Most Bus: Headunit

The headunit is the interface between the data buses MOST and K-CAN. For the rest of troubleshooting (read fault memory, etc.), the associated control units must be selected at the BMW diagnosis system. One of the following head units is fitted in the vehicle.

• Radio 2, (RAD2, RAD2 gateway) 
• Central Headunit and Multimedia Platform, (CHAMP-BO, CHAMP-GW) 
• Multi Audio System controller, (M-ASK-BO, M-ASK-GW, M-ASK-NAV) 
• Car Communication Computer, (CCC-ANT, CCC-ASK, CCC-A, CCC-BO, CCC-GW) 
• Car Information Computer, (CIC, CIC-GW) 

Distinction between the head units 

Unlike CIC, M-ASK and CHAMP the CCC has two slots at the front. This external characteristic can be used to distinguish the CCC and M-ASK.