Page 20 of 57
38C-20
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$090.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of faults38C
ABS BOSCH 8.1
Vdiag No.: 18
DF017
CONTINUED
Clear the computer memory using command RZ001 Fault memory, exit fault finding and switch off the ignition.
Carry out a new check using the diagnostic tool.
If the fault is still present, contact the Techline.
2.DEF
NOTESNone.
Use command VP004 Vehicle parameters on the fault finding tool to define the appropriate version for the
vehicle type. You must select the version that corresponds to the vehicle type.
Check that the vehicle parameters are included in the parameter PR063 Vehicle parameters.
If the fault is still present, contact the Techline.
Page 24 of 57

38C-24
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$090.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of faults38C
ABS BOSCH 8.1
Vdiag No.: 18
DF026
CONTINUED 2
1.DEFNOTESNone.
Visually inspect the condition of the target and sensor (for dirt, metallic contamination, bearing grease, etc.), and
clean using compressed air if necessary.
If there is a lot of grease on the target, contact the Techline.
Check that the wheel speed sensor mounting is in good condition (correct clipping).
Check the conformity of the target (condition, number of teeth = 48 or 44 depending on the version) with the specific
command SC001 Check target teeth.
If the checks are correct:
– clear the computer fault memory using the command RZ001 Fault memory,
– exit fault finding mode, switch off the ignition and carry out a road test.
Replace the instrumented bearing if the fault recurs.
If the fault is still present, contact the Techline.
Page 27 of 57

38C-27
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$090.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of faults38C
ABS BOSCH 8.1
Vdiag No.: 18
DF027
CONTINUED 2
1.DEFNOTESNone.
Visually inspect the condition of the target and sensor (for dirt, metallic contamination, bearing grease, etc.), and
clean using compressed air if necessary.
If there is a lot of grease on the target, contact the Techline.
Check that the wheel speed sensor mounting is in good condition.
Check the conformity of the target (condition, number of teeth = 48 or 44 depending on the version) with the specific
command SC001 Check target teeth.
If the checks are correct:
– clear the computer fault memory using the command RZ001 Fault memory,
– exit fault finding mode, switch off the ignition and carry out a road test.
Replace the instrumented bearing if the fault recurs.
If the fault is still present, contact the Techline.
Page 34 of 57
38C-34
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 1
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.
– Replace the switch if necessary.
– Check and ensure the presence of + after ignition feed on connection AP10 on the brake light switch
connector, component code 160.
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.
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