Wheel Speed Sensor: Description and Operation
Front Wheel Speed Sensor:
Rear Wheel Speed Sensor:
A wheel speed sensor is present at each front wheel bearing assembly and at each rear wheel bearing assembly. The sensors transmit wheel speed information to the Electronic Brake/Traction Control Module (EBCM/EBTCM) by means of an AC voltage. This voltage is generated by magnetic induction caused by passing a toothed sensor ring past a stationary sensor. The signal is transmitted to the EBCM/EBTCM through a pair of wires. The front wheel speed sensor is located in the bearing assembly and is nonadjustable. Sensor gap is set at time of assembly. The rear wheel speed sensors are mounted in the bearing assembly and are non-adjustable. Sensor gap is set at the time of assembly.