check engine light RENAULT SCENIC 2010 J95 / 3.G Engine And Pheripherals DCM 1.2 Injection Workshop Manual

13B-19V10 MR-372-J84-13B100$040.mif
DIESEL INJECTION
Fault finding – Function13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
Instrument panel display
The computer manages the data display on the instrument panel relating to engine operation. This covers five
functions: the OBD warning light for European On Board Diagnostics (EOBD), pre-postheating, coolant temperature,
and Level 1 (non critical fault) and Level 2 (emergency stop) engine faults. These five functions are represented by
five warning lights or messages displayed by the trip computer.
Pre-postheating warning light
This warning light indicates that preheating is active.
Engine coolant temperature warning light
This warning light is used as an engine overheating indicator.
–In the event of overheating, it is up to the driver whether to stop the vehicle or continue driving.
OBD warning light
The OBD fault warning light is used to warn the driver of the presence of injection faults producing excessive
pollution or that the EOBD system is deactivated.
The injection computer requests illumination of the OBD warning light for a present fault only after three consecutive
driving cycles.
The visual check of the warning light when the power is switched on (automatic test procedure managed by
the instrument panel) is carried out by the injection computer. It lasts 3 seconds or until the engine starts for
the New Twingo and Kangoo 2.
If a confirmed OBD fault causes the OBD warning light to come on, there should be no flashing after the warning
light illumination test. The instrument panel will also display the message: Check emission control.
The gearbox computer, if fitted, may also request the illumination of this warning light.
Level 1 warning
If there is a minor fault, the computer may request a level 1 warning to be displayed. Usually, the instrument panel
switches on the SERVICE warning light and sends out a "Check the injection" message. Refer to the operation of the
instrument panel (see 83A, instrument panel). Note:
This warning light comes on only if the vehicle is EOBD approved.
Note:
The SERVICE warning light will come on if the instrument panel is configured as cruise control - speed
limiter present, but the function has not yet been detected by the injection computer.

13B-34
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$090.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF005
PRESENT
OR STOREDENGINE SPEED SENSOR CIRCUIT1.DEF: Inconsistency
2.DEF: No signal
3.DEF: Too many additional teeth
4.DEF: Teeth missing
5.DEF: Additional teeth
6.DEF: Too many teeth missing
NOTESSpecial note:
If 1.DEF, 2.DEF, 3.DEF, or 6.DEF is present: the engine stops and the level 2 warning
light illuminates, with the message Faulty injection displayed on the instrument panel.
If 4.DEF or 5 DEF is present: the engine performance is reduced to 75% and the level
1 warning light illuminates.
Conditions for applying fault finding procedures to stored faults:
The fault is present when the starter motor is operating or the engine is running at idle
speed.
See the Technical Note Wiring Diagrams for the vehicle.
Check the connection and condition of the engine speed sensor connector, component code 149.
Check the connection and condition of connector B of the injection computer, component code 120.
If the connector(s) is 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.
Measure the resistance of the engine speed sensor, component code 149 between connections 3BL and 3BG.
If the resistance of the engine speed sensor, component code 149 is not between 510 Ω et 850 Ω (at 20
°C), replace
the engine speed sensor (see MR 364 (Mégane II), MR 370 (Scénic II), MR 385 (Modus), MR 392 (Clio III), MR
411 (New Twingo), MR 417 (Kangoo 2) Mechanical, 13B Diesel injection, Crankshaft position sensor:
Removal - Refitting).
Check the insulation and continuity of the following connections:
–3BG between components 149 and 120,
–3BL between components 149 and 120.
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.
If the fault is still present, replace the engine speed sensor, component code 149 (see MR 364 (Mégane II),
MR 370 (Scénic II), MR 385 (Modus), MR 392 (Clio III), MR 411 (New Twingo), MR 417 (Kangoo 2) Mechanical,
13B Diesel injection, Crankshaft position sensor: Removal - Refitting).
If the fault is still present, contact the Techline.
DCM1.2_V48_DF005/DCM1.2_V4C_DF005/DCM1.2_V50_DF005/DCM1.2_V54_DF005/DCM1.2_V58_DF005/DCM1.2_V5C_DF005

13B-35
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$090.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF007
PRESENT
OR STOREDRAIL PRESSURE SENSOR CIRCUITCC.0: Short circuit to earth
C0.1: Open circuit or short circuit to +12 V
1.DEF: Inconsistency
2.DEF: Below minimum threshold
3.DEF: Above maximum threshold
4.DEF: Value outside permitted tolerance
NOTESPriority for dealing with a combination of faults:
–DF113 Sensor supply voltage.
Conditions for applying fault finding procedures to stored faults:
The fault is declared present after the engine starts.
Special note:
If fault DF007 is present: the engine stops and cannot be restarted and the level 2
warning light illuminates, with the message Faulty injection displayed on the
instrument panel.
See the Technical Note Wiring Diagrams for the vehicle.
Check the connection and condition of the rail pressure sensor connector, component code 1032.
Check the connection and condition of connector B (brown 48-track) of the injection computer, component
code 120.
If the connector(s) is 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 +5 V on connection 3LX of component 1032.
Check for earth on connection 3LZ of component 1032.
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.
Check the insulation and continuity of the following connections:
–3LX between components 1032 and 120,
–3LY between components 1032 and 120,
–3LZ between components 1032 and 120.
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.
DCM1.2_V48_DF007/DCM1.2_V4C_DF007/DCM1.2_V50_DF007/DCM1.2_V54_DF007/DCM1.2_V58_DF007/DCM1.2_V5C_DF007

13B-37
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$090.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF008
PRESENT
OR STOREDPEDAL POTENTIOMETER CIRCUIT GANGED CIRCUIT 1CO.0: Open circuit or short circuit to earth
CC.1: Short circuit to +12 volts
1.DEF: Inconsistency between pedal gangs 1 and 2
2.DEF: No signal
3.DEF: Jammed component
NOTESPriority for dealing with a combination of faults:
–DF113 Sensor supply voltage.
Special note:
If fault DF008 is present: the idle speed is fast (1000 rpm), the engine performance is
reduced to 75%, and the level 1 warning light illuminates with the message Check
injection displayed on the instrument panel.
If DF008 and DF009 Pedal potentiometer circuit gang 2 are present: the engine
speed increases to 1300 rpm or 1700 rpm if the vehicle is fitted with a sequential
gearbox (fault on gangs 1 and 2), and the level 1 warning light illuminates with
the message Check injection displayed on the instrument panel.
Note: possible risk of the engine speed racing with no load for 1 second.
See the Technical Note Wiring Diagrams for the vehicle.
1.DEF
3.DEF
NOTESNone.
Disconnect connector A (black) of the injection computer, component code 120 and the connector of the pedal
potentiometer, component code 921.
Check the insulation between connections 3LS and 3LW of component 120.
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.
If the fault is still present, replace the accelerator pedal potentiometer, component code 921 (see MR 364
(Mégane II), MR 370 (Scénic II), MR 385 (Modus), MR 392 (Clio III), MR 411 (New Twingo), MR 417 (Kangoo 2),
Mechanical, 13B, Diesel injection, Accelerator pedal potentiometer: Removal - Refitting).
If the fault is still present, contact the Techline.
DCM1.2_V48_DF008/DCM1.2_V4C_DF008/DCM1.2_V50_DF008/DCM1.2_V54_DF008/DCM1.2_V58_DF008/DCM1.2_V5C_DF008

13B-40
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$090.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF009
PRESENT
OR STOREDPEDAL POTENTIOMETER TRACK 2 CIRCUITCO.0: Open circuit or short circuit to earth
CC.1: Short circuit to +12 volts
NOTESPriority for dealing with a combination of faults:
–DF122 Pedal potentiometer gang 2 supply voltage.
Special note:
If fault DF009 is present: the idle speed is fast (1000 rpm), the engine performance is
reduced to 75%, and the level 1 warning light illuminates with the message Check
injector displayed on the instrument panel.
If DF009 and DF008 Pedal potentiometer circuit gang 1 are present: the engine
speed increases to 1300 rpm or 1700 rpm if the vehicle is fitted with a sequential
gearbox (fault on gangs 1 and 2), and the level 1 warning light illuminates with
the message Check injection displayed on the instrument panel.
Note: possible risk of the engine speed racing with no load for 1 second.
See the Technical Note Wiring Diagrams for the vehicle.
CO.0
NOTESSpecial note:
None.
Check the connection and condition of the pedal potentiometer connector, component code 921.
Check the connection and condition of connector A (black 32-track) of the computer, component code 120.
If the connector(s) is 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 + 5 V on connection 3LU of component 921.
Check for earth on connection 3LV of component 921.
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.
Disconnect connector A of the computer, component code 120 and the connector of the pedal potentiometer,
component code 921.
Check the insulation against earth of connection 3LW on component 120.
If the connection is faulty and if there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
DCM1.2_V48_DF009/DCM1.2_V4C_DF009/DCM1.2_V50_DF009/DCM1.2_V54_DF009/DCM1.2_V58_DF009/DCM1.2_V5C_DF009

13B-51V10 MR-372-J84-13B100$090.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 50, 58
DF018
PRESENT
OR STOREDLOW SPEED FAN ASSEMBLY CONTROL CIRCUITCC.1: Short-circuit to +12 volts
CO.0: Open circuit or short circuit to earth
NOTESConditions for applying the fault finding procedure to stored faults:
The fault reappears after:
–the ignition is switched on,
–clearing the fault from the memory,
–the relay is actuated using command AC154 Low speed fan assembly.
Special notes:
–high-speed fan assembly constantly actuated,
–the level 1 warning light is illuminated.
–Use bornier Elé. 1681 for all operations on the connector of the engine management
computer.
–See the Technical Note Wiring Diagrams for the vehicle.
Check the connections of the low-speed fan assembly relay mounting, component code 700.
Check the connections of the engine management computer, component code 120.
If the connector(s) is 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.
Run command AC154 Low-speed fan assembly.
If the command does not work, with the ignition on, check for +12 V on connection 3FB of component 700
and the earth of connection 3JN of component 700.
Remove the low speed relay and check the continuity of the following connections:
–3FB between components 238 and 700,
–3JN between components 700 and 120.
If the fault is still present, check the relay and replace it if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
DCM1.2_V50_DF018/DCM1.2_V58_DF018

13B-52V10 MR-372-J84-13B100$090.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 50, 58
DF019
PRESENT
OR STOREDHIGH SPEED FAN ASSEMBLY CONTROL CIRCUITCC.1: Short circuit to +12 volts
CO.0: Open circuit or short circuit to earth
NOTESConditions for applying the fault finding procedure to stored faults:
The fault reappears after:
–the ignition is switched on,
–clearing the fault from the memory,
–relay actuated using command AC153 High speed fan assembly.
Special notes:
–the level 1 warning light is illuminated,
–risk of overheating and air conditioning cut-off.
–Use bornier Elé. 1681 for all operations on the connector of the engine management
computer.
–See the Technical Note Wiring Diagrams for the vehicle.
Check the connections of the high-speed fan assembly relay mounting, component code 234.
Check the connections of the engine management computer, component code 120.
If the connector(s) are faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair) repair the connector(s), otherwise replace the wiring.
Run command AC153 High speed fan assembly.
If the command does not work, with the ignition on, check for + 12 V on connection 3FB of component 234
and the earth of connection 3JP of component 234.
Remove the high speed relay and check the continuity of the following connections:
–3FB between components 238 and 234,
–3JP between components 120 and 234.
If the fault is still present, check the relay and replace it if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
DCM1.2_V50_DF019/DCM1.2_V58_DF019

13B-53
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$090.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF024
PRESENT OR
STOREDLOW-PRESSURE ACTUATOR CONTROL CIRCUITCO.0: Open circuit or short circuit to earth
CC.1: Short circuit to +12 volts
NOTESSpecial notes:
If fault DF024 is present with a C0 or CC.1: the level 2 warning light illuminates and,
depending on the vehicle, the level 1 warning light illuminates with the message
Faulty injection displayed on the instrument panel.
The fuel flow actuator is fully open, there is a clicking, and the engine is stopped
to prevent it from racing.
See the Technical Note Wiring Diagrams for the vehicle.
Check the connection and condition of the flow actuator connector, component code 1105.
Check the connection and condition of connector B (brown 48-track) of the injection computer, component
code 120.
If the connector(s) is 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 after ignition feed on connection 3FB1 or 3FB2 for New Twingo or 3FB3 for Kangoo 2 of
component 1105.
Check the insulation and continuity of the following connection:
–3HI between components 1105 and 120.
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.
Measure the resistance between connections 3HI and 3FB1 or 3FB2 for New Twingo or 3FB3 for Kangoo 2
of component 1105.
If the resistance of the flow actuator is not between 4.8 ΩΩ Ω Ω
and 5.8 ΩΩ Ω Ω
at 20
°C, replace the flow actuator (see MR
364 (Mégane II), MR 370 (Scénic II), MR 385 (Modus), MR 392 (Clio III), MR 411 (New Twingo), MR 417
(Kangoo 2), Mechanical, 13B, Diesel injection, Flow actuator: Removal - Refitting).
If the fault is still present, replace the low pressure actuator (see MR 364 (Mégane II), MR 370 (Scénic II), MR 385
(Modus), MR 392 (Clio III), MR 411 (New Twingo), MR 417 (Kangoo 2), Mechanical, 13B, Diesel injection,
Flow actuator: Removal - Refitting).
If the fault is still present, contact the Techline.
DCM1.2_V48_DF024/DCM1.2_V4C_DF024/DCM1.2_V50_DF024/DCM1.2_V54_DF024/DCM1.2_V58_DF024/DCM1.2_V5C_DF024

13B-55
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$090.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF026
PRESENT
OR STOREDCYLINDER 1 INJECTOR CONTROL CIRCUITC0: Open circuit
CC: Short circuit
1.DEF: At minimum stop
2.DEF: At maximum stop
NOTESConditions for applying fault finding procedures to stored faults:
The fault is present with the engine idling.
Special notes:
When fault DF026 occurs, the idle speed is locked at 1000 rpm, there is engine noise,
the engine speed is unstable, the engine performance is reduced to 75%, the level 1
warning light illuminates, and the message Check injector is displayed until the next
time the ignition is switched off.
See the Technical Note Wiring Diagrams for the vehicle.
C0 - CC
NOTESNone.
Switch off the ignition and wait 15 seconds.
Check the connection and condition of the cylinder 1 injector connector, component code 193.
Check the connection and condition of connector B (brown 48-track) of the injection computer, component
code 120.
If the connector(s) is 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.
Run command AC005 Cylinder 1 injector.
If injector 1 cannot be heard operating five times in a cycle, connect the wire of the cylinder 2 injector to
the cylinder 1 injector and run command AC006 Cylinder 2 injector.
Does this injector actuation cycle work?
Note:
If the wires cannot be swapped, continue the procedure by replying YES to the previous question.
DCM1.2_V48_DF026/DCM1.2_V4C_DF026/DCM1.2_V50_DF026/DCM1.2_V54_DF026/DCM1.2_V58_DF026/DCM1.2_V5C_DF026

13B-58
AFTER REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V10 MR-372-J84-13B100$100.mif
13B
DCM 1.2 Injection
Program No.: 4D
Vdiag No.: 48, 4C, 50,
54, 58, 5C
DF027
PRESENT
OR
STOREDINJECTOR CYLINDER 2 CONTROL CIRCUITC0: Open circuit
CC: Short circuit
1.DEF: At minimum stop
2.DEF: At maximum stop
NOTESConditions for applying fault finding procedures to stored faults:
The fault is present with the engine idling.
Special notes:
When fault DF027 occurs, the idle speed is locked at 1000 rpm, there is engine noise,
the engine speed is unstable, the engine performance is reduced to 75%, the level 1
warning light illuminates, and the message Check injector is displayed until the next
time the ignition is switched off.
See the Technical Note Wiring Diagrams for the vehicle.
C0 - CC
NOTESNone.
Switch off the ignition and wait 15 seconds.
Check the connection and condition of the cylinder 2 injector connector, component code 194.
Check the connection and condition of connector B (brown 48-track) of the injection computer, component
code 120.
If the connector(s) is 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.
Run command AC006 Cylinder 2 injector.
If injector 2 cannot be heard operating five times in a cycle, connect the wire of the cylinder 3 injector to
the cylinder 2 injector and run command AC007 Cylinder 3 injector.
Does this injector actuation cycle work?
Note:
If the wires cannot be swapped, continue the procedure by replying YES to the previous question.
DCM1.2_V48_DF027/DCM1.2_V4C_DF027/DCM1.2_V50_DF027/DCM1.2_V54_DF027/DCM1.2_V58_DF027/DCM1.2_V5C_DF027
DIESEL INJECTION
Fault finding – Interpretation of faults