Control Module
The infotainment control module (ICM) acts as a gateway between the CAN and MOST networks. It also acts as the master control module in the MOST network and checks the other control modules.
The infotainment control module (ICM) consists of a display / printed circuit board. There is also a remote control for the infotainment control module (ICM).
The infotainment control module (ICM) controls functions run on the MOST network via its user interface. The command is transmitted from the infotainment control module (ICM) to the other control modules in the network. These implement the requested functions, for example sound playback, changing sound sources and radio settings.
The infotainment control module (ICM) also controls the Security function on MOST.
The infotainment control module (ICM) is in the center console. The control module is removed from the center console for replacement.
The infotainment control module (ICM) communicates with other control modules via:
- CAN communication
- LIN communication and
- MOST communication.
MOST communication is via a fiber optic communication link.
The control module checks activations and input and output signals via an integrated diagnostic system. A diagnostic trouble code (DTC) is stored if the infotainment control module (ICM) detects a fault.
Any diagnostic trouble codes (DTCs) are stored in the control module memory. This information can be read off using the diagnostic tool via the data link connector (DLC) in the vehicle.
A simple way to ensure that the infotainment control module (ICM) is powered and grounded is to check that the display is lit when the ignition key is in positions I or II.
For further information, see SIGNALS .