Knock Sensor: Service and Repair

Knock Sensor Replacement

Removal Procedure




1. Disconnect the negative battery cable
2. Remove the knock sensor harness connector.
3. Remove the knock sensor connector from the retaining clip by inserting a flat-bladed screwdriver between the connector and clip while sliding the connector upward.
4. Remove the knock sensor.

Installation Procedure






Important: If a new knock sensor pigtail connector retaining clip is going to be used, the old one must be removed from the intake manifold. Use a push pin removal tool to remove the clip from the intake manifold.

1. Insert the knock sensor pigtail connector with retaining clip into the intake manifold hole or slide the knock sensor pigtail connector over the retaining clip from the top.
2. Connect the knock sensor harness connector. Push in the connector until a click is heard, then pull back to confirm a positive engagement.

Notice: Refer to Fastener Notice.

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

3. Install the knock sensor at the 9 o'clock position and attachment bolt.

Tighten the knock-sensor-engine block bolt to 25 N.m (18 lb ft).

4. Connect the negative battery cable.