Inspection Procedure

INSPECTION PROCEDURE

1. Check continuity between terminals KNK1, KNK2 of Engine Control Module connector and body ground.





- Connect the Check Harness A.
- Disconnect the Engine Control Module connectors.
- Measure resistance between terminals KNK1, KNK2 of Engine Control Module connector and body ground.

Resistance: 1 Mega ohms or higher

- If OK proceed to step 3.
- If not OK proceed to step 2.
2. Check Knock Sensor.





- Disconnect Knock Sensor connector.
- Measure resistance between the Knock Sensor terminal and body.

Resistance: 1 Mega ohms or higher

- If OK proceed to step 3.
- If not OK replace Knock Sensor.
3. Check for open and short in harness and connector between Engine Control Module and Knock Sensor.
- If OK proceed to step 4.
- If not OK repair or replace harness or connector.
4. Does malfunction disappear when a good Knock Sensor is installed?
- If YES replace Knock Sensor.
- If NO check and replace Engine Control Module.