Ground Circuit Inspection
- Ignition "OFF".
- Disconnect Knock sensor and PCM connectors.
- Measure resistance between terminals 2 of the sensor harness connector and 54 of the PCM harness connector.
Specification: Approx. 0Ω
- Is resistance within the specification?
YES
- Go to "SIGNAL CIRCUIT INSPECTION " procedure.
NO
- Check for an open in the ground circuit. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.