ABS RENAULT KANGOO 2013 X61 / 2.G Diesel DCM 1.2 Injection Workshop Manual

13B-5V1 MR-376-X76-13B000$010.mif
DIESEL INJECTION
Fault finding – Introduction13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
4. FAULT FINDING PROCEDURE (continued)
Wiring check
Fault finding problems
Disconnecting the connectors and/or manipulating the wiring may temporarily clear the cause of a fault.
Electrical measurements of voltage, resistance and insulation are generally correct, especially if the fault is not
present when the analysis is made (stored fault).
Visual inspection
Look for damage under the bonnet and in the passenger compartment.
Carefully check the fuses, insulators and wiring harness routing.
Look for signs of oxidation.
Physical inspection
When handling the wiring, use the diagnostic tool to detect any change in the status of the faults from "stored" to
"present".
Make sure that the connectors are firmly secured.
Apply light pressure to the connectors.
Twist the wiring harness.
If there is a change in status, try to locate the source of the fault.
Inspection of each component
Disconnect the connectors and check the appearance of the clips and tabs, as well as the crimping (no crimping on
the insulating section).
Make sure that the clips and tabs are properly locked in the sockets.
Check that the clips or tabs have not been bent back during connection.
Check the clip contact pressure using an appropriate model of tab.
Resistance check
Check the continuity of entire lines, then section by section.
Look for a short circuit to earth, to + 12 V or with another wire.
If a fault is detected, repair or replace the wiring harness.

13B-13V1 MR-376-X76-13B000$030.mif
DIESEL INJECTION
Fault finding – System operation13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
Function: Air flow management
EGR valve control
The EGR system (Exhaust gas recirculation) comprises a proportional EGR valve, with a built-in valve position
feedback potentiometer. The EGR valve position is controlled by the potentiometer in a closed loop and/or by
changes in the estimated air flow.
Special feature of the K9K796 Euro 2 engine (Indonesia): The EGR solenoid valve is present on the vehicle, but not
used. It always remains closed. It must not be replaced on this vehicle (unless there is a mechanical fault).
Calculating the air flow
K9K 790 and 794 engines are not fitted with an air flowmeter. Instead, the amount of fresh inlet air is evaluated
based on the values supplied by the surrounding systems.
The (theoretical) air load is calculated using a model with various calculation parameters, which are:
– the inlet air temperature measured by a sensor located after the turbocharger and/or after the exchanger (if fitted),
– the turbocharging pressure,
– the atmospheric pressure (external air),
– the EGR valve position,
– the fuel flow,
– the engine speed.
The atmospheric pressure sensor is optional. If fitted, it sends back a signal relating to the atmospheric pressure to
an analogue port on the micro-controller. If not, atmospheric pressure is recovered based on the turbocharger
pressure and the engine field.
For K9K 792 and 796 engines, the flow of fresh air entering the engine is measured by a hot-wire ratiometric sensor.
This flowmeter is used to manage the amount of exhaust gas to be recirculated to ensure optimum recirculation
rates. A fresh air temperature sensor is integrated into the flowmeter. Air flow measurement allows closed-loop
control via the EGR valve.
Turbocharger control
K9K 796 engine:
The turbocharging system is made up of a solenoid valve which is used to control the wastegate to adjust the
absolute pressure of the inlet circuit.
K9K 790, 792, 794 engines:
The turbocharger system is controlled by the inlet pressure and does not need to be controlled by the computer.
Pre-postheating actuation
Pre-postheating actuation consists of controlling the heater plugs and the preheating warning light on the instrument
panel. The heater plugs are activated by a preheating unit (controlled by the injection computer), and the power is
supplied by the battery. After the ignition is switched on a preheating delay is activated. The indicator light comes on
for the activation period which is dependent on the battery voltage, atmospheric pressure and coolant temperature.
If the temperature is below a certain threshold, a postheating function can be used to improve the combustion
stability, and consequently engine operation (reducing unburnt particles and pollutant emissions).

13B-14V1 MR-376-X76-13B000$030.mif
DIESEL INJECTION
Fault finding – System operation13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
Functions included
Air conditioning management assistance
On models with air conditioning, the DCM 1.2 system allows the air conditioning to be deactivated under certain
operating conditions:
– when requested by the driver,
– when starting the engine,
– if the engine overheats (in order to reduce the power the engine has to supply),
– when the engine speed is kept at a very high level (to protect the compressor),
– during transition phases (eg. high acceleration demand for overtaking, anti-stalling and moving off). These
conditions are only taken into account if they do not occur repeatedly, so as to prevent system instabilities (erratic
deactivation),
– when certain faults appear.
Cold loop air conditioning management
The air conditioning system is a cold loop system and is managed by the injection computer which is responsible for:
– managing the cooling request according to passenger compartment controls and the refrigerant fluid pressure
value,
– calculating the power absorbed by the compressor from the refrigerant pressure,
– determining the fan unit commands according to the vehicle speed and the refrigerant fluid pressure.
The driver requests the air conditioning to be switched on by means of the ventilation selector coupled to a switch.
This cooling request may or may not be authorised depending on the refrigerant fluid pressure measured. If this
pressure is outside the operating limits, the cold loop program is not activated.
Thermal regulation of the passenger compartment heating circuit
Engines with direct injection systems are characterised by the direct injection of fuel into the combustion chamber.
This leads to heat being lost through the upper part of the engine and consequently, the cylinder head cooling
system is smaller in size.
The effect of this is that the temperature of the coolant which flows through this circuit rises more slowly. This
coolant is also used by the passenger compartment heating system. In very cold conditions, it is therefore difficult to
achieve a comfortable passenger compartment temperature quickly.
To reduce the time taken to warm up the system, air heating resistors, called passenger compartment heating
resistors, are fitted in the passenger compartment heating circuit. The DCM 1.2 injection computer determines
whether it is necessary to physically control the passenger compartment heating resistors. The injection computer
determines, on the one hand, limitation of the passenger compartment heating resistor power control depending on
the alternator charge, and on the other hand, the inhibition of the passenger compartment heating resistors
according to the engine speed, load and vehicle speed.Note:
Fan unit control requests are made from the injection computer.
These requests depend on the air conditioning, but also on the engine coolant temperature and vehicle speed.

13B-25
AFTER REPAIRDeal with any faults declared by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-13B000$071.mif
13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
DF001
PRESENT
OR
STOREDCOOLANT TEMPERATURE SENSOR CIRCUIT
CO.1: Open circuit or short circuit to +12 V
CC.0: Short circuit to earth
NOTESSpecial notes:
If fault DF001 is present, the preheating time is greater than 10 seconds and the
engine fan switches on at low speed (Fan assembly 1). If there is a fault on Fan
assembly 1, then Fan assembly 2 switches on (on vehicles fitted with air conditioning).
Use the Wiring Diagrams Technical Note for Logan, Sandero, Duster, Thalia 2/
Symbol 2 or Kangoo VLL.
Check the condition and connection of the coolant temperature sensor connector, component code 244.
Check the connection and condition of the injection computer connector, component code 120.
If the connectors are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or Technical
Note 9804A (Dacia), Electrical wiring repair, Wiring: Precautions for repair), repair the connectors, otherwise
replace the wiring.
Check the insulation, continuity and the absence of interference resistance on the following connections:
●3C between components 244 and 120,
●3JK between components 244 and 120,
●M (or NH) of component 244,
●42A between components 244 and 247.
If the connection(s) are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or
Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring,
otherwise replace it.
Measure the resistance of the coolant temperature sensor between connections 3JK and 3C of component 244.
11.5 k < X < 13,5 k at -10°C,
2140  < X < 2364  at 25°C,
773  < X < 851  at 50°C,
275  < X < 291  at 80°C,
112  < X < 118  at 110°C.
If the value is not correct, replace the coolant temperature sensor (see MR 388 (Logan/Sandero), MR 451
(Duster), MR 423 (Thalia 2/Symbol 2) or MR 374 (Kangoo VLL), Mechanical, 19A Cooling, Coolant
temperature sensor: Removal – Refitting).
DCM1.2_V08_DF001
DIESEL INJECTION
Fault finding – Interpretation of faults

13B-27
AFTER REPAIRDeal with any faults declared by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-13B000$071.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
DF002
CONTINUED
Check the insulation, continuity and the absence of interference resistance on the following connections:
●3B between components 120 and 799,
●3FB (or 3FBA) of component 799,
●NH of component 799.
If the connection(s) are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or
Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring,
otherwise replace it.
Measure the resistance of the air flow sensor to ensure that it is between:
41255  < X < 47492  at - 40°C,
14260  < X < 16022  at - 20°C,
5497  < X < 6050  at 0°C,
2353  < X < 2544  at 20°C,
1114  < X < 1186  at 40°C,
569  < X < 597  at 60°C,
310  < X < 322  at 80°C,
180  < X < 185  at 100°C.
If the value is not correct, replace the air flow sensor (see MR388 (Logan/Sandero), MR451 (Duster),
Mechanical, 12A Fuel mixture, Air flowmeter: Removal – Refitting).
If the fault is still present, replace the air flowmeter (see MR388 (Logan/Sandero), MR451 (Duster), Mechanical,
12A Fuel mixture, Air flowmeter: Removal – Refitting).
If the fault is still present, contact the Techline.

13B-29
AFTER REPAIRDeal with any faults declared by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-13B000$071.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
DF005
PRESENT
OR
STOREDENGINE SPEED SENSOR CIRCUIT1.DEF: Inconsistency
2.DEF: Inconsistency
3.DEF: Too many additional teeth
4.DEF: Teeth missing
5.DEF: Additional teeth
6.DEF: Too many teeth missing
NOTESSpecial notes:
If fault DF005, 1.DEF, 2.DEF, 3.DEF or 6.DEF is present: the engine stops and the
level 2 warning light comes on.
If fault DF005, 4.DEF or 5.DEF is present: engine performance is reduced to 75%, and
no warning light comes on.
Use the Wiring Diagrams Technical Note for Logan, Sandero, Duster, Thalia 2/
Symbol 2 or Kangoo VLL.
Conditions for applying the fault finding procedure to a stored fault:
The fault is present when the starter motor is operating or the engine is running at idle
speed.
Check the connection and condition of the engine speed sensor connector, component code 149.
Check the connection and condition of the injection computer connector, component code 120.
If the connectors are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or Technical
Note 9804A (Dacia), Electrical wiring repair, Wiring: Precautions for repair), repair the connector, otherwise
replace the wiring.
Check that the engine speed sensor is correctly fitted to the engine.
Check the insulation, continuity and the absence of interference resistance on the following connections:
●3BL between components 120 and 149,
●3BG between components 120 and 149.
If the connection(s) are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or
Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring,
otherwise replace it.
Measure the resistance of the engine speed sensor between connections 3BG and 3BL of component 149.
If the resistance of the engine speed sensor is not between 510  < X < 850  at 20°C, replace the sensor (see
MR 388 (Logan/Sandero) or MR 451 (Duster), MR 423 (Thalia 2/Symbol 2) or MR 374 (Kangoo VLL),
Mechanical, 13B Diesel injection, Crankshaft position sensor: Removal – Refitting).
Check that the flywheel ring gear is not defective (missing teeth).
If the fault is still present, contact the Techline.
DCM1.2_V08_DF005

13B-30
AFTER REPAIRDeal with any faults declared by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-13B000$071.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
DF007
PRESENT
OR
STOREDRAIL PRESSURE SENSOR CIRCUITCC.0: Short circuit to earth
CO.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 when dealing with a number of faults:
– DF113 Sensor supply voltage.
Conditions for applying the fault finding procedure to a stored fault:
The fault is declared present after the engine starts.
Special notes:
If fault DF007 is present, the engine stops and restarting is impossible.
Level 2 warning light comes on.
Use the Wiring Diagrams Technical Note for Logan, Sandero, Duster, Thalia 2/
Symbol 2 or Kangoo VLL.
Check the connection and condition of the rail pressure sensor connector, component code 1032.
Check the connection and condition of the injection computer connector, component code 120.
If the connectors are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or Technical
Note 9804A (Dacia), Electrical wiring repair, Wiring: Precautions for repair), repair the connector, otherwise
replace the wiring.
Check for + 5 V on connection 3LX of the rail pressure sensor, component code 1032.
Check for earth on connection 3LZ of the rail pressure sensor, component code 1032.
If the connection(s) are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or
Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring,
otherwise replace it.
Check the insulation, continuity and the absence of interference resistance on the following connections:
●3LX between components 120 and 1032,
●3LY between components 120 and 1032,
●3LZ between components 120 and 1032.
If the connection(s) are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or
Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring,
otherwise replace it.
If the fault is still present, the rail pressure sensor is faulty, replace the rail (see MR 388 (Logan/Sandero) or MR
451 (Duster), MR 423 (Thalia 2/Symbol 2) or MR 374 (Kangoo VLL), Mechanical, 13B, Diesel injection,
Injector rail: Removal – Refitting).
DCM1.2_V08_DF007

13B-31
AFTER REPAIRDeal with any faults declared by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-13B000$071.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
DF008
PRESENT
OR
STOREDPEDAL POTENTIOMETER CIRCUIT GANG 1CO.0: Open circuit or short circuit to earth
CC.1: Short circuit to +12 V
1.DEF: Inconsistency between pedal gang 1 and gang 2
2.DEF: No signal
3.DEF: Jammed component
NOTESPriority when dealing with a number of faults:
– DF113 Sensor supply voltage.
Special notes:
If fault DF008 is present: the engine speed is maintained above 1000 rpm (normal idle
speed with the brake pedal depressed) and the level 1 warning light comes on
(except 3.DEF).
If faults DF008 and DF009 Pedal potentiometer circuit gang 2 are present: engine
speed fixed at 1300 rpm, level 1 warning light lit.
Use the Wiring Diagrams Technical Note for Logan, Sandero, Duster, Thalia 2/
Symbol 2 or Kangoo VLL.
1.DEF
3.DEF
NOTESNone.
Disconnect the injection computer connector, component code 120 and the pedal potentiometer connector,
component code 921.
Check the insulation, continuity and the absence of interference resistance of the following connections:
●3LS between components 120 and 921,
●3LW between components 120 and 921.
If the connection(s) are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or
Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring,
otherwise replace it.
If the fault is still present, replace the pedal potentiometer (see MR 388 (Logan/Sandero), MR451 (Duster), MR
423 (Thalia 2/Symbol 2) or MR 374 (Kangoo VLL), Mechanical, 37A, Mechanical component controls,
Accelerator pedal: Removal – Refitting).
If the fault is still present, contact the Techline.
DCM1.2_V08_DF008

13B-32
AFTER REPAIRDeal with any faults declared by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-13B000$071.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
DF008
CONTINUED 1
CO.0
CC.1
2.DEF
NOTESNone.
Check the connection and condition of the pedal potentiometer connector, component code 921.
Check the connection and condition of the injection computer connector, component code 120.
If the connectors are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or Technical
Note 9804A (Dacia), Electrical wiring repair, Wiring: Precautions for repair), repair the connector, otherwise
replace the wiring.
Check the insulation, continuity and the absence of interference resistance on the following connections:
●3LR between components 120 and 921,
●3LS between components 120 and 921,
●3LT between components 120 and 921.
If the connection(s) are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or
Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring,
otherwise replace it.
Check for + 5 V on connection 3LR of the pedal potentiometer, component code 921.
Check for earth on connection 3LT of the pedal potentiometer, component code 921.
If the connection(s) are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or
Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring,
otherwise replace it.
Disconnect the injection computer connector and the pedal potentiometer connector.
Check the insulation, continuity and the absence of interference resistance on the following connections:
●3LS between components 120 and 921,
●3LW between components 120 and 921.
If the connection(s) are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or
Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring,
otherwise replace it.

13B-35
AFTER REPAIRDeal with any faults declared by the diagnostic tool.
Clear the computer memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-13B000$071.mif
DIESEL INJECTION
Fault finding – Interpretation of faults13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
DF009
CONTINUED 1
Check the continuity of the following connection:
●3LW between components 120 and 921.
If the connection is faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or Technical
Note 9804A (Dacia), Electrical wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise
replace it.
Measure the resistance between connections 3LV and 3LU of the pedal potentiometer, component code 921.
If the resistance is not between 1020  < X < 2380 , replace the pedal potentiometer (see MR 388 (Logan/
Sandero), MR 451 (Duster), MR 423 (Thalia 2/Symbol 2) or MR 374 (Kangoo VLL), Mechanical, 37A,
Mechanical component controls, Accelerator pedal: Removal – Refitting).
If the fault is still present, contact the Techline.
CC.1
NOTESNone.
Check the connection and condition of the pedal potentiometer connector, component code 921.
Check the connection and condition of the injection computer connector, component code 120.
If the connectors are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or Technical
Note 9804A (Dacia), Electrical wiring repair, Wiring: Precautions for repair), repair the connector, otherwise
replace the wiring.
Check the insulation, continuity and the absence of interference resistance on the following connections:
●3LU between components 120 and 921,
●3LV between components 120 and 921,
●3LW between components 120 and 921.
If the connection(s) are faulty and if there is a repair procedure (see Technical Note 6015A (Renault) or
Technical Note 9804A (Dacia), Repairing electrical wiring, Wiring: Precautions for repair), repair the wiring,
otherwise replace it.