Page 145 of 236

13B - 145
DIESEL INJECTION
Fault finding - Conformity check13B
V10 MR-372-J84-13B150$470.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
STARTING
NOTESOnly check conformity after a complete check using the diagnostic tool. The values
shown in this conformity check are given as a guide.
Test conditions: engine at idle speed, coolant temperature at > 80°.
Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
1 Power supplyET001: + After ignition
computer feedPRESENTIf the event of a fault,
carry out fault finding on
the charging circuit
PR071: Computer feed
voltage9 V < X < 16 VIn the event of a fault,
carry out fault finding on
the charging circuit.
PR358: Sensor
reference
voltage3.47 < X < 3.75 V
(Average of the three
sensor feed voltages)In the event of a fault,
consult the interpretation
of faults DF011 Sensor
feed voltage no. 1, DF012
Sensor feed voltage no. 2,
and DF013 Sensor feed
voltage no. 3.
2 Starting ET076:StartingAUTHORISED:
The injection gives
authorisation to start
or
PROHIBITED:
The injection does not
give authorisation to
start.If status ET076 is
PROHIBITED, carry out
fault finding on the entire
multiplex network.
3 Engine operation ET038:EngineAt idling speed
RunningNone
4 Synchronisation ET238: SynchronisationPERFORMEDIn the event of a fault,
consult the interpretation
of status ET238
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13B - 147
DIESEL INJECTION
Fault finding - Status summary table13B
V10 MR-372-J84-13B150$517.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4CDIESEL INJECTION
Fault finding - Status summary table
*RCH: Passenger compartment heating resistorTool Status Diagnostic tool title
ET001+ After ignition computer feed
ET003Engine immobiliser
ET004Air conditioning authorisation
ET007Preheating unit control
ET014Check cooling fan 1
ET015Check cooling fan 2
ET021High speed fan assembly request
ET022Low speed fan assembly request
ET035Reverse gear signal
ET038Engine
ET042Cruise control/speed limiter
ET076Starting
ET077Impact detected
ET078Air regulation
ET079Air conditioning present
ET088Compressor actuation request
ET104Injector code use
ET111RCH* number set
ET112RCH* cut-off
ET233Clutch pedal
ET238Synchronisation
ET341Immobiliser code programmed
ET405Clutch pedal switch
ET413Cruise control/speed limiter function
ET415Deactivation of cruise control/speed limiter
ET703Cruise control/speed limiter buttons
ET704Brake switch no. 1
ET705Brake switch no. 2
MR-372-J84-13B150$517.mif
Page 148 of 236

13B-148
DIESEL INJECTION
Fault finding - Interpretation of statuses13B
V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4CDIESEL INJECTION
Fault finding - Interpretation of statuses
ET001
COMPUTER + AFTER IGNITION FEED
NOTESOnly perform the tests if the statuses do not correspond with the system programming
functions.
ABSENT ignition on
Check the condition and conformity of the F5D (5A) supply fuse for the UPC.
Repair if necessary.
Check for the presence of an earth on the following connections:
Injection computer black 32-track connector A, track G4 battery earth
Injection computer black 32-track connector A, track H4 battery earth
Injection computer black 32-track connector A, track H1 battery earth
Repair if necessary.
Check for + 12 V on trackD1 of connector A of the injection computer.
If there is no voltage, check the continuity and insulation against earth of the following
connection:
Injection computer black 32-track connector A, track D1 Track 1 UPC black
connector
Repair if necessary.
PRESENT ignition on
Check that there is not + 12 V with the ignition switched on trackD1 of connector A of
the injection computer.
Repair if necessary.
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
EDC16_V44_ET001/EDC16_V48_ET001/EDC16_V4C_ET001
MR-372-J84-13B150$564.mif
Page 150 of 236

DIESEL INJECTION
Fault finding - Interpretation of statuses13B
13B-150V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
ET004
AC AUTHORISED
NOTESOnly perform the tests if the statuses do not correspond with the system programming
functions.
YES
NO
The 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.
The status ET004 remains at NO" in 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 at NO then the air conditioning should be authorised, check:
– that the air conditioning compressor is activated correctly,
– the air conditioning system feed fuses,
– for gas in the air conditioning circuit,
– the gas pressure value is consistent at idle speed.
If the fault is still present, check the air conditioning computer for faults (See 62A, Air
conditioning).
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
EDC16_V44_ET004/EDC16_V48_ET004/EDC16_V4C_ET004
Page 151 of 236

DIESEL INJECTION
Fault finding - Interpretation of statuses13B
13B-151V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
ET007
PRE-POSTHEATING UNIT CONTROL
NOTESOnly perform the tests if the statuses do not correspond with the system programming
functions.
YES
NO
When the vehicle is started from cold, the injection computer controls the pre/postheating
unit so that the vehicle can be started.
Status ET007 changes to YES a few seconds after the ignition is switched on and during
pre/postheating.
If the vehicle does not start and status ET007 changes to YES, check:
–the F2 (70A) supply fuse on the preheating unit,
– the resistance of the heater plugs.
Replace any plugs with a resistance greater than 2 Ω.
If the vehicle starts and the status ET007 remains YES during the engine functional
stage, refer to the interpretation of faults:
DF017 Preheating relay control circuit.
DF025 Pre-postheating unit diagnostic connection.
After the engine is started and preheating, the injection computer should stop the pre/
postheating unit operating.
Status ET007 Should change to NO.
In the event that the vehicle does not start and status ET007 remains at NO, check the
continuity and the absence of interference resistance of the following connections:
Injection computer grey 32-track connector C, track A4 Track 9 preheating
unit
Injection computer grey 32-track connector C, track E2 Track 8 preheating
unit
Repair if necessary.
If the fault is still present, refer to the interpretation of faults:
DF017 Preheating relay control circuit.
DF025 Pre-postheating unit diagnostic connection.
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
EDC16_V44_ET007/EDC16_V48_ET007/EDC16_V4C_ET007
Page 156 of 236
13B-156
DIESEL INJECTION
Fault finding - Interpretation of statuses13B
V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
ET038
ENGINE
STOPPEDStatus ET038 is stopped if the engine ignition is on but there has been no starter
operation.
STALLEDStatus ET038 is stalled when the engine has stalled. The vehicle is still under + after
ignition feed.
RUNNINGStatus ET038 is running if the engine has started.
STARTINGStatus ET038 is starter if the engine is in starting phase.
AFTER REPAIRCarry out a road test followed by another check with the diagnostic tool.
EDC16_V44_ET038/EDC16_V48_ET038/EDC16_V4C_ET038
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13B-159
DIESEL INJECTION
Fault finding - Interpretation of statuses13B
V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
ET042
(CONTINUED 2)
SPEED
LIMITER
When the driver presses the main switch in the speed limiter position, status ET042
becomes SPEED LIMITER.
If CRUISE CONTROL or INACTIVE appears although the switch was depressed in the
speed limiter position, carry out the following operations:
Check the connections of the cruise control/speed limiter main switch.
Check for + 12 V after ignition on the main switch connector.
– Connection code AP43 of component 1081 (Mégane II).
– Connection code AP43 of component 1546 (Scénic II).
Disconnect the main switch and with it in the rest position, check the insulation between:
– Connection codes AP43 and 3FX of component 1081 (Mégane II).
– Connection codes AP43 and 3PD of component 1081 (Mégane II).
– Connection codes AP43 and 3FX of component 1546 (Scénic II).
– Connection codes AP43 and 3PD of component 1546 (Scénic II).
– Check the continuity between connections AP43 and 3PD of component 1081
(Mégane II) and component 1546 (Scénic II) in the speed limiter position.
– Check the continuity between connections AP43 and 3FX of component 1081
(Mégane II) and component 1546 (Scénic II) in the cruise control position.
If these checks show incorrect values, replace the main switch.
Check the insulation, continuity and the absence of interference resistance on the
following connections:
– Connection code 3FX,
– Connection code 3PD,
between components 1081 and 120 (Mégane II).
between components 1546 and 120 (Scénic II).
Also check the engine management computer connectors.
If there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
Page 160 of 236

13B-160
DIESEL INJECTION
Fault finding - Interpretation of statuses13B
V10 MR-372-J84-13B150$564.mif
EDC16 INJECTION
Program No.: C1
Vdiag No.: 44, 48 and 4C
ET042
(CONTINUED 3)
CRUISE
CONTROL
When the driver presses the main cruise control button, status ET042 becomes CRUISE
CONTROL.
If SPEED LIMITER or INACTIVE appears although the driver pressed the switch in the
cruise control position, carry out the following operations:
Check the connections of the cruise control/speed limiter main switch.
Check for + 12 V APC on the main switch connector.
– Connection code AP43 of component 1081 (Mégane II).
– Connection code AP43 of component 1546 (Scénic II).
Disconnect the switch and when it is in the rest position, check the insulation between:
– Connection codes AP43 and 3FX of component 1081 (Mégane II).
– Connection codes AP43 and 3PD of component 1081 (Mégane II).
– Connection codes AP43 and 3FX of component 1546 (Scénic II).
– Connection codes AP43 and 3PD of component 1546 (Scénic II).
Check the continuity between connections AP43 and 3PD of component 1081
(Mégane II) or component 1546 (Scénic II) in the speed limiter position.
Check the continuity between connections AP43 and 3FX of component 1081
(Mégane II) or component 1546 (Scénic II) in the cruise control position.
If these checks show incorrect values, replace the main switch.
Check the insulation, continuity, and the absence of interference resistance on the
following connections:
– Connection code 3FX,
– Connection code3PD.
Between components 1081 and 120 (Mégane II).
Between components 1546 and 120 (Scénic II).
Also check the engine management computer connectors.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
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.