Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

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Wheel Speed Sensor: Service and Repair

WSS Harness Routing:





Remove or Disconnect
1. Tire and wheel.
2. Brake Caliper. Refer to Disc Brake System, Brake Caliper. Replacement
3. Rotor.
4. Sensor wire mounting clip on the control arm.
5. Sensor wire mounting clip on the frame.
6. Sensor electrical connector.

- Clean The entire area thoroughly.

NOTE: The speed sensor mounts into a bore that leads to the center of the sealed bearing. Use caution when cleaning and working around the bore. Do not contaminate the lubricant inside the sealed bearing. Failure to do so can lead to premature bearing failure.

7. Sensor from hub and bearing assembly.

NOTE: Carefully remove the sensor by pulling it straight out of the bore! DO NOT use a screwdriver, or other device, to pry the sensor out of the bore. Prying will cause the sensor body to break off In the bore.

Install or Connect

NOTE: The new speed sensor will have a new O-ring. Dispose of the old O-ring. Lubricate the new O-ring lightly with bearing grease prior to installation. You may also lubricate the sensor just above and below the O-ring. DO NOT lubricate the bore.

1. Sensor into hub and bearing assembly.
- Tighten Sensor mounting bolt to 18 Nm (13 ft. lbs.)

NOTE: The new speed sensor has new mounting clips already installed on the wire. DO NOT reuse the old clips.

2. Sensor electrical connector.
3. Sensor wire mounting clip to the frame rail.
4. Sensor wire mounting clip to the control arm.
5. Rotor.
6. Brake Caliper. Refer to Disc Brake System, Brake Caliper.
7. Tire and wheel.