Sunroof Operation
The sun roof communicates with the upper electronic module (4/70) via serial communication. The sun roof has an internal control module (4/33) which manages this communication.
Data about the sun roof position and data used for diagnostics is sent from the sun roof to the upper electronic module. Data about the position is sent on to other control modules, including the climate control module via the central electronic module (4/56).
The communication between the upper electronic module and the sun roof consists of diagnostic information.