3 Series E91 330d (M57T2) TOUR
The system master links the individual control units.
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Power master
The power master initialises the network and switches the buses on and off (wake-up, sleep mode).
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Network master
The network master controls and monitors the MOST bus. Each time the network is started up, the system
configurations are detected and compared with a stored specified configuration. If systems do not work
correctly, these are reset and separated from the MOST bus. Each error or deviation from the specified
configuration is saved in a fault memory for the MOST bus.
Audio system controller
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Audio master
The audio master collects, evaluates and controls all audio signals in the vehicle. The audio master outputs
the signals in order of priority via the loudspeakers. The audio master also produces additional audible
signals for warnings and for Park Distance Control (PDC). By mixing or fading in and out, a "softer" audible
change is obtained between the signal sources.
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Connection master
The connection master distributes the signals of the audio sources and the audible signals to the
loudspeakers. The connections to digital audio sources are made, disconnected and enabled by the
connection master.
The signals are transmitted to the loudspeakers in the following way:
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Front left and right:
Acoustic signals, telephone
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Front and rear: Signals from Park Distance Control (PDC)
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All loudspeakers: All sources in the "Entertainment" menu, traffic reports
Notes for service staff
Service staff should note the following points:
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General note: [more ...]
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Diagnosis: ---
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Encoding/programming: ---
Subject to change.
SBT Radio E87, E90, E91, E92, R56
BMW AG - TIS
18.02.2013 21:26
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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