Volvo Cars 1999-05

Wheel Speed Sensors

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Removal & Installation



Rear
  1. Disconnect the negative battery cable.
  2.  
  3. Raise and support the vehicle safely.
  4.  
  5. Remove the tire and wheel assembly.
  6.  
  7. Remove the wheel speed sensor mounting bolt.
  8.  
  9. Pull the sensor out, being careful to turn it as little as possible. Do not pull on the sensor harness.
  10.  
  11. Disconnect the wheel speed sensor electrical connector.
  12.  
  13. Remove the harness from its mount.
  14.  

To install:

  1. Inspect the sensor O-ring, replace as required.
  2.  
  3. Before installing the sensor, be certain there are no foreign materials, like iron fragments adhering to:

    The pick-up part of the sensor
     
    The inside of the sensor mounting hole
     
    The rotor mounting surface.
     

  4.  
  5. Apply a thin coat of a suitable grease to the wheel sensor O-ring and mounting hole.
  6.  
  7. Tighten the sensor mounting bolt to 88 inch lbs. (10 Nm).
  8.  
  9. Continue the installation in the reverse order of the removal procedure.
  10.  

Front
  1. Disconnect the negative battery cable.
  2.  
  3. Raise and support the vehicle safely.
  4.  
  5. Remove the tire and wheel assembly.
  6.  
  7. Remove the wheel speed sensor mounting bolt.
    NOTE
    Remove the rotor to gain access to the wheel sensor mounting bolt.

  8.  
  9. Pull the sensor out, being careful to turn it as little as possible. Do not pull on the sensor harness.
  10.  
  11. Disconnect the wheel speed sensor electrical connector.
  12.  
  13. Remove the harness from its mount.
  14.  

To install:

  1. Inspect the sensor O-ring, replace as required.
  2.  
  3. Before installing the sensor, be certain there are no foreign materials, like iron fragments adhering to:

    The pick-up part of the sensor
     
    The inside of the sensor mounting hole
     
    The rotor mounting surface.
     

  4.  
  5. Apply a thin coat of a suitable grease to the wheel sensor O-ring and mounting hole.
  6.  
  7. Tighten the sensor mounting bolt to 88 inch lbs. (10 Nm).
  8.  
  9. Continue the installation in the reverse order of the removal procedure.
  10.  

 
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