38C-41
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
DF087
PRESENT
OR
STOREDPROGRAMMING THE STEERING WHEEL ANGLE SENSOR
DEF: Programming not performed
NOTESNone.
Position the steering wheel horizontally and the front wheels set straight ahead.
Check and store the internal fault code of component 583 using parameter PR113 Steering wheel angle sensor
internal fault code.
The internal fault code of the steering wheel angle sensor must be 0, 10 or 11, if it is different, replace
component 583 (see MR 411, Mechanical, 36A, Steering assembly, Steering column, Removal - Refitting).
Calibrate component 583 using command VP003 Steering wheel angle sensor (see Configurations
and programming).
Clear the ESP sensor offsets using command RZ011 Sensor offsets.
Check the value of parameter PR033 Steering wheel angle.
The steering wheel angle value must be close to 0˚ ± 5˚.
ESP_V05_DF087
38C-42
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
DF090
PRESENT
OR
STOREDFRONT RIGHT-HAND WHEEL TARGET
NOTESPriorities when dealing with a number of faults:
Deal with fault DF026 Front right-hand wheel speed sensor circuit first if it is
present.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present during a road test.
Visually inspect the condition of the axle assemblies (impacts, deformations etc.) and the conformity and good
condition of the tyre mountings (see MR 411, Mechanical, 35A, Wheels and tyres, Tyres, Identification
and Tyre pressure, Identification).
Check that the braking system (condition of brake pads, sealing, sticking, bleed, bearing clearance, etc.) is in good
condition.
Visually inspect the condition of the target (for clogging, metallic contamination, bearing grease, etc.) and clean
using compressed air if necessary.
Check that the wheel speed sensor mounting is in good condition.
Check the sensor/target air gap through one wheel revolution (0.4 < front wheel air gap < 1.7 mm).
If the air gap is incorrect:
–Replace the instrumented bearing/wheel sensor mounting assembly if necessary (see MR 411, Mechanical,
31A, Front axle components, Hub carrier bearing: Removal - Refitting).
If the air gap is correct.
–Swap both front wheel speed sensors.
–Clear the computer fault memory.
–Carry out a road test followed by another check with the diagnostic tool.
–If the fault initially declared as DF090 has become DF091 Front left-hand wheel target, replace the magnetic
target (see MR 411, Mechanical, 31A, Front axle components, Front hub carrier bearing: Removal –
Refitting).
–If the fault remains on the same side, replace component 152 (see MR 411, Mechanical, 38C, Anti-lock
braking system, Front wheel speed sensor, Removal - Refitting).
ESP_V05_DF090
38C-43
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
DF091
PRESENT
OR
STOREDFRONT LEFT-HAND WHEEL TARGET
NOTESPriorities when dealing with a number of faults:
Deal with fault DF006 Front left wheel speed sensor circuit first if it is present.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present during a road test.
Visually inspect the condition of the axle assemblies (impacts, deformations etc.) and the conformity and good
condition of the tyre mountings (see MR 411, Mechanical systems, 35A, Wheels and tyres, Tyres,
Identification and Tyre pressure, Identification).
Replace the tyre(s) if necessary (see MR 411, Mechanical, 35A, Wheels and tyres, Tyres, Removal - Refitting).
Check that the braking system (condition of brake pads, sealing, sticking, bleed, bearing clearance, etc.) is in good
condition.
Visually inspect the condition of the target (for clogging, metallic contamination, bearing grease, etc.) and clean
using compressed air if necessary.
Check that the wheel speed sensor mounting is in good condition.
Check the sensor/target air gap through one wheel revolution (0.4 < front wheel air gap < 1.7 mm).
If the air gap is incorrect:
–Replace the instrumented bearing/wheel sensor mounting assembly if necessary (see MR 411, Mechanical,
31A, Front axle components, Hub carrier bearing: Removal - Refitting).
If the air gap is correct.
–Swap both front wheel speed sensors.
–Clear the computer fault memory.
–Carry out a road test followed by another check with the diagnostic tool.
–If the fault initially declared as DF091 has become DF090 Front right-hand wheel target, replace the magnetic
target (see MR 411, Mechanical, 31A, Front axle components, Front hub carrier bearing: Removal –
Refitting).
–If the fault remains on the same side, replace component 153 (see MR 411, Mechanical, 38C, Anti-lock
braking system, Front wheel speed sensor, Removal - Refitting).
ESP_V05_DF091
38C-44
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
DF092
PRESENT
OR
STOREDREAR RIGHT-HAND WHEEL TARGET
NOTESPriorities when dealing with a number of faults:
Deal with fault DF027 Rear right-hand wheel speed sensor circuit first if it is present.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present during a road test.
Visually inspect the condition of the axle assemblies (impacts, deformations etc.) and the conformity and good condition
of the tyremountings (seeMR 411, Mechanical systems, 35A, Wheels and tyres, Tyres, IdentificationandTy re
pressure, Identification).
Re place the tyre(s) if necessary (seeMR 411, Mechanical, 35A, Wheels and tyres, Tyres, Removal - Refitting).
Check that the braking system (condition of brake pads, sealing, sticking, bleed, bearing clearance, etc.) is in good
condition.
ESP_V05_DF092
38C-45
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
DF092
CONTINUED
Check that the wheel speed sensor mounting is in good condition.
Visually inspect the condition of the target (for clogging, metallic contamination, bearing grease, etc.) and clean
using compressed air if necessary.
For versions equipped with disc brakes:
Check the sensor/target air gap through one wheel revolution (0.1 < rear wheel air gap < 0.9 mm).
If the air gap is incorrect:
–Replace the instrumented bearing/wheel sensor mounting assembly (see MR 411, Mechanical, 33A, Rear axle
components, Rear hub carrier bearing: Removal - Refitting).
If the air gap is correct.
–Swap both rear wheel brake discs as well as the brake pads.
–Clear the computer fault memory.
–Carry out a road test followed by another check with the diagnostic tool.
–If the fault initially declared as DF092 has become DF093 Rear left-hand wheel target, replace
the instrumented bearing/wheel sensor mounting assembly (see MR 411 Mechanical, 33A, Rear axle
components, Rear hub carrier bearing: Removal - Refitting).
–If the fault remains on the same side, replace component 150 (see MR 411, Mechanical, 38C, Anti-lock
braking system, Wheel speed sensor, Removal - Refitting).
For versions equipped with drum brakes:
–Swap both rear wheel brake drums.
–Clear the computer fault memory.
–Carry out a road test followed by another check with the diagnostic tool.
–If the fault initially declared as DF092 has become DF093 Rear left-hand wheel target, replace the target
(see MR 411, Mechanical, 33A, Rear axle components, Rear brake drums, Removal - Refitting).
–If the fault remains on the same side, replace component 150 (see MR 411, Mechanical, 38C, Anti-lock
braking system, Rear wheel speed sensor, Removal - Refitting).
38C-46
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
DF093
PRESENT
OR
STOREDREAR LEFT-HAND WHEEL TARGET.
NOTESPriorities when dealing with a number of faults:
Deal with fault DF007 Left rear wheel speed sensor circuit first if it is present.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present during a road test.
Visually inspect the condition of the axle assemblies (impacts, deformations etc.) and the conformity and good
condition of the tyre mountings (see MR 411, Mechanical systems, 35A, Wheels and tyres, Tyres,
Identification and Tyre pressure, Identification).
Replace the tyre(s) if necessary (see MR 411, Mechanical, 35A, Wheels and tyres, Tyres, Removal - Refitting).
Check that the braking system (condition of brake pads, sealing, sticking, bleed, bearing clearance, etc.) is in good
condition.
ESP_V05_DF093
38C-47
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
DF093
CONTINUED
Check that the wheel speed sensor mounting is in good condition.
Visually inspect the condition of the target (for clogging, metallic contamination, bearing grease, etc.) and clean
using compressed air if necessary.
For versions equipped with disc brakes:
Check the sensor/target air gap through one wheel revolution (0.1 < rear wheel air gap < 0.9 mm).
If the air gap is incorrect:
–Replace the instrumented bearing/wheel sensor mounting assembly (see MR 411, Mechanical, 33A, Rear axle
components, Rear hub carrier bearing: Removal - Refitting).
If the air gap is correct.
–Swap both rear wheel brake discs as well as the brake pads.
–Clear the computer fault memory.
–Carry out a road test followed by another check with the diagnostic tool.
–If the fault initially declared as DF093 has become DF092 Rear right-hand wheel target, replace
the instrumented bearing/wheel sensor mounting assembly (see MR 411 Mechanical, 33A, Rear axle
components, Rear hub carrier bearing: Removal - Refitting).
–If the fault remains on the same side, replace component 151 (see MR 411, Mechanical, 38C, Anti-lock
braking system, Wheel speed sensor, Removal - Refitting).
For versions equipped with drum brakes:
–Swap both rear wheel brake drums.
–Clear the computer fault memory.
–Carry out a road test followed by another check with the diagnostic tool.
–If the initially declared fault DF093 became DF092 "Rear right-hand wheel target " , replace the target
(see MR 411 Mechanical system, 33A, Rear axle components, Rear brake drums, removal-refitting).
–If the fault remains on the same side, replace component 151 (see MR 411, Mechanical, 38C, Anti-lock
braking system, Rear wheel speed sensor, Removal - Refitting).
38C-48
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
DF098
PRESENT
OR
STOREDNO UCH MULTIPLEX SIGNAL
NOTESSpecial notes:
Even though this is stored in the computer, this fault does not cause the warning lights
to come on or a fault message, because the ESP system is not faulty.
Perform fault finding on the UCH (Passenger compartment connection unit) using
the diagnostic tool.
Note:
After repairing the fault in the UCH (Passenger compartment connection unit),
clear the fault memory in the ESP system.
Priority in the event of a number of faults:
Deal with fault DF152 Multiplex network first if it is present or stored.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present when the engine is started.
Check the UCH (Passenger compartment connection unit) using the diagnostic tool (see 87B, Passenger
compartment connection unit).
Run a multiplex network test (see 88B, Multiplex).
ESP_V05_DF098