2012 RENAULT SCENIC heater

13B-324V12 MR-372-J84-13B300$102.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET781
CONTINUED
STATUS2
Fast plugs
Status ET781 is STATUS 2 if the heater plugs fitted to the engine have white rings,
otherwise run command SC036 and select HEATER PLUGS (see Interpretation of
commands).
STATUS3NOT DEFINED
Status ET781 is STATUS 3 when the heater plugs are not configured in the injection
computer.
To determine the heater plugs fitted to the engine, visually check the colour of the
plug rings, then run command SC036 and select HEATER PLUGS
(seeInterpretation of commands).
EDC16CP33
Program No.: C4
VDiag No.: 04, 08, 20, 24,
26, 28, 34, 38, 44, 4C, 60,
62, 74
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.

13B-436V12 MR-372-J84-13B300$150.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
SC036REINITIALISE PROGRAMMING
NOTESThis command is used to reset the computer parameters according to the type of
operation or component repaired or replaced from the following list:
– the injectors
– the EGR valve,
– the damper valve,
– after particle filter replacement,
– after particle filter regeneration using the CLIP diagnostic tool,
– after injection computer replacement with no backup option,
– the heater plugs.
Ignition on and engine stopped.
To run this command, select scenario SC036 in the diagnostic tool.
Procedure to be followed:
– on the main screen, select the component to reinitialise after an operation (removal - refitting, regeneration or
replacement of the component),
– select YES then OK to begin reinitialisation,
–Important: when reinitialising injectors, do not forget that cylinder no. 1 is located at the timing end,
– select end on the configuration completed screen to return to the main screen,
– end of operation.
EDC16CP33_V18_SC036 / EDC16CP33_V1C_SC036 / EDC16CP33_V54_SC036 / EDC16CP33_V20_SC036 / EDC16CP33_V58_SC036 /
EDC16CP33_V5C_SC036 / EDC16CP33_V24_SC036 / EDC16CP33_V04_SC036 / EDC16CP33_V08_SC036 / EDC16CP33_V44_SC036 /
EDC16CP33_V4C_SC036 / EDC16CP33_V34_SC036 / EDC16CP33_V38_SC036 / EDC16CP33_V74_SC036 / EDC16CP33_V28_SC036 /
EDC16CP33_V62_SC036 / EDC16CP33_V26_SC036 / EDC16CP33_V60_SC036
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-442V12 MR-372-J84-13B300$150.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
AC031THERMOPLUNGER No. 3 RELAY
NOTESCheck that the computer is correctly configured using command LC056
Thermoplungers
There must be no present or stored faults:
Perform this fault finding procedure if there is a fault with the passenger compartment
heating - demisting.
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. 3 relay or the additional heater interface unit does not function when command
AC031 is run.
Check the condition of the thermoplunger 3 relay mounting on the engine fuse box or the additional heater
interface unit (see Wiring Diagram Technical Note, Vehicle, component code 1069 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, Electrical
wiring repair, 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. 3 relay and fit a 50 Ω to 100Ω resistor on its mounting instead of the coil and
connect a voltmeter as follows:
– positive terminal to + 12 V battery,
– negative terminal to connection 3JAB of component 1069 or 1550.
Run command AC031.
If the voltmeter indicates the battery voltage (4 ON-OFF cycles of 10 seconds), replace the thermoplunger no. 3
relay.
If the voltmeter does not show the battery voltage (4 ON-OFF cycles of 10 seconds), contact the Techline.
EDC16CP33_V18_AC031 / EDC16CP33_V1C_AC031 / EDC16CP33_V54_AC031 / EDC16CP33_V20_AC031 / EDC16CP33_V58_AC031 /
EDC16CP33_V5C_AC031 / EDC16CP33_V24_AC031 / EDC16CP33_V04_AC031 / EDC16CP33_V08_AC031 / EDC16CP33_V44_AC031 /
EDC16CP33_V4C_AC031 / EDC16CP33_V34_AC031 / EDC16CP33_V38_AC031 / EDC16CP33_V74_AC031 / EDC16CP33_V28_AC031 /
EDC16CP33_V62_AC031 / EDC16CP33_V26_AC031 / EDC16CP33_V60_AC031
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-443V12 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.
AC031
CONTINUED
If the thermoplunger no. 3 relay or the additional heater interface unit functions using command AC031,
but there is still a passenger compartment heating/demisting problem, use the wiring diagram to check:
– The conformity of the thermoplungers maxi-fuse.
– Check for + 12 V battery feed on connection BP9 of component 1069 or 1550.
– Check the conformity of heating element no. 3 relay.
– Check the continuity of connection 3JAC or 3JC between components 1069 or 1550 and 1074.
– 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-444V12 MR-372-J84-13B300$150.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.
Use the Wiring Diagram Technical Note, Laguna II ph2, Vel Satis ph2, Espace IV
ph2, Mégane II ph2, Scénic II ph2.
IMPORTANT:
– Please observe the cleanliness guidelines and safety advice.
– Make sure the correct type of plug is fitted on the vehicle, slow or fast:
Slow plugs have a black ring
Quick plugs have a white ring.
For Vdiag 20, 24, 34, 38 and 74, if replacing heater plugs by plugs of a different type
(see Replacement of components and Replacing heater plugs).
Before applying the following fault finding procedure, check that the battery voltage is not below 12 V. Otherwise,
recharge the battery.
STEP 1:
Using a multimeter fitted with a current clamp, bring together the 4 heater plug supply wires.
Run command AC037 and measure the current consumed by the 4 heater plugs.
If the value of the current consumed is not between 60 A and 80 A, move on to step 2, otherwise end of fault
finding.
EDC16CP33_V18_AC037 / EDC16CP33_V1C_AC037 / EDC16CP33_V54_AC037 / EDC16CP33_V20_AC037 / EDC16CP33_V58_AC037 /
EDC16CP33_V5C_AC037 / EDC16CP33_V24_AC037 / EDC16CP33_V04_AC037 / EDC16CP33_V08_AC037 / EDC16CP33_V44_AC037 /
EDC16CP33_V4C_AC037 / EDC16CP33_V34_AC037 / EDC16CP33_V38_AC037 / EDC16CP33_V74_AC037 / EDC16CP33_V28_AC037 /
EDC16CP33_V62_AC037 / EDC16CP33_V26_AC037 / EDC16CP33_V60_AC037
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-445V12 MR-372-J84-13B300$150.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
AC037
CONTINUED
STEP 2:
Check the connections of the preheating unit, component code 257, the heater plugs, component codes 680, 681,
682 and 683 and the injection computer, component code 120.
Measure the resistance of the heater plugs. If the resistance value is > 2 Ω, replace the faulty plug or plugs,
making sure that the correct plug type, slow or fast, is fitted on the vehicle.
Check the continuity and absence of interference resistance of the following connections:
•37AB between components 257 and 683,
•37AA between components 257 and 680,
•37Z between components 257 and 681,
•37AC between components 257 and 682.
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 condition of the preheating unit supply fuse (70 A) (see MR 364 (Mégane II ph2), MR 370 (Scénic II
ph2), MR 395 (Laguna II ph2), 402 (Vel Satis ph2), 405 (Espace IV ph2) Mechanical, 81C, Fuses, Fuses: List
and location of components).
Check the + 12 V battery supply to the preheating unit on the following connection:
•BP35 of component 257.
Check the continuity and absence of interference resistance of the following connections:
•3FY between components120 and 257,
•3FF between components120 and 257.
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.
If the fault is still present, replace the preheating unit.
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-446V12 MR-372-J84-13B300$150.mif
DIESEL INJECTION
Fault finding – Interpretation of commands13B
AC063THERMOPLUNGER No. 1 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.
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. 1 relay or the additional heater interface unit does not function when command
AC063 is run.
Check the condition of the thermoplunger no. 1 relay mounting connector on the engine fuse box (see Wiring
Diagram Technical Note, Vehicle, component code 1067 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 thermoplunger no. 1 relay, and fit a 50 Ω to 100 Ω resistor on the mounting instead of the coil and
connect a voltmeter as follows:
– positive terminal to + 12 V battery,
– negative terminal to connection 3JA of component 1067 or 1550.
Run command AC063.
If the voltmeter shows the battery voltage (4 ON-OFF cycles of 10 seconds), replace the thermoplunger no. 1
relay.
If the voltmeter does not show the battery voltage (4 ON-OFF cycles of 10 seconds), contact the Techline.
EDC16CP33_V18_AC063 / EDC16CP33_V1C_AC063 / EDC16CP33_V54_AC063 / EDC16CP33_V20_AC063 / EDC16CP33_V58_AC063 /
EDC16CP33_V5C_AC063 / EDC16CP33_V24_AC063 / EDC16CP33_V04_AC063 / EDC16CP33_V08_AC063 / EDC16CP33_V44_AC063 /
EDC16CP33_V4C_AC063 / EDC16CP33_V34_AC063 / EDC16CP33_V38_AC063 / EDC16CP33_V74_AC063 / EDC16CP33_V28_AC063 /
EDC16CP33_V62_AC063 / EDC16CP33_V26_AC063 / EDC16CP33_V60_AC063
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-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.