13B-149
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition until the end of the power-latch phase, and carry out a road test
followed by a check using the diagnostic tool.
V9 MR-372-J84-13B450$103.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DF228
CONTINUED 2
Check the brake pedal switch connections and the engine management computer connections.
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 condition and adjustment of the brake-pedal switch. Repair if necessary.
Check for + 12 V after ignition feed on the connections of the brake pedal switch connector and the condition of
the fuse.
– Connection code AP10 of component 160.
– Connection code SP13 of component 160.
Check the continuity and insulation against + 12 V and against earth of the following connection:
– Connection code 5A between components 160 and 120/645/119.
Check that the brake pedal switch is working correctly:
in rest position: infinite resistance continuity between the following connections:
– Connection code 5A of component 160.
– Connection code SP13 of component 160.
depressed: continuity between the following connections:
– Connection code 5A of component 160.
– Connection code SP13 of component 160.
Replace the switch if necessary.
A
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-206V9 MR-372-J84-13B450$131.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET001
CONTINUED
Sensor electrical conformity
ABSENT
NOTESIgnition on
If the ignition is not switched on, the status ET001 must be ABSENT.
As soon as the ignition is switched on, the computer should be supplied with power. The status ET001 becomes
PRESENT.
If this status remains locked on ABSENT, follow the procedure below:
Check the status of fuse FM3 (30A) in the engine fuse and relay box.
Check the continuity and absence of any interference resistance on the following connection:
– connection code 3AA between components 120 and 983.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check the condition of the engine management computer connector (see Wiring Diagram Technical Note,
Mégane II ph2, Scénic II ph2, component code 120).
If the connector or connectors are faulty and 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, contact the Techline.
PRESENT
NOTESIgnition on
Normal operating condition.
The computer is correctly supplied after the ignition has been switched on.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-209V9 MR-372-J84-13B450$131.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET004
CONTINUED
Sensor electrical conformity
YESThe air conditioning authorisation only changes to YES if:
– the air conditioning request has been made by the driver (air conditioning switch in
AC or AUTO position with minimum ventilation),
– the engine is not under full load,
– the air conditioning system is not faulty.
NOStatus ET004 remains NO under the following conditions:
– Vehicle stopped with the ignition on,
– faults present in the air conditioning circuit,
– no air conditioning request made by the driver,
– engine under full load.
If status ET004 remains NO then the air conditioning should be authorised. Check:
– that the air conditioning compressor starts correctly,
– the air conditioning system supply fuses,
– the presence of refrigerant in the air conditioning circuit,
If the fault is still present, check the air conditioning computer faults (see 62B, Air
conditioning).
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-210V9 MR-372-J84-13B450$131.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET007PRE-POSTHEATING UNIT CONTROL
STATUS DEFINITIONACTIVE: when the heater plugs are activated according to the temperature of the
engine coolant.
INACTIVE: after the engine has been running for a certain period.
In the event of a fault, consult the interpretation of fault DF017 Preheating unit control
circuit.
NOTESSpecial notes:
Only perform these tests if the statuses do not correspond with the system
programming functions.
Use the Mégane II ph2, Scénic II ph2 Technical Note wiring diagram.
Conformity check with engine stopped and ignition on
ACTIVEWhen the ignition is switched on, the status ET007 must have an ACTIVE status for a
time that varies depending on the temperature of the engine coolant. Both the relay
and the heater plugs are supplied.
After starting, the status should remain ACTIVE for a time that varies depending on
the engine temperature. This is the postheating phase.
If ET007 is INACTIVE when the ignition is switched on, check:
– The supply fuse FM12 (70A) in (597) the engine fuse and relay box.
– The feed to the heater plugs after relay actuation, and the connections of the heater
plugs.
IMPORTANT
On this engine, the plug supply voltage is variable.
EDC16C36_V44_ET007/EDC16C36_V4C_ET007/EDC16C36_V48_ET007/EDC16C36_V50_ET007/EDC16C36_V54_ET007/
EDC16C36_V58_ET007
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-231V9 MR-372-J84-13B450$131.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET143
CONTINUED
Sensor electrical conformity
ACTIVEWhen the coolant reaches 99°C, the injection computer commands the low-speed
relay of the fan assembly, and status ET143 becomes ACTIVE. The relay then
supplies the fan assembly and the cooling fan begins to turn.
If status ET143 is ACTIVE, but the cooling fan is not running, perform the following
operations:
– Check the condition of fuse FM15 (60 A) in the engine fuse and relay box.
Disconnect the low speed and high speed relays, check their operation and the status
of the connectors of the relay mounting (see Wiring Diagram Technical Note,
Mégane II ph2, Scénic II ph2, Component code 597).
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.
Check for the supply of + 12 V after the relay to the low-speed relay of the fan
assembly:
– Connection 3FB of component 700.
Check the continuity and the absence of interference resistance on the following
connection:
– Connection code 49L between components 700 and 321.
Check the continuity and the absence of interference resistance on the following
connection:
– Connection code 49B between components 262 and 321.
Check the continuity and the absence of interference resistance on the following
connection:
– Connection code 3JN between components 700 and 120.
Check that the earth is in order on the MAS connection of component 262.
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 the wiring.
INACTIVEIf the engine temperature is lower than 99°C, the engine cooling fan cannot switch on
and the low speed fan relay of the cannot be run.
Status ET143 must therefore be INACTIVE when the control relay and the engine
cooling fan are not supplied.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-233V9 MR-372-J84-13B450$131.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET144
CONTINUED
Conformity check with engine running, engine coolant temperature > 80°C
(heating and air-conditioning off) INACTIVE OR ACTIVE, depending on the engine temperature.
ACTIVEWhen the coolant reaches 102°C, the injection computer commands the low-speed
relay of the fan assembly and status ET144 becomes ACTIVE. The relay then
supplies the cooling fan.
If status ET144 is ACTIVE, but the cooling fan is not running, perform the following
operations:
– Check the condition of fuse FM15 (60 A) in the engine fuse and relay box.
– Disconnect the high speed relay of the fan assembly, check it is functioning correctly
and the status of the connectors of the relay mounting (see Wiring Diagram
Technical Note, Mégane II ph2, Scénic II ph2, Component code 597).
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.
Check for the supply of + 12 V after the relay to the high-speed fan assembly relay:
– connection 3FB of component 234.
Check the continuity and the absence of interference resistance on the following
connection:
– connection code 3JP between components 234 and 120.
Check the continuity and the absence of interference resistance on the following
connection:
– Connection code 49B between components 234 and 262.
Check that the earth is in order on the MAS connection of component 262.
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 the wiring.
INACTIVEWhen the injection computer no longer requests cooling, the status ET144 changes to
INACTIVE. The fan assembly should then switch off.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 44, 4C, 48,
50, 54, 58
13B-254V9 MR-372-J84-13B450$132.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET704
ET705
CONTINUED
Sensor electrical conformity
ACTIVE
or
INACTIVEIf the brake lights are working:
check the continuity and the absence of interference resistance on the following
connection:
– Connection code 5A between components 160 and 120/645/119.
If there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair) repair the wiring, otherwise replace it.
If the brake lights are not operational, check:
– the condition and fitting of the brake switch,
– the status and conformity of the fuse for the brake lights.
– the conformity of the values in the following table:
Disconnect the switch and carry out the following checks:
for MEGANE II and SCENIC II with ESP
Continuity between
connectionsInsulation between
connections
Switch engaged
(Brake pedal released)5A and BPT 65G and SP17
Switch released
(Brake pedal
depressed)65G and SP17 5A and BPT
Replace the switch if the values obtained are not correct.
For MEGANE II and SCENIC II without ESP
Continuity between
connectionsInsulation between
connections
Switch engaged
(Brake pedal released)5A and BPT 65A and SP17
Switch released
(Brake pedal
depressed)65A and SP17 5A and BPT
Replace the switch if the values obtained are not correct.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 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