Toyota 4Runner 2001-06

Wheel Speed Sensors

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Removal & Installation





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Fig. Detach the speed sensor wiring harness



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Fig. Use a ratchet to loosen and remove the speed sensor retaining bolt . . .



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Fig. . . . then remove the sensor from the hub



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Fig. Once the sensor is removed, you can see the reluctor wheel

  1. Raise and safely support the vehicle.
  2.  
  3. Remove the wheel.
  4.  
  5. Disconnect the speed sensor wiring harness.
  6.  
  7. Remove the bolt and speed sensor from the knuckle.
  8.  

To install:

  1. Install the speed sensor and tighten the bolt to 73 inch lbs. (8.3 Nm).
  2.  
  3. Connect the speed sensor wiring harness.
  4.  
  5. Install the wheel and lower the vehicle.
  6.  

Front


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Fig. Pull the dust boot away from the wheel speed sensor



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Fig. Detach the speed sensor wiring harness



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Fig. Use a ratchet to loosen and remove the speed sensor retaining bolt . . .



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Fig. . . . then remove the sensor from the hub



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Fig. Once the sensor is removed, you can see the reluctor wheel



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Fig. Inspect the condition of the sealing O-ring, and replace if necessary

  1. Unplug the speed sensor harness from the unit.
  2.  
  3. On 4WD vehicles, remove the clamp bolts and clips holding the sensor harness from the frame, upper arm and steering knuckle.
  4.  
  5. On 2WD vehicles, remove the clamp bolts and clips holding the sensor harness to the frame and upper arm.
  6.  

Discard the old clips.

  1. Remove the sensor from the knuckle.
  2.  

To install:

  1. Attach the sensor to the steering knuckle, tighten to 69-71 inch lbs. (7-8 Nm).
  2.  
  3. Attach the harness along the upper arm and frame with new clips. Tighten the mounting bolts to 48-71 inch lbs. (5-8 Nm).
  4.  
  5. Engage the sensor harness to the unit.
  6.  

Rear
  1. Unplug the speed sensor harness from the unit.
  2.  
  3. Remove the clamp bolts and nuts holding the sensor harness from the frame, upper arm, axle housing and fuel tank (if attached).
  4.  

Discard the old clips.

  1. Remove the sensor from the axle.
  2.  

To install:

  1. Attach the sensor to the axle, tighten to 69-71 inch lbs. (7-8 Nm).
  2.  
  3. Attach the harness along the appropriate areas, then tighten the mounting bolts to 48-71 inch lbs. (5-8 Nm). Be sure to used all new clips, and install them in the same angle of the removed ones.
  4.  
  5. Engage the sensor harness to the unit.
  6.  

 
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