Page 38 of 101

38C-38
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool
If the fault is still present, contact the Techline.
V3 MR-413-X44-38C050$101.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of faults38C
Bosch 8.1 ESP
Vdiag No.: 05
DF075
PRESENT
OR
STOREDSTEERING WHEEL ANGLE SENSOR SIGNAL
1. DEF: inconsistency
2. DEF: constant signal
NOTESConditions for applying the fault finding procedure to stored faults:
The fault is declared present after a road test.
1.DEF
NOTESSpecial notes:
Question the customer to find out if he regularly drives on
a speed track. If this is the case, follow the procedure below
but never replace component 583.
Clear the ESP offsets using command RZ011 Sensor offset.
Position the steering wheel straight ahead (the wheels must be directly in line with the vehicle) and read the value
of the steering wheel angle using the parameter PR033 "Steering wheel angle".
If the value is not close to 0 ± 5˚, calibrate component 583 using command VP003 Steering wheel angle sensor
(see Configurations and programming).
Clear the ESP sensor offsets using command RZ011 Sensor offset.
With the steering wheel horizontal and the front wheels set straight ahead, turn the steering wheel a quarter of
a turn to the left.
Using parameter PR033 Steering wheel angle, check that the steering wheel angle value is close to - 90.
With the steering wheel horizontal and the front wheels set straight ahead, turn the steering wheel a quarter of
a turn to the right.
Using parameter PR033 Steering wheel angle, check that the steering wheel angle value is close to + 90.
If the steering wheel angle values are not correct, replace component 583 (see MR 411, Mechanical, 36A,
Steering assembly, Steering column, Removal - Refitting).
Drive in a straight line.
If the steering wheel is not horizontal when the vehicle is driving in a straight line (the vehicle "pulls" to the left
or right):
Check the conformity of the tyres, pressures, wear and dimensions (see MR 411, 35A, Wheels and tyres, Tyres,
Identification and tyre pressure, Identification).
Replace the tyre(s) if necessary (see MR 411, 35A, Wheels and tyres, Tyres, Removal - Refitting).
Adjust the wheel alignment (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.
ESP_V05_DF075
Page 52 of 101

38C-52
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool
If the fault is still present, contact the Techline.
V3 MR-413-X44-38C050$101.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of faults38C
Bosch 8.1 ESP
Vdiag No.: 05
DF126
PRESENT
OR
STOREDCOMBINED SENSOR SIGNAL PLAUSIBILITY
NOTESSpecial notes:
If the fault appears while the vehicle is being driven on a steep gradient, during a very
tight turn or while the vehicle is being transported on a lorry, train, boat etc., with the
engine running, clear the fault and test drive, if possible, to check that the fault does
not return.
Conditions for applying fault finding procedures to stored faults:
The fault is declared present after a road test.
Check that component 1175 is fitted and attached correctly (the arrow indicating the front of the vehicle).
Check the conformity of the tyres (see MR 411, Mechanical, 35A, Wheels and tyres, Tyres: Identification
and Tyre pressure, Identification).
Check the axle assembly geometry (see MR 411, Mechanical, Chassis, 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 offset.
Re-establish dialogue with the ABS/ESP computer, and if no other fault is to be dealt with, clear the computer fault
memory.
Carry out a road test.
If the fault is still present, contact the Techline.
ESP_V05_DF126
Page 83 of 101

38C-83
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V3 MR-413-X44-38C050$160.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Interpretation of commands38C
Bosch 8.1 ESP
Vdiag No.: 05
AC195VEHICLE SPEED SIGNAL
NOTESConditions of use of the command.
Ignition on, engine stopped and vehicle speed zero.
This command is used to generate a speed other than 0 mph (0 km/h) at the computer's vehicle speed wire output
(connection 47F) for users of that signal (radio, sunroof, power-assisted steering).
This command has no visible effect on the dashboard speedometer needle.
Radio: Switch on the radio and check that the "adjustment of volume according to speed" function is active
(see 86A, radio).
Run the command AC195. During the command, you should hear the volume of the sound increase and then
decrease.
Variable electric power-assisted steering: Start the vehicle then return to the conditions of use of the command.
Turn the steering wheel from lock to lock using command AC195, to note a variation in the assistance level.
ESP_V05_AC195