Multimedia Module (Mmm) (2006-2007): Function: Navigation
The navigation function displays the location of the car and directions to the entered destination.
The navigation buttons on the steering wheel module (SWM) (3/254) are used to control the on-screen menu for navigation.
The multimedia module (MMM) (16/108) receives GPS signals on the MOST-network from the global positioning system module (GPS) (16/139).
Two signals are transmitted to the central electronic module (CEM) (4/56) on the high speed section of the control area network (CAN):
- information about the wheel rotation counter is transmitted from the brake control module (BCM) (4/16)
- information about the back-up gear position is transmitted from the transmission control module (TCM) (4/28).
The central electronic module (CEM) transmits both signals to the infotainment control module (ICM) (16/94) via the low speed side of the Controller area network (CAN). The vehicle speed signal is transmitted from the central electronic module (CEM) to the infotainment control module (ICM). The infotainment control module (ICM) transmits in turn the signals to the multimedia module (MMM) on the MOST network.
Information for voice guiding for the selected destination is transmitted on the MOST network between the multimedia module (MMM) and the audio module (AUD) (16/105).
A DVD with the required road network must be inserted in the DVD player in order for the multimedia module (MMM) to select a route and display the position of the car. The control module is then able to calculate the position and display it on the directly connected screen (16/46).