Roof Supervised Open/Close Operation
WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
Supervised operation of the power sunroof system allows for the roof to be moved to a desired position. When you press and hold the desired roof or vent open switch to the first detente of the switch, the roof/vent open switch signal circuit is pulled low through the switch contacts signaling the sunroof module of the roof/vent open request. The module then commands the motor to move the roof glass towards the open position until the switch is released. Closing the roof glass works similar to opening the roof, except that the roof/vent close switch signal circuit is pulled low signaling the module of the roof close request.