Rear Wheel Speed Sensor (ABS)

A four-wheel antilock braking system is optional equipment on this vehicle. The rear wheel speed sensor is mounted on the rear differential carrier. The rear wheel speed sensor consists of a magnetic core, with a magnet and a coil. The speed sensor exciter ring is mounted on the differential case behind the ring gear and rotates with the case. An electrical impulse is produced each time a gear tooth of the speed sensor exciter ring passes the rear wheel speed sensor, allowing the sensor to receive a signal in direct proportion to the rear axle speed. This signal is then sent to the Electronic Brake Control Module (EBCM). For more information and diagnostic procedures, refer to Antilock Brake System.