Power Sunroof Inoperative

Power Sunroof Inoperative

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 voltage is not measured on the sunroof switch open signal or sunroof 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 sunroof switch signal circuits.

If the sunroof switch open signal circuit or sunroof 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 23:

Step 24:

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