Functional networking: TCB control unit basic version

Fig 1: Telematic Communication Box - Circuit Diagram

Courtesy of BMW OF NORTH AMERICA, INC.

Example F56

Item	Explanation
1	Emergency loudspeaker
2	Telematic Communication Box (TCB) basic version
3	Body Domain Controller
4	Fuse on Body Domain Controller
5	Crash Safety Module (ACSM)
6	Emergency call button and emergency call LED in the roof function center (FZD)
7	Headunit (HU-H, HU-B)
8	CAN terminator
9	Hands-free microphone