Knock Sensor: Testing and Inspection
Component InspectionKNOCK SENSOR
Use an ohmmeter which can measure more than 10 MOhms.
1. Disconnect knock sensor harness connector.
2. Check resistance between terminal 1 and ground.
Resistance : 500 - 620 kOhms [at 25 °C (77 °F)]
CAUTION: Discard any knock sensors that have been dropped or physically damaged. Use only new ones.