Wheel Speed Sensor (WSS)/Tone Wheel Assemblies

Four WSS/tone wheel assemblies are used, one on each wheel. WSS constantly delivers an AC voltage signal to Controller Anti-Lock Brake (CAB). The CAB then converts this voltage signal into digital signals for each wheel for controlling ABS and TCS operation (if equipped).

On front wheels, the speed sensor magnet is located on steering knuckle and tone wheel is located on the outer CV joint of the axle shaft. On rear wheels, sensor is mounted on brake caliper adapter plate and tone wheel is located on hub assembly. The air gap of the wheel speed sensor is non-adjustable.