Replace the sensor as follows:
- disconnect the battery;
- Raise the rear of the car on supports and remove the wheel;
- remove the rear seat cushions;
- disconnect the multi-pin connector of the sensor under the seat cushion;

Fig. 275. Location of the rear wheel sensor in the drum brake mechanism
- unscrew the bolt from the inside of the brake support plate and remove the sensor from the hole (Fig. 275);
- release the wire from the mount.
Install in the reverse order of removal. Before installing, check the sensor mounting hole for damage, corrosion, or jagged edges. Install the wheel and check the toothed wheel for damage.