Circuit/System Description
WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
The sunroof electrical system uses a master/slave configuration utilizing a LIN-Bus based system for communication. The body control module (BCM) is designated as the master, while the sunroof and overhead console are configured as the slaves.
The BCM uses the LIN-Bus communication bus to enable or disable sunroof and sunshade operation, communicate vehicle information to the controller, and request sunroof or sunshade movement.