System Overview

System overview

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) has an integrated display. The Infotainment Control Module (ICM) also has two remote controls and an infotainment keypad.
One of the remote controls is used for the navigation system (option).
The other remote control is used for activating most functions that can be controlled via the infotainment keypad, the Climate control module (CCM) and via the buttons on the steering wheel.
The infotainment keypad is on the centre console and has 5 buttons and an infrared (IR) sensor.
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 Infotainment Theft Protection (ITP) function.
For information about the functions controlled by the infotainment control module (ICM) but implemented by other control modules in the MOST network, see Design and Function for each control module and for the MOST network.
The infotainment control module (ICM) is in the dashboard. The control module is removed from the dashboard for replacement.

The infotainment control module (ICM) communicates with other control modules via:
- CAN communication
- LIN-communication
- 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 check that the infotainment control module (ICM) is supplied with power and is grounded is to check that the display lights up with the ignition on.
For further information, also see Signal specifications.

Signals
The table below summarizes the input signals to and output signals from the Infotainment Control Module (ICM). The signal types are divided into directly connected infrared (IR) signals, MOST communication, LIN communication and CAN communication. The illustration below displays the same information with the Volvo component designations.