Sunroof Operation
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2014 Volvo XC90, 2013 Volvo XC90, 2012 Volvo XC90, 2011 Volvo XC90, and 2010 Volvo XC90. However, it is still accessible from the selected car via links, so may be relevant.
The sun roof module (SRM) (4/33) communicates with the upper electronic module (UEM) (4/70) using serial communication.
Information about the sun roof position and information to be used for diagnosis is sent from the sun roof module (SRM) to the upper electronic module (UEM). The information about the position is transmitted on to other control modules, such as the climate control module (CCM) (3/112) via the central electronic module (CEM) (4/56).
The communication between the upper electronic module (UEM) and the sun roof module (SRM) mainly consists of diagnostic information.