Diagnostic Trouble Code (DTC) Information ICM-Dc02

Condition 

Fig 1: Identifying Infotainment Control Module (ICM)

Courtesy of VOLVO CARS OF NORTH AMERICA.

The infotainment control module (ICM) checks that the status of the MOST network is MOST-LOCK. MOST-LOCK means that the network is closed and that communication is possible.

The diagnostic trouble code (DTC) is stored if the infotainment control module (ICM) registers that the MOST network is not in MOST-LOCK mode.

The diagnostic trouble code (DTC) can be detected when the ignition is in position I or II for at least 5 seconds.

Substitute Value 

• None.

Possible Source 

• Dirty or damaged terminal for the MOST cable
• Open-circuit in the MOST cable
• The MOST transceiver is damaged in one of the control modules in the MOST network
• No power supply to a control module in the MOST network
• Damaged fuse.
• Damaged control module in the MOST network.

Fault symptom[s] 

• Audio unit not operating.
• The display does not light.
• Functions in the infotainment system do not work.
• No or reduced carphone functionality.