Jeep Wagoneer/Commando/Cherokee 1984-1998

Speed Sensors

Imprimir

TESTING



See Figure 1

  1. Check the wheel speed sensor air gap using a brass feeler gauge. On the rear sensors, if the air gap measures out of specifications, adjust to the correct specifications. On the front sensors, if the air gap measures out of specifications, the sensor is broken or loose.
  2.  
  3. Disengage the speed sensor wiring harness connector. Inspect the condition of the connector and repair if necessary.
  4.  
  5. Using an ohmmeter, measure the resistance between the wheel speed sensor connector terminals.
  6.  
  7. The resistance should measure between 900-1300 ohms. If the resistance measures outside this value, replace the wheel speed sensor.
  8.  

Removal & Installation



Front

See Figures 2 and 3

  1. Raise the vehicle and support it with jackstands.
  2.  
  3. Turn the wheel outward.
  4.  
  5. Disengage the sensor wire and clean the sensor and surrounding area.
  6.  
  7. Unfasten the sensor attaching bolt
  8.  
  9. Remove the grommet retaining the sensor wire in the wheel house panel.
  10.  
  11. Disengage the sensor wire from the harness plug in the engine compartment and remove the sensor.
  12.  

To install:

There is no front sensor air gap adjustment. The air gap should be 0.057-0.051 in. (0.04-1.30mm). If the air gap is incorrect, the sensor is broken or loose.

  1. Install the sensor on the steering knuckle, apply Loctite® to the sensor bolt and tighten the bolt finger-tight only.
  2.  
  3. Tighten the bolt to 11 ft. lbs. (14 Nm) and attach the sensor wire to the steering knuckle with grommets.
  4.  
  5. Route the sensor wire to its original locations.
  6.  
  7. Seat the sensor wire grommet in the body panel and clip the wire to the brake line at the grommet location.
  8.  
  9. Engage the sensor wire to the harness in the engine compartment.
  10.  
  11. Lower the vehicle.
  12.  



Click image to see an enlarged view

Fig. Fig. 1: View of the front wheel sensor wire routing



Click image to see an enlarged view