How to replace speed sensor on mitsubishi gallant?

Removal & Installation

1. Elevate and safely support the vehicle.
2. Remove the wheel and tire assembly and the disc brake rotor.
3. Remove the inner fender or splash shield.
4. Beginning at the sensor end, carefully disconnect or release each clip and retainer along the sensor wire. Take careful note of the exact position of each clip; they must be reinstalled in the identical position. Rear wheel sensor harnesses will be held by plastic wire ties; these may be cut away but must be replaced at reassembly.
5. Detach the sensor connector at the end of the harness.
6. Remove the two bolts holding the speed sensor bracket to the knuckle and remove the assembly from the vehicle.
   
   NOTE

   The speed sensor has a pole piece projecting from it. This exposed tip must be protected from impact or scratches. Do not allow the pole piece to contact the toothed wheel during removal or installation.
   
   
   
   
   

   

   Fig. Inspect removed speed sensor for damaged pole piece. Also check pole piece for foreign material or metal adhesion

7. Remove the sensor from the bracket.
   
   
   

   

   Fig. Exploded view of the wheel speed sensors and ABS rotor-1999 Eclipse FWD vehicles

   
   
   
   

   

   Fig. Wheel speed sensors and ABS rotor locations-1999 Eclipse AWD vehicles

To install:

1. Assemble the sensor onto the bracket. Note that the brackets are different for the left and right front wheels, as well as both side rear wheels. Each bracket has identifying letters stamped on it.
2. Identify the front speed sensor brackets as follows:
   1. FR: Indicates that the bracket is for the front speed sensor.
   2. R: Indicates that the bracket is for the right wheel.
   3. L: Indicates that the bracket is for the left wheel.

   
   
3. Identify the rear speed sensor brackets as follows:
   1. R: Indicates that the bracket is for the right wheel.
   2. L: Indicates that the bracket is for the left wheel.
      
      
      

      

      Fig. Rear speed sensor bracket identification marking

   
   
4. Temporarily install the speed sensor to the spindle or knuckle; tighten the bolts only finger tight.
   
   NOTE

   During speed sensor installation to the mounting bracket, make sure the letters FR are visible. Be careful when installing the speed sensor on the vehicle, that the pole piece at the tip of the sensor does not strike the toothed edge of the rotor, and damage them.
   
   
5. Route the cable correctly and loosely install the clips and retainers. All clips must be in their original position and the sensor cable must not be twisted. Improper installation may cause cable damage and system failure.
6. Use a brass or other non-magnetic feeler gauge to check the air gap between the tip of the pole piece and the toothed wheel. The correct gap is 0.012-0.035 inch (0.3-0.9mm). Tighten the 2 sensor bracket bolts to 10 ft. lbs. (14 Nm) with the sensor located so that the gap is the same at several points on the toothed wheel. If the gap is incorrect, it is likely that the toothed wheel is worn or improperly installed.
7. Tighten the screws and bolts for the cable retaining clips.
8. Install the disc brake rotor, inner fender or splash shield.
9. Install the wheel and tire assembly. Lower the vehicle to the ground.
10. Inspect the brake system for proper operation.

Front

Fig. Front and rear wheel speed sensors-Mirage

1. Disconnect the negative battery cable.
   
   CAUTION

   Wait at least 90 seconds after the negative battery cable is disconnected to prevent possible deployment of the air bag.
   
   
2. Raise and safely support the vehicle.
3. Remove the splash shield.
4. Detach the speed sensor connector.
5. Remove the clips holding the sensor harness.
6. Remove the speed sensor from the bracket.

To install:

1. Install the speed sensor to the bracket and secure with mounting bolt.
2. Install the clips holding the sensor harness.
3. Attach the speed sensor connector.
4. Connect the negative battery cable.

Fig. Wheel speed sensors-1990-2003 Galant

1. Disconnect the negative battery cable. Wait at least 90 seconds before performing any work.
2. Raise and safely support the vehicle. Remove the necessary tire and wheel assembly.
3. Remove the fender splash shield.
4. Detach the ABS speed sensor connector.
5. Remove the sensor harness clamp bolts and clamps.
6. Remove the ABS speed sensor mounting bolt and the sensor.

To install:

1. Install the ABS speed sensor with its mounting bolt.
   
   NOTE

   The clearance between the wheel speed sensor and the rotor's toothed surface is not adjustable, but measure the distance between the sensor installation surface and the rotor's toothed surface. Standard value is: 1.11-1.12 in. (28.2-28.4mm). If not within specifications, replace the speed sensor or the toothed rotor.
   
   
2. Reinstall the sensor harness with its clamps and bolts.
3. Reconnect the speed sensor connector.
4. Install the fender splash shield.
5. Reinstall the tire and wheel, safely lower the vehicle, and reconnect the negative battery cable.

Fig. Wheel speed sensors-Diamante

1. Disconnect the negative battery cable.
   
   CAUTION

   Work must be started after 90 seconds from the time the ignition switch is turned to the LOCK position and the negative battery cable is disconnected.
   
   
2. Raise and safely support the vehicle.
3. Remove the splash shield.
4. Detach the speed sensor connector.
5. Remove the clips holding the sensor harness.
6. Remove the speed sensor.

To install:

1. Install the speed sensor and torque to 9 ft. lbs. (12 Nm).
2. Install the clips holding the sensor harness.
3. Connect the speed sensor connector.
4. Connect the negative battery cable.

Rear

Fig. Adjusting the rear speed sensor air gap-Mirage

1. Disconnect the negative battery cable.
   
   CAUTION

   Wait at least 90 seconds after the negative battery cable is disconnected to prevent possible deployment of the air bag.
   
   
2. Raise and safely support the vehicle.
3. Detach the speed sensor connector.
4. Remove the clips holding the sensor harness.
5. Remove the mounting bolt and the speed sensor.

To install:

1. Install the speed sensor and loosely tighten the mounting bolt.
2. Install the clips holding the sensor harness.
3. Install the sensor wire harness and attach the connector.
4. Using a non-magnetic feeler gauge, adjust the sensor air gap so the clearance between the rotor and the sensor is 0.012-0.035 inches (0.3-0.9mm).
5. Tighten the sensor bracket and recheck the clearance.
6. Connect the negative battery cable.

1. Disconnect the negative battery cable. Wait at least 90 seconds before performing any work.
2. Raise and safely support the vehicle. Remove the necessary tire and wheel assembly.
3. Detach the ABS speed sensor connector.
4. Remove the sensor harness clamp bolts and clamps.
5. Remove the ABS speed sensor mounting bolt and the sensor.

To install:

1. Install the ABS speed sensor with its mounting bolt.
   
   NOTE

   The clearance between the wheel speed sensor and the rotor's toothed surface is not adjustable, but measure the distance between the sensor installation surface and the rotor's toothed surface. Standard value is: 1.11-1.12 in. (28.2-28.4mm). If not within specifications, replace the speed sensor or the toothed rotor.
   
   
2. Reinstall the sensor harness with its clamps and bolts.
3. Reconnect the speed sensor connector.
4. Reinstall the tire and wheel, safely lower the vehicle, and reconnect the negative battery cable.

1. Disconnect the negative battery cable.
   
   CAUTION

   Work must be started after 90 seconds from the time the ignition switch is turned to the LOCK position and the negative battery cable is disconnected.
   
   
2. Raise and safely support the vehicle.
3. Detach the speed sensor connector.
4. Remove the clips holding the sensor harness.
5. On AWD models, remove the cable band.
6. Remove the mounting bolt and the speed sensor with the O-ring.

To install:

1. Install the speed sensor with the O-ring and torque to 9 ft. lbs. (12 Nm).
2. Install the clips holding the sensor harness.
3. Install the cable band.
4. Install the sensor wire harness and connect the connector.
5. Connect the negative battery cable.

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