Sunroof / Moonroof: Description and Operation

The sunroof control module determines sunroof motor direction based on inputs it receives from the sunroof switch. The sunroof operates whenever the ignition switch is at RUN or during retained accessory power (it equipped)

Express Open
When the sunroof control module's reverse/close vent input is grounded though the sunroof switch, the module goes into the express open mode.

The sunroof motor runs until one of three conditions occurs: 1) the motor stalls when the sunroof reaches its fully open position, 2) the sunroof switch is pushed to the forward/vent position, or 3) the sunroof switch is released from the reverse/close vent position and then pressed again.

Closing
The sunroof control module runs the motor until the sunroof switch is released or the limit switch closes, grounding the module's limit switch input. The limit switch closes when the sunroof is in the flush closed position.