Fault Code 5500

Fault Code 5500

Wheel Speed Monitoring
The fault is stored if the average speed of one wheel differs by at least 5 % from the speed of the other wheels for longer than 20 s or if one or more wheels are controlled for longer than 60 s.

Diagnostic conditions
- Vehicle speed > 20 km/h (for at least 80 s)

Possible cause of fault
- Incorrect tyre pressure or wheel size (collapsible wheel, spare wheel)
- Play in wheel bearing is too large
- Toothed ring/pulse ring is soiled or damaged
- Incorrect or faulty speed sensor
- PSM control unit faulty


Diagnosis/troubleshooting

Work Instruction 1 - 5:

NOTE: If other faults in the PSM are indicated, then remedy these first.