Wheel Speed Sensor: Testing and Inspection

Wheel Sensor Inspection





1. Check the magnetic encoder (A) or pulser (B) after cleaning it. If necessary, replace the encoder or pulser.
2. Measure the air gap between the wheel sensor (C) and the magnetic encoder or pulser all the way around while rotating the encoder or pulser.
Standard:
Front: 0.5 - 1.2 mm (0.02 - 0.05 inch)
Rear: 0.4 - 1.1 mm (0.02 - 0.04 inch)