Power Sunshade Inoperative (Front)

Power Sunshade Inoperative (Front)

Diagnostic Aids

If the front glass and/or front sunshade are experiencing an intermittent inoperative condition, check the sunroof switch ground circuit for an open condition. If the sunroof switch ground circuit is open, the switch may take a redundant path to ground through the illumination circuit. When the lights are turned ON, the redundant path is removed, and the sunroof and/or sunshade will become inoperative.

If both the front glass and the front sunshade are inoperative, the fault most likely is in the RAP relay switch supply voltage circuit, battery positive voltage circuit or front glass control module ground circuit. If the front glass control module is not being powered, neither will the front sunshade control module

If voltage is not measured on the front sunshade switch open signal or front sunshade switch close signal circuits, the fault could be in the RAP relay switch supply voltage circuit, battery positive voltage circuit, or front glass control module ground circuit. If the front glass control module is not being powered, neither will the front sunshade switch signal circuits.

If the sunshade switch open signal circuit or sunshade switch close signal circuit is found to be short to voltage, the sunroof switch will most likely be open.

Test Description

Step 1 - Step 10:

Step 11 - Step 19:

Step 20 - Step 31:

The numbers below refer to the step numbers in the diagnostic table.
4. This step is used to determine the correct diagnostic path. The path depends on if the front sunshade is inoperative and in the open position, or if the front sunshade is inoperative and in the closed position.
9. This step tests the front sunshade switch open switch.
12. This step tests the front sunshade switch close switch.