Intermittent Problem Inspection Procedure
Sometimes the most difficult case in troubleshooting is when a problem symptom occurs but does not occur again during testing. An example would be if a problem appears only when the vehicle is cold but has not appeared when warm. In this case, the technician should thoroughly make out a Customer Problem Analysis Sheet and recreate (simulate) the environment and condition which occurred when the vehicle was having the issue.
- Clear Diagnostic Trouble Code (DTC).
- Inspect connector connection, and check terminal for poor connections, loose wires, bent, broken or corroded pins, and then verify that the connectors are always securely fastened.
- Slightly shake the connector and wiring harness vertically and horizontally.
- Repair or replace the component that has a problem.
- Verify that the problem has disappeared with the road test.