Page 29 of 365

13B-29
MR-372-J84-13B200$216.mif
V13
DIESEL INJECTION
Fault finding – Fault summary table
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5C
13B
Tool
faultDiagnostic tool titleAssociated
DTCLevel 1 fault
warning light
(Orange
heater plugs
"on" indicator
light)Level 2 fault
warning light
(Red
overheating
warning light)No fault
warning
light onOBD
warning
light lit
DF047Computer feed voltage 615 1.DEF
DF049Refrigerant sensor
circuit530 CC.1/CO.0
DF050Brake switch circuit 5711.DEF/
2.DEF
DF051Cruise control/speed
limiter function5751.DEF/
2.DEF/
3.DEF
DF053Rail pressure
regulation function89 3.DEFCC.0/CC.1/CO/
1.DEF/2.DEF/
4.DEF/5.DEF/
6.DEF/7.DEF
DF054Turbocharging
solenoid valve control
circuit33CO/CC.0/CC.1/
1.DEF/
2.DEF/3.DEF
4.DEF/5.DEFCC.0
DF055Turbocharging
pressure regulation
circuit243 1.DEF/2.DEF
DF056Air flow sensor circuit 100CO.0/CC.1/
1.DEF/2.DEFCO.0/
CC.1/
1.DEF/
2.DEF
DF057Water in diesel fuel
detector circuit2264 X
DF058Oil temperature sensor
circuit195CC.0/
CO.1
DF059Misfiring on cylinder 1 301 X
DF060Misfiring on cylinder 2 302 X
Page 42 of 365

13B-42
MR-372-J84-13B200$252.mif
V13
DIESEL INJECTION
Fault finding – Interpretation of faults
EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
13B
DF008
CONTINUED 2
1.DEF
NOTESNone
Check the pedal potentiometer connections.
Check the injection computer connections.
Repair if necessary.
Check the continuity and absence of interference resistance of the following connections:
– connection code 3LS,
– connection code 3LR,
– connection code 3LT,
– connection code3LW,
– connection code 3LU,
– connection code 3LV.
between components 120 and 921.
If the connection or connections are faulty and there is a repair method (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, replace the pedal potentiometer.
2.DEF
NOTESNone
Check the mechanical condition of the accelerator pedal:
– locked in full load position,
– with the pedal blocked by an external component.
Repair if necessary.
Check the brake light switch.
Vary the position of the pedal and refer to the conformity check in order to check the operating values of the
accelerator pedal potentiometer.
If the values displayed are inconsistent, replace the accelerator pedal potentiometer.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
Page 77 of 365

13B-77
MR-372-J84-13B200$288.mif
V13
13B
DIESEL INJECTION
Fault finding – Interpretation of faults
DF050
PRESENT
OR
STOREDBRAKE SWITCH CIRCUIT
1.DEF: Open circuit or short circuit
2.DEF : Inconsistent signal
NOTESConditions for applying the fault finding procedure to a stored fault:
The fault is declared present after the brake pedal is depressed, or during a road test.
Special notes:
If the fault is present, the cruise control/speed limiter is deactivated.
Use bornier Elé.1681 or Elé.1590 for any operation on the injection computer
connectors.
WARNING
This fault may appear if the wiring harness has been damaged.
Follow the procedure described in the Wiring Check in the Introduction.
This check enables the condition and the conformity of the engine wiring harness to be checked.
1. DEF
NOTESNone
Check the brake pedal switch connections.
Check the condition and adjustment of the brake pedal switch.
Repair if necessary.
Check the conformity of the brake light switch:
For Mégane II and Scénic II without ESP:
Brake pedal released:
– continuity between connections 5A and BPT,
– infinite resistance between connections 65A and SP17.
Brake pedal depressed:
– infinite resistance between connections 5A and BPT,
– continuity between the connections 65A and SP17.
For Mégane II and Scénic II with ESP:
Brake pedal released:
– continuity between connections 5A and BPT,
– infinite resistance between connections 65G and SP17.
Brake pedal depressed:
– infinite resistance between connections 5A and BPT,
– continuity between the connections 65G and SP17.
AFTER REPAIRDeal with any faults.
Carry out a road test followed by another check with the diagnostic tool.
EDC16_V50_DF050/EDC16_V58_DF050/EDC16_V5C_DF050/EDC16_V18_DF050/EDC16_V1C_DF050/EDC16_V20_DF050EDC16
Program No.: C1
Vdiag no.: 18, 1C, 20,
50, 58, 5C
Page 205 of 365

13B-205
MR-372-J84-13B200$540.mif
V13
EDC16
Program No: C1
Vdiag No: 18, 1C, 20,
50, 58, 5CDIESEL INJECTION
Fault finding – Interpretation of statuses13B
ET704
ET705
BRAKE SWITCH NO. 1
BRAKE SWITCH NO. 2
NOTESSpecial note:
Statuses ET704 and ET705 should change status at the same time. In the event of
inconsistency, consult the interpretation of fault DF050 Brake switch circuit.
ACTIVE
or
INACTIVE
If the brake lights are working:
check the continuity and make sure there is no interference resistance on the following
connection:
Connection code 5A between components 160 and 120/645/119.
If there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Repair precautions), repair the wiring, otherwise replace it.
If the brake lights are not operational, check:
– the condition and fitting of the brake switch,
– the condition and conformity of the brake lights fuse,
– the conformity of the values in the following table:
disconnect the switch and carry out the following checks:
for Mégane II and Scénic II with ESP
Continuity between
connectionsInsulation between
connections
Switch pressed
(Brake pedal released)5A and BPT 65G and SP17
Switch released
(Brake pedal depressed)65G and SP17 5A and BPT
for Mégane II and Scénic II without ESP:
Continuity between
connectionsInsulation between
connections
Switch pressed
(Brake pedal released)5A and BPT 65A and SP17
Switch released
(Brake pedal depressed)65A and SP17 5A and BPT
For Laguna II:
Continuity between
connectionsInsulation between
connections
Switch pressed
(Brake pedal released)5A and SP13 65A and AP10
Switch released
(Brake pedal depressed)65A and AP10 5A and SP13
Replace the switch if the values obtained are not correct
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16_V50_ET704/EDC16_V58_ET704/EDC16_V5C_ET704/EDC16_V50_ET705/EDC16_V58_ET705/EDC16_V5C_ET705/
EDC16_V18_ET704/EDC16_V1C_ET704/EDC16_V20_ET704/EDC16_V18_ET705/EDC16_V1C_ET705/EDC16_V20_ET705