Without Hard DTCs/Lamp Fault Codes

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

Once the DTC is known, read the Normal Operation section for the code involved.
^ Follow the deactivation procedure.
^ Determine the location of components involved in creating that code.
^ Carry out a thorough visual inspection of:
- components
- connectors
- splices and wiring harnesses
- pinched wires
- worn insulation on conductors
- opens, shorts or loosely mounted Restraints Control Module (RCM)
- opens, shorts or loosely mounted sensors

Refer to Possible Causes, which lists the common concerns that relate to a particular code. Concerns are listed according to priority.