RAM 1500 Truck 2WD V6-3.9L VIN X (1999)
Wheel Speed Sensor: Description and Operation
Rear Wheel Antilock Brakes
Rear Wheel Speed Sensor And Exciter Ring
Rear Wheel Speed Sensor Location
The rear wheel Speed Sensor (WSS) is mounted in the rear differential housing. The WSS consists of a magnet surrounded by windings from a single
strand of wire. The sensor sends a small AC signal to the Controller Antilock Brake (CAB). This signal is generated by magnetic induction. The
magnetic induction is created when a toothed sensor ring (exciter ring or tone wheel) passes the stationary magnetic WSS.
Exciter Ring Location
The exciter ring is press fitted onto the differential carrier next to the final drive ring gear. For replacement procedure of the exciter ring, refer to
Differential Assembly. See: Transmission and Drivetrain/Differential Assembly
