Component Inspection

Check Knock sensor
1. Substitute with a known - good Knock sensor and check for proper operation.
2. Is the signal normal?
  YES
  1. Replace Knock sensor and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  1. Substitute with a known - good ECM and check for proper operation.
    If the problem is corrected, replace ECM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.