Page 137 of 204

13B-137
AFTER REPAIRDeal with any faults. Clear the faults from the computer memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
V1 MR-376-X76-13B000$100.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
ET122
CONTINUED 1
Only for K9K 790, 792, 794,
796 enginesContinuity between connections:Insulation between
connections:
Switch depressed (Brake pedal
released)5A and AP1 65A and AP1
Switch released (Brake pedal
depressed)65A and AP1 5A and AP1
If the connection or connections 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 wiring, otherwise replace it.
– If necessary, replace the switch (see MR 388 (Logan/Sandero), MR 451 (Duster), MR 423 (Thalia 2/Symbol
2) or MR 374 (Kangoo VLL), Mechanical, 37A, Mechanical component controls, Brake pedal: Removal -
Refitting).
– Check for + after ignition feed on connections AP1 or AP10 of the brake light switch connector.
Page 138 of 204

13B-138
AFTER REPAIRDeal with any faults. Clear the faults from the computer memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
V1 MR-376-X76-13B000$100.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
ET122
CONTINUED 2
STATUS ACTIVE: Brake pedal released.
– Check the condition and fitting of the brake light switch, the brake lights fuse and the conformity of the bulbs.
– Remove and test the operation of the brake light switch:
Only for K9K 714, 718, 740
enginesContinuity between connections:Insulation between
connections:
Switch depressed (Brake pedal
released)5A and AP10 65A and AP10
Switch released (Brake pedal
depressed)65A and AP10 5A and AP10
Only for K9K 790, 792, 794, 796
enginesContinuity between connections:Insulation between
connections:
Switch depressed (Brake pedal
released)5A and AP1 65A and AP1
Switch released (Brake pedal
depressed)65A and AP1 5A and AP1
If the connection or connections 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 wiring, otherwise replace it.
– If necessary, replace the switch (see MR 388 (Logan/Sandero), MR 451 (Duster), MR 423 (Thalia 2/Symbol
2) or MR 374 (Kangoo VLL), Mechanical, 37A, Mechanical component controls, Brake pedal: Removal -
Refitting).
– Check the insulation to + 12 V of connection 5A between the brake light switch connector and the computer
connector.
Page 139 of 204

13B-139
AFTER REPAIRDeal with any faults. Clear the faults from the computer memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
V1 MR-376-X76-13B000$100.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
ET233CLUTCH PEDAL
NOTESSpecial notes:
Carry out the checks only if the RELEASED and DEPRESSED statuses are not
consistent with the pedal position.
Use the Wiring Diagrams Technical Note for Logan, Sandero, Duster, Thalia 2/
Symbol 2 or Kangoo VLL.
Only for K9K 714, 718, 740 engines
"RELEASED" STATUS and clutch pedal depressed.
Check the condition and the fitting of the clutch switch, component code 675.
Check and ensure the continuity of connection 86D between the clutch switch connector and the injection
computer connector, component code 120.
Check and ensure the presence of earth on connection M or MK of component 675.
If the connection or connections 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 wiring, otherwise replace it.
Remove the clutch switch and check that it is operating correctly:
Continuity between tracks Insulation between tracks
Switch pressed (Clutch pedal
released)86D and M or MK -
Switch released (Clutch pedal
depressed)-86D and M or MK
If necessary, replace the switch (see MR 388 (Logan/Sandero), MR 451 (Duster), MR 423 (Thalia 2/Symbol 2)
or MR 374 (Kangoo VLL), Mechanical, 37A, Mechanical component controls, Clutch pedal: Removal -
Refitting).
DCM1.2_V08_ET233
Page 140 of 204

13B-140
AFTER REPAIRDeal with any faults. Clear the faults from the computer memory.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
V1 MR-376-X76-13B000$100.mif
DIESEL INJECTION
Fault finding – Interpretation of statuses13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
ET233
CONTINUED
DEPRESSED STATUS and clutch pedal released.
Check the condition and fitting of the clutch switch.
Remove the clutch switch and check that it is operating correctly:
Continuity between tracks Insulation between tracks
Switch pressed (Clutch pedal
released)86D and M or MK -
Switch released (Clutch pedal
depressed)-86D and M or MK
If necessary, replace the switch (see MR 388 (Logan/Sandero), MR 451 (Duster), MR 423 (Thalia 2/Symbol 2)
or MR 374 (Kangoo VLL), Mechanical, 37A, Mechanical component controls, Clutch pedal: Removal -
Refitting).
Check and ensure the insulation to earth on connection 86D between components 675 and 120.
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.
Page 151 of 204
13B-151
AFTER REPAIRCarry out a road test followed by a check with the diagnostic tool.
V1 MR-376-X76-13B000$150.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
ALP1
CONTINUED
Ensure that the diagnostic socket, component code 225, has properly power supply:
●+ Before ignition feed on connection BP56 or BP10 of component 225.
●+ After ignition feed on connection AP10 of component 225.
●Earth on connections MAM and NC or MK and NA of component 225.
If the connection or connections 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 wiring,
otherwise replace it.
If dialogue has still not been established after these checks, contact the techline.
A
Page 153 of 204
13B-153
AFTER REPAIRCarry out a road test followed by a check with the diagnostic tool.
V1 MR-376-X76-13B000$150.mif
DIESEL INJECTION
Fault finding – Fault Finding Chart13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
ALP2
CONTINUED 1
Is the timing set correctly? Carry out the necessary repairs.
Visually check the condition of the engine wiring harness.
Does the starter motor operate correctly (minimum engine
speed = 200 rpm)?Carry out the necessary repairs.
Is the compression in order? Carry out the necessary repairs.
Using the diagnostic tool, check that the injector codes (C2I) are correctly entered on the identification screen.
If not, configure the correct injector codes using command SC002 Enter injector codes
Is PR038 Rail pressure less than 50 bar under + after
ignition feed?Apply the fault finding procedure for
DF007 Rail pressure sensor
circuit.
A
NO
YES
NO
YES
NO
YES
NO
B
YES
Page 191 of 204

13B-191V1 MR-376-X76-13B000$160.mif
DIESEL INJECTION
Fault finding – Tests13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
TEST 6 High pressure system check
NOTESSpecial note:
Certain faults make it impossible to carry out this test - deal with these first.
WARNING
Running the starter motor for more than 5 seconds is dangerous and serves no useful
purpose.
Preliminary Checks:
– Check for the presence of fuel
– Check that there is no air in the low pressure circuit. Apply TEST 1 Low pressure circuit check.
– Ensure that the correct fuel is being used. Apply TEST 13 Diesel fuel conformity check.
The pump's capacity to produce high pressure can be checked by the following procedure:
–With the ignition off, disconnect the low pressure actuator from the pump (IMV brown connector) and
connect a test IMV or the MOT adapter. 1711 adapter.
– Electrically disconnect the four injectors.
– Switch on the ignition, connect the diagnostic tool and re-establish dialogue with the injection system.
– Go to the Main computer statuses and parameters screen.
– Run the test cold, PR064 "Coolant temperature" < 30 °C or equal to ambient temperature.
–Activate the starter for 5 seconds.
– Read the maximum rail pressure value PR038 Rail pressure during the test on the diagnostic tool.
PR038 > 1050 bar?
A
NO
B
YES
DCM1.2_V08_TEST06
Page 192 of 204

13B-192V1 MR-376-X76-13B000$160.mif
DIESEL INJECTION
Fault finding – Tests13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
IMV = fuel flow actuator
TEST 6
CONTINUED
– Switch off the ignition, reconnect the electrical
connections to the four injectors and the low-pressure
actuator.
– Switch on the ignition again, and clear the injection
faults using the diagnostic tool.
– Check if there is no fuel leak in the high pressure
circuit. Run TEST 7 High pressure circuit sealing
check
– Check the conformity of the diesel filter. Run TEST 9
Diesel fuel filter check.
– Carry out fault finding on the injectors by checking the
return flow volume of the four injectors, run TEST 8
Injector return flow.
Is TEST 8 OK?The pump can supply the operating pressure.
Switch off the ignition, reconnect the electrical
connections
to the four injectors and the low pressure
actuator. Switch on the ignition again, and clear
the injection faults using the diagnostic tool.
– Check that there is no fuel leak in the high
pressure circuit, apply TEST 7 High pressure
circuit sealing check.
– Carry out fault finding on the injectors by
checking the return flow volume of the four
injectors, run TEST 8 Injector return flow.
If TEST 8 is correct, the high pressure fuel circuit
is correct.
Replace the faulty injector(s) (see MR
388 (Logan/Sandero), MR 451
(Duster), MR 423 (Thalia 2/Symbol 2)
or MR 374 (Kangoo VLL), Mechanical,
13B, Diesel injection, Diesel injector:
Removal - Refitting).Replace the high pressure pump (see MR 388 (Logan/Sandero),
MR 451 (Duster), MR 423 (Thalia 2/Symbol 2) or MR 374
(Kangoo VLL), Mechanical, 13B, Diesel injection, High
pressure pump: Removal - Refitting).
AB
YESNO