Troubleshooting Hints

Procedure
Note: Perform before beginning System Diagnosis

1. Before doing Electrical Diagnosis, check the mechanical linkages attached to the Headlamp Doors for binding, breakage, etc.
2. Check for corrosion at the Headlamp Door Motor connector terminals.
3. If Headlamp Doors open slowly, check that G106 is clean and tight and also that the battery is good and fully charged.
4. If Headlamp Doors open only partially and no problems were found with mechanical linkages on Headlamp Doors, perform Chart #1. Chart 1 Both Headlamp Door Remain Open or Closed
5. If Headlamp Doors pop up without requesting Headlights, check for bulletins to determine if a correction is necessary.

^ Check for a broken (or partially broken) wire inside of the insulation which could cause system failure but prove "GOOD" in a continuity/voltage check. Use Test Light J 34142 whenever possible. Test lights require more current than a high impedance DVM and are more useful for detecting abnormally high resistive circuits. Some test tights have high impedances and will not be as useful in detecting resistive circuits.
^ Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems.