Sunroof Operation

Fig 1: Identifying Sunroof Operation

Courtesy of VOLVO CARS CORPORATION

The sun roof communicates with the central electronic module (CEM) (4/56) via serial communication. The sun roof has a sun roof module (SRM) (4/33) which manages this communication.

Information about the sun roof position and information to be used for diagnosis is sent from the sun roof to the central electronic module (CEM). The information about the position is transmitted on to other control modules, such as the climate control module (CCM) (3/112) (via central electronic module (CEM)).

The communication between the central electronic module (CEM) and the sun roof mainly consists of diagnostic information.