air flowmeter.
Check the turbocharger: run Test 7 Variable geometry turbocharger control then Test 8 Turbocharger
rotating part.AYES
NO
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74

13B-484
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V12 MR-372-J84-13B300$170.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
ALP7 Rough idle
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 eliminated, perform the following checks.
Check the sealing and the condition of the
inlet circuit: run Test 4 Turbocharged air
inlet circuit check. Check the low
pressure circuit: run Test 3 Low pressure
circuit check. Check the engine parameters:
– Check the update of the engine management
computer calibration (last calibration).
– Check the conformity of the IMA* codes (see
Interpretation of commands, SC002 Enter injector
codes).
Check the charging circuit using Technical Note 6014A,
Charging circuit check, Alternator fault finding, 16A,
Alternator (formerly Technical Note 3455A).
– Check that the engine speed signal is correct using an
oscilloscope: no interference, broken tooth, etc.
– If not correct, check:
– The wiring.
– The flywheel position and the condition of the flywheel
teeth.
– Check the position and tightness of the engine speed
sensor. – Check the connections and wiring of the
injectors.
– Check the connections and wiring of the
engine management computer to the
injectors.
Check the high pressure circuit (external
leaks).
(see the end of the Fuel circuit external
leaks fault finding chart)
A
EDC16CP33_V18_ALP07 / EDC16CP33_V1C_ALP07 / EDC16CP33_V54_ALP07 / EDC16CP33_V20_ALP07 / EDC16CP33_V58_ALP07 /
EDC16CP33_V5C_ALP07 / EDC16CP33_V24_ALP07 / EDC16CP33_V04_ALP07 / EDC16CP33_V08_ALP07 / EDC16CP33_V44_ALP07 /
EDC16CP33_V4C_ALP07 / EDC16CP33_V34_ALP07 / EDC16CP33_V38_ALP07 / EDC16CP33_V74_ALP07 / EDC16CP33_V28_ALP07 /
EDC16CP33_V62_ALP07 / EDC16CP33_V26_ALP07 / EDC16CP33_V60_ALP07
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74

13B-490
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
V12 MR-372-J84-13B300$170.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
IMA*: Individual injector correction
ALP9
CONTINUED 3
– Check the consistency between the IMA* codes entered and the codes engraved on the injector bodies.
– Check that the particle filter differential pressure sensor is correctly positioned and connected (see MR 395, 402,
405, 364 or 370 Mechanical, 19B Exhaust, Particle filter pressure sensor: Removal - Refitting),
– Check the exhaust pipe (see TEST1 Exhaust pipe check),
– Check the air inlet circuit (see TEST4 Turbocharged air inlet circuit check),
– Check the air flowmeter (see TEST5 Air flowmeter),
– Check the turbocharger (see TEST7 Variable geometry turbocharger check),
– Check the injectors (see TEST10 Poor injector operation),
– Check the cylinder compressions.
If the fault has not been located and the customer complaint is still present, contact the Techline.
YES
E
EDC16CP33
Program No.: C4
Vdiag No.: 18, 1C, 20, 24,
26, 28, 54, 58, 5C, 60, 62

13B-492V12 MR-372-J84-13B300$180.mif
13B
*Technical Note 3419: Fault finding on the turbocharger for petrol and diesel engines. EXHAUST SYSTEM CHECK TEST1
RESOLVING MISFIRESTEST2
LOW PRESSURE CIRCUIT CHECK TEST3
TURBOCHARGED AIR INLET CIRCUIT CHECK TEST4
AIR FLOW SENSORTEST5
FUEL RETURN RAIL VALVE CHECK TEST6
VARIABLE GEOMETRY TURBOCHARGER CONTROLTEST 7: Apply
TEST 4 of
Technical Note
3419*
ROTATING PART OF TURBOCHARGERTEST 8: Apply
TEST 7 of
Technical Note
3419*
POOR INJECTOR OPERATION TEST10
TEMPERATURE UPSTREAM OF TURBINE TOO LOW TEST11
DIESEL FUEL CONFORMITY CHECK TEST12
DIESEL INJECTION
Fault finding – Test
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74