Page 35 of 57

38C-35
AFTER REPAIRClear the computer memory using command RZ001 Fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-38C000$120.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of statuses38C
ABS BOSCH 8.1
Vdiag No.: 18
ET017
CONTINUED 2
Depressed STATUS: Brake pedal released.
– Check the condition and fitting of the brake light switch and fuse F16 of the brake lights.
– Remove and test the operation of the brake light switch:
Continuity between the following
connections:Insulation between the following
connections:
Switch
depressed(Brake
pedal released)5A and AP10 65A and AP10
Switch released (Brake
pedal depressed)65A and AP10 5A and AP10
If the connection or connections are 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.
Check and ensure the insulation to +12 V of connection 65A between the connector of the brake light switch,
component code 160 and the connector of the ABS computer, component code 118.
If the fault is still present, contact the techline.
Page 39 of 57

38C-39
AFTER REPAIRClear the computer memory using command RZ001 Fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-38C000$150.mif
38C
ABS BOSCH 8.1
Vdiag No.: 18
AC003
AC004
AC005
AC006FRONT LEFT-HAND WHEEL SOLENOID VALVESFRONT RIGHT-HAND WHEEL SOLENOID VALVES
REAR LEFT-HAND WHEEL SOLENOID VALVES
REAR RIGHT-HAND WHEEL SOLENOID VALVES
NOTESConditions of use of the command:
Ignition on, engine stopped and vehicle speed zero.
Before running the commands, check that the battery is properly charged (see 80A,
Battery, Battery: Customer complaints).
These commands test the solenoid valves on each wheel.
Controlling the wheel solenoid valves to check the hydraulic system
Lift the vehicle in order to be able to check that the wheels turn freely. Keep the brake pedal depressed to prevent
the wheel being tested from being turned by hand (do not brake so firmly that full braking power is reached).
Select and confirm the command of the wheel being examined (e.g. Front left-hand wheel solenoid valves, etc.).
Turn the wheel concerned by hand; you should see it go through the locking/unlocking cycles.
ABS8.1X76_V18_AC003/ABS8.1X76_V18_AC004/ABS8.1X76_V18_AC005/ABS8.1X76_V18_AC006
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of commands
Page 40 of 57
38C-40
AFTER REPAIRClear the computer memory using command RZ001 Fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-38C000$150.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of commands38C
ABS BOSCH 8.1
Vdiag No.: 18
AC013WHEEL SPEED SENSOR SUPPLY TEST
NOTESConditions of use of the command:
Ignition on, engine stopped and vehicle speed zero.
Before running the command, check that the battery is properly charged (see 80A,
Battery, Battery: Customer complaints).
You must use command AC013 once only.
This command is used to check that voltage pulses of approximately 12 V are detected on the faulty sensor by a
multimeter on the connector terminals on the computer side, component codes 150, 151, 152, and 153.
Select the command AC013.
Note:
To restart an AC013 command, restart then stop the vehicle engine and ensure that the battery is properly
charged.
ABS8.1X76_V18_AC013
Page 41 of 57
38C-41
AFTER REPAIRClear the computer memory using command RZ001 Fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-38C000$150.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of commands38C
ABS BOSCH 8.1
Vdiag No.: 18
AC016PUMP MOTOR TEST
NOTESConditions of use of the command:
Ignition on, engine stopped and vehicle speed zero.
Before running the command, check that the battery is properly charged (see 80A,
Battery, Battery: Customer complaints).
This command is used to test the pump motor control circuit.
Select the command AC016.
The motor must run for 5 seconds.
ABS8.1X76_V18_AC016
Page 42 of 57
38C-42
AFTER REPAIRClear the computer memory using command RZ001 Fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-38C000$150.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of commands38C
ABS BOSCH 8.1
Vdiag No.: 18
SC001CHECK THE TARGET TEETH
NOTESConditions of use of the command:
Ignition on, engine stopped and vehicle speed zero.
Before running the command, check that the battery is properly charged (see 80A,
Battery, Battery: Customer complaints).
This command is used to check the number of teeth on the target.
Select the command SC001.
The test result should be equal to 48 or 44 teeth depending on the version.
ABS8.1X76_V18_SC001
Page 43 of 57
38C-43
AFTER REPAIRClear the computer memory using command RZ001 Fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-38C000$150.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of commands38C
ABS BOSCH 8.1
Vdiag No.: 18
SC006BLEEDING THE HYDRAULIC UNIT AND BRAKE CIRCUITS
NOTESConditions of use of the command:
Ignition on, engine stopped and vehicle speed zero.
Before running the command, check that the battery is properly charged (see 80A,
Battery, Battery: Customer complaints).
This command must be used only in the event of abnormal lengthening of brake pedal travel during a road test with
ABS regulation (the vehicle must have already been bled using the conventional procedure).
Select command SC006 and follow the instructions given by the diagnostic tool.
ABS8.1X76_V18_SC006
Page 45 of 57

38C-45
AFTER REPAIRClear the computer memory using command RZ001 Fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-38C000$170.mif
38C
ABS BOSCH 8.1
Vdiag No.: 18
ALP1 No dialogue with the ABS computer
NOTESUse the Wiring Diagrams Technical Note for KANGOO VLL.
Try to establish dialogue with a computer on another vehicle to check that the diagnostic tool is not faulty. If the
tool is not causing the fault and dialogue cannot be established with any other computer on the same vehicle, it
may be that a faulty computer is disrupting fault finding line HK.
Use a process of successive disconnections to locate this computer.
Check the battery voltage and carry out the necessary operations to obtain a correct voltage between 9.8 V < X <
16.7 V.
Check the presence and condition of the ABS fuses on the passenger compartment fuse box, component code
260, F17 and in the engine fuse box, component code 710, F01 and F10, (see MR 374 Mechanical, 81C, Fuses,
Fuses: List and location of components).
Check the connection of the ABS computer connector, component code 118 and the condition of its connections.
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 earths on the MQ connections of component 118 (good condition, not corroded, tightness of the earth
bolt on top of the ABS assembly).
Check that the supply to the computer is correct:
–Earth on the MQ connections of component 118,
–+ before ignition feed on connections BP14 and BP8 of component 118,
–+ after ignition feed on connection AP5 of component 118.
If the connection or connections are 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.
Check the connection of the diagnostic socket connector, component code 225 and the condition of its
connections.
Check the continuity of connection HL and HK between the computer and the diagnostic socket.
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.
A
ABS8.1X76_V18_ALP1
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault Finding Chart
Page 48 of 57
38C-48
AFTER REPAIRClear the computer memory using command RZ001 Fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-38C000$170.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault Finding Chart38C
ABS BOSCH 8.1
Vdiag No.: 18
ALP2
CONTINUED
Check that the wheel speed sensor mounting is in good condition (clipping).
Visually inspect the condition of the target (clogging, metallic contamination, etc.) and clean with compressed air
if necessary.
Check the condition of the braking system (condition of linings, sealing, grating, bleed, etc.).
Check the condition of the axles and the conformity and good condition of the tyre mountings.
If the fault is still present after these checks, contact the Techline.