For 1990-2009 cars

## Knock Sensor Replacement DOHC

### Removal Procedure

1. Turn the ignition OFF.
2. Disconnect the knock sensor harness connector.
3. Remove the knock sensor connector from the retaining clip by inserting a flat-blade screwdriver between the connector and clip.
4. Slide the knock sensor connector toward the battery to remove from the clip.

Caution: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.

5. Raise the vehicle.
6. Remove the knock sensor attachment bolt and the knock sensor.

### Installation Procedure

Notice: Refer to Fastener Notice in the Preface section.

Important: The larger metal contact area of the knock sensor MUST be toward the engine block. DTC P0327 may result if the sensor is installed backwards.

1. Install the knock sensor and attachment bolt with the larger metal contact area toward the engine block.

Tighten
Tighten the knock sensor to 25 N·m (19 lb ft).

Important: If the new knock sensor connector retaining clip is going to be used, the old one must be removed from the bracket. Use diagonal cutters to remove.

2. Lower the vehicle.
3. Insert the knock sensor retaining clip into the bracket.
4. Connect the knock sensor harness connector. Push in the connector until a click is heard and pull back to confirm a positive engagement.

## Knock Sensor Replacement SOHC

### Removal Procedure

1. Turn the ignition OFF.

Caution: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.

2. Raise the vehicle.
3. Disconnect the knock sensor harness connector.
4. Remove the knock sensor attachment bolt and the knock sensor.

### Installation Procedure

Notice: Refer to Fastener Notice in the Preface section.

Important: The larger metal contact area of the knock sensor MUST be toward the engine block. DTC P0327 may result if the sensor is installed backwards.

1. Install the knock sensor and attachment bolt with the larger metal contact area toward the engine block.

Tighten
Tighten the knock sensor to 25 N·m (19 lb ft).

2. Connect the knock sensor harness connector.