Some of the components that were modular in the Car Communication Computer
are now integrated into the
CIC as solid state components.
In the event of defects to some of the components, it may be necessary to
replace the entire head unit after
submitting a PuMA case.
Fig. 17: Bottom Open View Of
The Telematics Control Unit (TCU) and the interface box 'High' (ULF-SBX-H)
control units are connected to
the MOST bus. TCU and interface box 'High' may both be fitted in the vehicle for
certain equipment options. In
this case, the telephone function is always implemented in the TCU.
The head uni