38C-90
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V3 MR-413-X44-38C050$180.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault finding chart38C
Bosch 8.1 ESP
Vdiag No.: 05
ALP4 Drift
NOTESOnly address this customer complaint after a complete check with the diagnostic tool.
Disconnect one wheel speed sensor.
Start the engine and check that only the ABS
and ESP fault warning lights are lit.
Is the brake fault warning light also lit?Do not drive, the "braking compensator" function
cannot be carried out (risk of a spin).
Deal first with the faults using the diagnostic tool.
Drive the vehicle and operate the brakes.
Is the customer complaint still present
under these conditions?It is a road holding fault not related to the ABS/ESP
system.
Check the condition and conformity of the front and
rear brake linings.
Check that the 4 vehicle tyres are identical and in
accordance with the manufacturer's
recommendations (see MR 411, Mechanical, 35A,
Wheels and tyres, Tyre pressure, Identification
and Tyres, Identification).
Check that the pressures of the 4 tyres conform to
the manufacturer's recommendations (see MR 411,
Mechanical, 35A, Wheels and tyres, Tyre
pressure, Identification).
Check and adjust the wheel alignment (see MR 411,
Mechanical, 30A, General information, Front
axle, Adjustment).
Normal behaviour linked to the system operation during the
regulation phase, mainly on surfaces with uneven grip or
which are poorly laid.
YES
NO
YES
NO
ESP_V05_ALP4
38C-100
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V3 MR-413-X44-38C050$180.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault finding chart38C
Bosch 8.1 ESP
Vdiag No.: 05
ALP14 Erratic ESP regulation
NOTESOnly address this customer complaint after a complete check with the diagnostic tool.
Check that the 4 vehicle tyres are identical and in accordance with the manufacturer's recommendations (see
MR 411, Mechanical, 35A, Wheels and tyres, Tyres, Identification).
Check that the pressures of the 4 tyres conform to the manufacturer's recommendations (see MR 411,
Mechanical, 35A, Wheels and tyres, Tyre pressure, Identification).
Using the diagnostic tool, check that the vehicle version corresponds to the vehicle type.
If necessary, reconfigure the vehicle version using command VP004 Vehicle parameters to correspond to the
vehicle type.
Using parameter PR030 Tachometric index, check that the tachometric index corresponds to the vehicle type.
If necessary, reconfigure the tachometric index using command VP007 Tachometric index to correspond to the
vehicle.
Check the connection and condition (possible wiring damage) of the connector of component 1175.
If the connector is faulty (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair), repair the connector, otherwise replace the wiring.
Check that component 1175 is properly mounted on the body and in the correct direction (the arrow must point
towards the front of the vehicle).
Calibrate component 583 using command VP003 Steering wheel angle sensor (see Configurations and
programming).
Clear the ESP sensor offsets using command RZ011 Sensor offsets.
Clear the faults from the computer using the command RZ001 "Fault memory".
Carry out a road test followed by another check with the diagnostic tool.
If the fault is still present:
–Adjust the axle geometry (see MR 411, Mechanical, 30A, General information, Front axle, Adjustment).
–Calibrate component 583 using command VP003 Steering wheel angle sensor (see Configurations and
programming).
–Clear the ESP sensor offsets using command RZ011 Sensor offsets.
–Clear the faults from the computer using the command RZ001 "Fault memory".
–Carry out a road test followed by another check with the diagnostic tool.
If the fault is still present, contact the Techline.
ESP_V05_ALP14
