Knock Sensor: Testing and Inspection

Knock sensor
1. Disconnect knock sensor harness connector.
2. Check resistance between terminal (2) and ground.
Approximately 500 - 620 kohm [at 25 °C (77 °F)]
It is necessary to use an ohmmeter which can measure more than 10 Mohm.

CAUTION: Do not use any knock sensors that have been dropped or physically damaged. Use a new one.