Sunroof

DIAGNOSIS AND TESTING - SUNROOF

Refer to the SUNROOF DIAGNOSIS TABLE for possible causes. Before beginning sunroof diagnostics verify that all other power accessories are in proper operating condition. If not, a common electrical problem may exist.

If the glass panel does not fully move to the desired position the sunroof module may need to be initialized. To initialize the motor, connect power to the sunroof and press the vent-button until the glass panel has reached the full-vent position. Once in full vent hold the vent button for 15 seconds. The mechanism will make a click. This is the indication that the sunroof module is initialized

SUNROOF DIAGNOSIS TABLE






WATER DRAINAGE AND WIND NOISE DIAGNOSIS

Before beginning diagnosis for wind noise or water leaks, verify that the problem was not caused by releasing the control switch before the sunroof was fully closed. The sunroof module has a water-management system. If however, the sunroof glass is in a partial closed position, high pressure water may be forced beyond the water management system boundaries and onto the headlining.

The sliding glass panel is designed to seal the opening with a snug but not perfectly water tight fit between the roof and the seal. The fit can be checked by inserting a business card or equivalent, between the roof and the seal. The piece of paper should have some resistance when pulled around the opening with the glass panel in the closed position. This check can only be complete when both the glass seal and the roof are dry. The sunroof housing will drain off a minimum amount of water. Excessive wind noise could result if the gap clearances are exceeded. The sunroof glass panel may need to be adjusted Adjustments.

Adequate drainage is provided by a drain trough in the sunroof housing which encircles the sliding glass panel and leads to drain hoses. If a wet headliner or other water leak complaints are encountered, before performing any adjustments, first ensure that the drainage system is not plugged or disconnected. Use a pint container to pour water into the sunroof housing drain trough. If water flow is restricted, use compressed air to blow out any material plugging the drain system. Retest system again.

To further check for a disconnected drain hose:

NOTE:
Care must be taken not to fold or kink the headliner upon removal.

1. Lower headliner as necessary to gain access to sunroof housing drain tubes Headliner - Removal.

2. Repair as necessary.