Diagnosing Customer Concerns w/out Hard Fault Codes

If a Lamp Fault Code (LFC) is reported by the customer, but is not present when the vehicle comes in for service, follow the Diagnostic Instructions procedure to identify the intermittent Diagnostic Trouble Code (DTC). Diagnostic Instructions

Once the DTC is known, read Normal Operation information found in Pin Point Tests/Test Notes for each Diagnostic Trouble Code.
^ Follow the deactivation procedure. Arming and Disarming
^ Determine the location of components involved in creating that code.
^ Perform a thorough visual inspection of:
- connectors.
- splices and wiring harnesses.
- pinched wires.
- worn insulation on conductors.
- opens, shorts or loosely mounted sensors.

The "Possible Causes" that relate to that particular code are found in the Test Notes which precede each pinpoint test. Concerns are listed according to priority.