Page 136 of 204

13B-136
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
13B
DCM 1.2 Injection
Program no.: 4C
Vdiag No.: 08
ET122BRAKE CONTACT SIGNAL No. 1
NOTESSpecial notes:
Carry out the checks only if the INACTIVE and ACTIVE 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.
STATUS INACTIVE: Brake pedal depressed.
If the brake lights are working:
– Check and ensure the continuity of connection 5A between the connector of the brake light switch, component
code 160 and the connector of the computer, component code 120.
If the brake lights are not working:
– Check the condition and fitting of the brake light switch and brake lights fuse.
– 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
DCM1.2_V08_ET122
DIESEL INJECTION
Fault finding – Interpretation of statuses
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 173 of 204

13B-173
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
ALP12
CONTINUED 1
In this case, it may be the solenoid valve dynamic specification which is at fault (atmospheric pressure
resetting time). Final fault finding is carried out by measuring this specification on a special bench.
Check that solenoid valve casing does not have any splashes of fluid on it which may impede the breather (water,
engine oil, gearbox oil, brake fluid, coolant, mud, dust, or any other substance).
Instructions:
The solenoid valve must be set up 450 mm above the ground, in an area free from water, mud, or any other fluid.
Cleaning with a high pressure jet is forbidden.
Is there coolant present?
Is the solenoid valve subjected to significant fluctuations or impacts?
Instructions:
The solenoid valve must be correctly secured to its mounting.
Contact with the engine environment is forbidden.Follow the
recommendations below.
Check the turbocharger regulation control (no
partial jamming, etc.).Follow the recommendations below.
NOYES
NOYES
AA