Commercial Chassis

A Wheel Speed Sensor (WSS) is present at each wheel. The sensors transmit wheel speed information to the Electronic Brake/Traction Control Module (EBTCM) by means of a small AC voltage. This voltage is generated by magnetic induction caused by passing the toothed sensor ring (part of the integral hub/bearing-assembly) past the stationary sensor. The signal is transmitted to the EBTCM through shielded wiring to help reduce electro-magnetic interference that can cause false or noisy WSS inputs to the EBTCM.

Front Wheel Speed Sensor:

The front wheel speed sensor is located in the hub/bearing assembly and is non-adjustable. Sensor gap is set at time of assembly.





The rear wheel speed sensors are mounted in the Knuckle Assemblies and are non-adjustable. Sensor gap is set at the time of assembly.