C0040 29

C0040 29

Right Front Wheel Speed Sensor Circuit, Sensor Dropout







Fault symptom
- ABS warning lamp on
- Messages shown in SID.
- Steering column lock not working.

On-board diagnosis

Type of diagnosis:
- Continuous

Enable criteria:
- Vehicle speed over 40 km/h

Fault criteria:
- Control module receives incorrect/no data from the sensor

System reaction to a fault:
- No ABS function
- No TCS/ESP function

Checking the wiring harness
- Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:
- Electrical fault in connecting leads or component.

Functions in the diagnostic tool related to the fault:

Test value:
- Wheel Speed RF
(See also description of readings/activations in diagnostic tool)