Incorrect Tone Wheel

Test 29:

Symptom
INCORRECT TONE WHEEL

When Monitored
1. Ignition on.
2. Vehicle speed above 40 km/h (24 mph) on all our wheels for more than 2 minutes.

Set Condition:
The CAB counts the number of pulses from the wheel speed sensors and compares the values. If the CAB determines that one or both of the front wheel speed sensor signals are significantly different then the rear speed signals, the DTC is set.

POSSIBLE CAUSES
INCORRECT TONE WHEEL