CIC: Car Information Computer

The Car Information Computer (CIC) has 8 free programmable favorite buttons.

Fig 1: Identifying Headunit Components

Courtesy of BMW OF NORTH AMERICA, INC.

In principle, the structure of the CIC corresponds to that of a personal computer (PC). In a similar way to a PC, the CIC contains the following components:

• Processor
• Working memory
• Hard disk
• Fan

The extended range of functions means that the plug connections on the back of the Car Information Computer (CIC) have also changed.

Fig 2: Identifying LVDS Interface Components

Courtesy of BMW OF NORTH AMERICA, INC.

The following other components are integrated in the Car Information Computer (CIC):

• Navigation computer, HIP module as well as yaw sensor

  The HIP module receives data from the GPS aerial such as: date, time display and locations of the GPS satellites. The navigation system uses the data from the HIP module to calculate the vehicle position.

  The yaw sensor delivers the data regarding a change in driving direction. This data is required for a more accurate location determination, as satellite signals cannot be received everywhere (e.g. tunnels, underground vehicle parks).

• Three-way tuner: FM, AM and TMC
• DAB tuner
• Audio system controller
• Gateway between MOST and CAN

The operating unit for M-ASK-AUD with the 'favorites' buttons is not connected directly to the CIC. The operating facility is integrated in the control panel for the IHKA. The electrical connection is by means of a ribbon cable leading to the IHKA control unit. The IHKA sends the signals in messages on the K-CAN.

Fig 3: M-ASK-AUD Control Panel Communication Diagram

Courtesy of BMW OF NORTH AMERICA, INC.