Wheel Speed Sensor: Service and Repair

Rear Wheel Speed Sensor Replacement

Removal Procedure




Warning: Refer to Brake Dust Warning (Brake Dust Warning).

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle (Service and Repair).
2. For the left rear sensor, remove the leaf spring anchor plate. Refer to Leaf Spring Replacement (1500/3500) (Leaf Spring Replacement)Leaf Spring Replacement (4500 Series) (Leaf Spring Replacement).
3. Disconnect the electrical connector.
4. Remove the wheel speed sensor retaining bolt.
5. Remove the wheel speed sensor and spacer block.

Installation Procedure




1. Install the spacer block and the wheel speed sensor.

Caution: Refer to Fastener Caution (Fastener Caution).

2. Install the wheel speed sensor retaining bolt and tighten to 14 Nm (124 lb in).
3. Connect the electrical connector.
4. For the left rear sensor, install the leaf spring anchor plate. Refer to Leaf Spring Replacement (1500/3500) (Leaf Spring Replacement)Leaf Spring Replacement (4500 Series) (Leaf Spring Replacement).
5. Lower the vehicle.
6. Perform a low speed test to ensure the wheel speed sensor is functioning properly:

1. Start the engine and allow it to idle.
2. Check to see if the ABS indicator or the traction assist indicator remains illuminated.
3. If the ABS indicator or the traction assist indicator remains illuminated, DO NOT proceed to drive the vehicle until it is diagnosed and repaired. Check the wheel speed sensor electrical connector to ensure it is not damaged and is installed properly. If the lamp remains illuminated, refer to Diagnostic Starting Point - Vehicle (Diagnostic Starting Point - Vehicle).
4. Select a smooth, dry, clean, and level road or large lot that is as free of traffic and obstacles as possible.
5. Drive the vehicle and maintain a speed of at least 16 km/h (10 mph) for at least 5 seconds.
6. Stop the vehicle and check to see if the ABS indicator or the traction assist indicator is illuminated.
7. If an indicator is illuminated, refer to Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle).