13B-71
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF098
PRESENTFUEL TEMPERATURE SENSOR CIRCUITCO.1: Open circuit or short circuit to +12 volts
CC.0: Short circuit to earth
NOTESNone.
Check the connection and condition of the 2-track connector of the fuel temperature sensor.
Repair if necessary.
Check the connection and condition of the computer 48-track brown connector B.
Repair if necessary.
Measure the resistance at the fuel temperature sensor terminals.
Replace the fuel temperature sensor if the resistance is not approximately 2.2 kΩ at 25°C.
Check the insulation, continuity and the absence of interference resistance on the following connections:
Sensor connector track 1 track G2 computer connector B
Sensor connector track 2 track G3 computer connector B
Repair if necessary.
DDCR_V44_DF098P/DDCR_V48_DF098P
13B-73
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF112
STOREDCYLINDER REFERENCE SENSOR CIRCUIT1.DEF: No signal
2.DEF: Inconsistency
NOTESConditions for applying fault finding procedures to stored faults:
The fault is declared present with the engine under the starter or when idling.
Check the connection and condition of the 3-track connector of the cylinder reference sensor.
Repair if necessary.
Check the connection and condition of the computer 48-track brown connector B.
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance on the following connections:
Sensor connector track 2 Track E2 computer connector B
Sensor connector track 1Track E3 computer connector B
If necessary replace the sensor.
Check the timing setting using the appropriate Workshop Repair Manual.
DDCR_V44_DF112M/DDCR_V48_DF112M
13B-74
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF113
PRESENTSENSOR SUPPLY VOLTAGE1.DEF: At minimum limit
2.DEF: At maximum limit
NOTESSpecial notes:
If DF113, the engine stops immediately and cannot be restarted. The level 1 warning
light illuminates along with the message Faulty injection.
Check the condition and connection of the connectors of all sensors with a 5 V feed.
– Refrigerant pressure sensor
– Pressure sensor and inlet manifold temperature sensor
– Rail pressure sensor
– Pedal sensor gang 1
– EGR valve position sensor
– Flow sensor.
Repair if necessary.
Check the condition and connection of computer connectors A, B, and C.
Repair if necessary.
To locate any internal fault in one of the sensors with a 5 V supply (short circuit), disconnect each of the sensors
on the list above in turn, checking after each disconnection whether the fault changes status from present to
stored.
If the faulty sensor is located, check its connections and that it is in order. If necessary replace the sensor.
Connect the bornier in place of the computer and check the insulation, continuity and the absence of
interference resistance on the following connections:
Computer connector C track C4 Track B refrigerant pressure sensor
Computer connector B track C1 Track 3 inlet pressure - temperature sensor
Computer connector B track D1 Track 3 rail pressure sensor
Computer connector A track G2 Track 3 pedal sensor gang 1
Computer connector B track B1 Track 2 EGR valve position sensor
Computer connector B track A1 Track 3 of the flowmeter
Repair if necessary.
If the fault is still present, apply the fault finding procedure for each sensor with a 5 V supply.
DDCR_V44_DF113P/DDCR_V48_DF113P
13B-75
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF114
STOREDEGR SOLENOID VALVE CIRCUIT
1.DEF: At minimum limit
2.DEF: At maximum limit
3.DEF: Inconsistency
4.DEF: Valve jammed
5.DEF: Valve clogged
NOTESPriority when dealing with a number of faults:
– DF113 Sensor supply voltage.
Special notes:
If fault DF114 is present: the engine is unstable and may even stall. Starting difficult or
even impossible when cold, smoke emissions and loss of performance possible. On
status 4.DEF, the level 1 warning light illuminates with the message Faulty injection
displayed on the instrument panel.
Conditions for applying fault finding procedures to stored faults:
The fault is present with the engine running.
See Technical Note Wiring Diagrams of the vehicle concerned.
Check the connection and condition of the EGR valve connector, component code 169.
Check the connection and condition of connector B (brown 48-track) of the injection computer, component
code120.
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 +12 V on connection 3FB2 of component 169.
If the connection is 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 insulation and continuity of the following connections:
–3GB between components 169 and 120,
–3FB2 between components 169 and 1337.
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.
DDCR_V44_DF114M/DDCR_V48_DF114M
13B-78
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF121
STOREDACCELEROMETER CIRCUIT
NOTESPriorities when dealing with a number of faults :
DF001 Coolant temperature sensor circuit,
DF002 Air temperature sensor circuit,
DF098 Fuel temperature sensor circuit,
DF003 Atmospheric pressure sensor circuit.
A fault on these sensors could lead to incorrect fault finding on the accelerometer.
Conditions for applying fault finding procedures to stored faults:
The fault is present with the engine idling.
Check the conformity of the injectors fitted to the vehicle in relation to the type of vehicle and engine number
(low, high or very high pressure injector).
Check the condition and connection of the accelerometer connector.
Repair if necessary.
Check the connection and condition of the brown 48-track connector B of the computer and check the sensor
shielding on track K1.
Repair if necessary.
Check the insulation, continuity and the absence of interference resistance on the following connections:
Sensor connector track 1 Track F1 computer connector B
Sensor connector track 2 Track G1 computer connector B
Repair if necessary.
Check that the C2I is correctly entered on the computer.
Check that the accelerometer is secured on the engine.
Disconnect and reconnect the accelerometer sensor to accomplish fast programming.
Carry out a road test followed by another check with the diagnostic tool.
If the fault is still present, replace the accelerometer.
13B-80
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF122
CONTINUED
C0.1NOTESNone.
Check the connection and condition of the pedal potentiometer connector.
Repair if necessary.
Check the connection and condition of the black 32-track connector A of the computer.
Repair if necessary.
Measure the resistance between tracks 2 and 6 of the pedal potentiometer.
Replace the pedal potentiometer if the resistance is not 2.85 kΩ +
2.05 Ω.
Disconnect computer connector A and the pedal potentiometer connector.
– Check the insulation on connector A between tracks F2 and F4.
– Check the insulation against +12 V of the connection on track F2 on computer connector A.
Repair if necessary.
Check the continuity, insulation, and the absence of interference resistance on the following connections:
Sensor connector track 1 Track F1 computer connector B
Sensor connector track 2 Track G1 computer connector B
Repair if necessary.
13B-82
AFTER REPAIRDeal with any faults declared by the diagnostic tool. Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V4 MR-372-J84-13B000$062.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DDCR INJECTION
Vdiag No.: 44, 48
DF1070
PRESENT
OR
STOREDCOLD LOOP
1.DEF: Jammed component
NOTESConditions for applying fault finding procedures to stored faults:
The fault is declared present with the engine running and with a climate control request.
Priorities when dealing with a number of faults:
– DF049 Refrigerant sensor circuit if it is present or stored.
When the fault is present or stored, the heating and air conditioning system is inhibited. There is no longer any air
conditioning.
Check fuse F22 (10 A) of the UPC, component code 1337.
Check the connector of the air conditioning compressor, component code 171.
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Check the wiring of the air conditioning compressor.
If the wiring is faulty and there is a repair procedure (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
Manually check if the compressor is jammed (turn the clutch plate manually to check that there is no point of
resistance). In the event of jamming, replace the air conditioning compressor (see MR 364 (Mégane II), MR 370
(Scénic II), Mechanical, 62A, Air conditioning, Compressor: Removal - Refitting).
Top up the refrigerant, check for any leaks, and repair if necessary (see MR 364 (Mégane II), MR 370 (Scénic II),
Mechanical, 62A, Air conditioning, Refrigerant circuit: Draining - Filling).
DDCR__V44_DF1070 / DDCR_V48_DF1070
13B-83V4 MR-372-J84-13B000$070.mif
13B
DDCR INJECTION
Vdiag No.: 44, 48
MAIN STATUSES AND PARAMETERS OF THE COMPUTER:
NOTESOnly check conformity after a full check with the diagnostic tool.
The values shown in this conformity check are given as examples.
Application conditions: Engine off, ignition on.
FunctionParameter or Status
Check or actionDisplay and notes Fault finding
Battery
voltagePR074: Battery
voltage12 V < PR074 < 13.5 VIf there is a fault, apply the
fault finding procedure for the
"Charge circuit".
Engine speedPR055: Engine
speedIndicates the engine's speed of
rotation in rpm.In the event of a fault, apply
the fault finding procedure for
DF005 "Engine speed sensor
circuit".
Accelerator
pedal positionPR030: Accelerator
pedal position.
0%Indicates the position of the
accelerator pedal as a %.
PR030 = 0 %In the event of a fault, apply
the fault finding procedure for
Pedal sensor circuit gang 1
and gang 2
(DF008 and DF009)
and DF113 Sensor supply
voltage.
Coolant
temperaturePR064: Coolant
temperature.
Warm: 90 °CIndicates the coolant
temperature in °C.
Default value: 80°CIn the event of a fault, consult
the interpretation of
parameter PR064 Coolant
temperature.
External air
temperaturePR061: External air
temperatureGives the external air
temperature in °C. This
parameter is controlled by the
UCH and transmitted to the
injection via the multiplex
network.
Default value: 20°C.In the event of a fault, apply
the fault finding procedure for
this fault described in the
UCH document.
DIESEL INJECTION
Fault finding – Conformity check