2012 RENAULT SCENIC heating

13B-447V12 MR-372-J84-13B300$150.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
* supplier: Champion: the load resistance is between: 547 mΩ < X < 669 mΩ.
AC063
CONTINUED
If the Thermoplunger no. 1 relay or the additional heater interface unit functions using command AC063,
but there is still a passenger compartment heating/demisting problem, check using the wiring diagram:
The conformity of the thermoplunger maxi-fuse.
Check for + 12 V battery on connection BP9 of component 1067 or 1550.
Check the conformity of the thermoplunger no. 1 relay or the additional heater interface unit.
Check the continuity of connection 3JB between components 1067 or 1550 and 998.
Measure the resistance of the thermoplunger*.
The presence of earth on the water chamber (thermoplunger mounting).
Also check the level of the cooling circuit and that there are no leaks.
Carry out the necessary repairs.
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-448V12 MR-372-J84-13B300$150.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
AC064THERMOPLUNGER No. 2 RELAY
NOTESThere must be no present or stored faults.
Perform this fault finding procedure if there is a fault with the passenger compartment
heating - demisting.
Consult the "Wiring diagrams" Technical Note to locate the relevant fuses and relays.
Special notes:
The thermoplunger no. 2 relay or the additional heater interface unit supplies
thermoplungers 2 and 3 in parallel.
Use the Wiring Diagram Technical Note, Laguna II ph2, Vel Satis ph2, Espace IV
ph2, Mégane II ph2, Scénic II ph2.
If the thermoplunger no. 2 relay does not operate during command AC064.
Check the condition of the thermoplunger 2 relay mounting on the engine fuse box or the additional heater
interface unit (see Wiring Diagram Technical Note, Vehicle, component code 1068 or 1550).
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Vehicle, component code 120).
If the connector or connectors are faulty and if there is a repair procedure (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
if the fault is still present, check as follows that this relay is controlled by the engine management computer:
Disconnect the thermoplunger no. 2 relay, fit a 50 Ω to 100 Ω resistor on its mounting instead of the coil, and
connect a voltmeter as follows:
– positive terminal to + 12 V battery,
– negative terminal on connection 3JAA of component 1068 or 1550.
Run command AC064.
If the voltmeter shows the battery voltage (4 ON-OFF cycles of 10 seconds), replace the thermoplunger no. 2
relay.
If the voltmeter does not show the battery voltage (4 ON-OFF cycles of 10 seconds), contact the Techline.
EDC16CP33_V18_AC064 / EDC16CP33_V1C_AC064 / EDC16CP33_V54_AC064 / EDC16CP33_V20_AC064 / EDC16CP33_V58_AC064 /
EDC16CP33_V5C_AC064 / EDC16CP33_V24_AC064 / EDC16CP33_V04_AC064 / EDC16CP33_V08_AC064 / EDC16CP33_V44_AC064 /
EDC16CP33_V4C_AC064 / EDC16CP33_V34_AC064 / EDC16CP33_V38_AC064 / EDC16CP33_V74_AC064 / EDC16CP33_V28_AC064 /
EDC16CP33_V62_AC064 / EDC16CP33_V26_AC064 / EDC16CP33_V60_AC064
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-449V12 MR-372-J84-13B300$150.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
* supplier: Champion: the load resistance is between: 547 mΩ < X < 669 mΩ.
AC064
CONTINUEDTHERMOPLUNGER No. 2 RELAY
If thermoplunger no. 2 relay operates with command AC064, but there is still a passenger compartment
heating/demisting fault, use the wiring diagram to check:
The conformity of the thermoplunger maxi-fuse.
Check for + 12 V battery on connection BP91 of component 1068 or 1550
Check the conformity of thermoplunger no. 2 relay.
Check the continuity of connection 3JAD or 3JD and 3JAC between components 1068 or 1550 and (1072 and
1073).
Measure the resistances of the thermoplungers*
The presence of earth on the water chamber (thermoplunger mounting).
Also check the level of the cooling circuit and that there are no leaks.
Carry out the necessary repairs.
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-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-476
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 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 eliminated, perform the following checks.
IMPORTANT:
In the event of the engine overheating above 118°C, the computer deliberately limits the fuel flow (overheating
warning light comes on from 115°C).
– Please observe the cleanliness guidelines and safety advice.
Note:
For the M9R 724 (Vdiag 5C and 58):
The engine is limited to 3000 rpm if the vehicle is stationary or if the vehicle speed is less than 4 mph (7 km/h)
and if the engine is warm.
EDC16CP33_V18_ALP04 / EDC16CP33_V1C_ALP04 / EDC16CP33_V54_ALP04 / EDC16CP33_V20_ALP04 / EDC16CP33_V58_ALP04 /
EDC16CP33_V5C_ALP04 / EDC16CP33_V24_ALP04 / EDC16CP33_V04_ALP04 / EDC16CP33_V08_ALP04 / EDC16CP33_V44_ALP04 /
EDC16CP33_V4C_ALP04 / EDC16CP33_V34_ALP04 / EDC16CP33_V38_ALP04 / EDC16CP33_V74_ALP04 / EDC16CP33_V28_ALP04 /
EDC16CP33_V62_ALP04 / EDC16CP33_V26_ALP04 / EDC16CP33_V60_ALP04
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-480
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
ALP5 Irregular engine operation
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.
Use the Wiring Diagram Technical Note, Laguna II ph2, Vel Satis ph2, Espace IV
ph2, Mégane II ph2, Scénic II ph2.
If the engine races during gear changes, if there is a floor mat, check that this is not blocking the accelerator pedal,
the brake pedal and the clutch pedal, then check the conformity of the clutch switch and the conformity of the
accelerator pedal sensor when the pedal is released (see PR086 Pedal potentiometer voltage gang 1 and
PR088 Pedal potentiometer voltage gang 2, Sensor supply).
Measure the resistance between connections 3BG and 3BL of component 149.
If the sensor resistance is not between:
741 Ω < X < 905 Ω at +20°C, replace the sensor.
Check the continuity and absence of interference resistance on the following connections:
•3BG between the components 120 and 149,
•3BL between components 120 and 149.
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 low pressure circuit: run Test 3 Low pressure circuit check.
Apply the air flow checking procedure, (see conformity in the interpretation of statuses and parameters).
Check the turbocharger: apply Test 7 Variable geometry turbocharger control.
If the fault is still present, 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).
EDC16CP33_V18_ALP05 / EDC16CP33_V1C_ALP05 / EDC16CP33_V54_ALP05 / EDC16CP33_V20_ALP05 / EDC16CP33_V58_ALP05 /
EDC16CP33_V5C_ALP05 / EDC16CP33_V24_ALP05 / EDC16CP33_V04_ALP05 / EDC16CP33_V08_ALP05 / EDC16CP33_V44_ALP05 /
EDC16CP33_V4C_ALP05 / EDC16CP33_V34_ALP05 / EDC16CP33_V38_ALP05 / EDC16CP33_V74_ALP05 / EDC16CP33_V28_ALP05 /
EDC16CP33_V62_ALP05 / EDC16CP33_V26_ALP05 / EDC16CP33_V60_ALP05
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-506V12 MR-372-J84-13B300$180.mif
DIESEL INJECTION
Fault finding – Test13B
TEST10
CONTINUED 3
Part C:
Confirmation of flow correction fault finding for each injector (individual correction):
Clear the faults and run a test with the engine at idle speed and the fuel temperature > 50°C, check that no faults
appear on the diagnostic tool and that the correction values do not reach X = ± 5 mg/stroke to confirm the repair.
– If one or more cylinders have flow correction values for an injector which exceed X = ± 5 mg/stroke, follow the
fault finding procedure described in Part A: Fuel regulation balance check for each injector (individual) of
Test 10.
– Otherwise, follow the fault finding procedure described in Part D of Test 10.
Part D:
Injector nozzle sealing check:
Check the level and condition of the engine oil:
– If there is contamination from the diesel fuel, the leaking injector nozzle will be "greasy".
– Disconnect the preheating relay.
– Ensure that this is not caused by rising engine oil by checking the engine compression values.
– Check the condition of the heater plug: this must not be wet. If it is, change the defective injector.
– If the engine compression values are correct: locate the faulty injector by looking at the condition of the cylinders
and the pistons through the heater plug wells (greasy cylinder, overheating, signs of damage, etc.).
– If the cylinder - piston examination is not conclusive, remove the injectors and change the one with the greasy
nozzle.
– If the fault finding checks do not enable the engine to be repaired, contact the Techline.
After replacing the injector, follow the injector code programming procedure (see Replacement of components),
run SC036 Reinitialise programming, and select the number of the injector replaced.
Note:
Before replacing an injector, check for the sealing washer and its conformity (see Fault finding chart ALP4 Poor
performance).
IMPORTANT:
When removing / refitting injectors, follow the cleanliness and safety instructions (see MR 395 (Laguna II ph2),
402 (Vel Satis), 405 (Espace IV Ph2), 364 (Megane II ph2), 370 (Scenic II ph2) Mechanical, 13B, Diesel
injection, Diesel injectors: Removal - Refitting).
EDC16CP33
Program No.: C4
Vdiag No.: 04, 08, 18, 1C,
20, 24, 26, 28, 34, 38, 44,
4C, 54, 58, 5C, 60, 62, 74