1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Disconnect the rear wheel speed sensor electrical connector.



3. Remove the retaining bolts and the rear wheel speed sensor (1) from the vehicle.
4. Inspect for the following on the sensor face:

•	Inspect for an accumulation of metallic particles, dirt, grease, or other contaminants.

•	Clean the sensor as required.

5. Inspect the sensor face for evidence of damage. Inspect the sensor for contact with the toothed sensor ring. The sensor should not contact the toothed sensor ring. Determine and correct the cause of the damage when damage is evident.
6. Replace the sensor if damage interferes with proper operation.
7. Inspect the axle bearing for excessive wear.

Notice: The wheel speed sensor is a tight fit and is to be pushed in by hand. DO NOT force the sensor into position, as damage to the sensor could result.

Notice: Wheel speed sensors must be given an anti corrosion coating before installation to prevent corrosion. Use silicone grease P/N 12345579 or equivalent.

1. Install the rear wheel speed sensor assembly (1) into the axle housing (2).

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

2. Install the wheel speed sensor retaining bolt.

Tighten
Tighten the bolt to 7.8 N·m (69 lb in).

3. Perform Diagnostic System Check - ABS .