ABS Wheel Sensor Inspection

1. Clean the encoder or pulser, and make sure no metal is stuck to the encoder surface. Check the magnetic encoder (A) or pulser (B). If cracked or damaged, replace the encoder or pulser. Front wheel bearing replacement. Rear hub bearing unit replacement. 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 in.)
   | Rear: | 0.4−1.1 mm (0.02−0.04 in.)
| Front Rear