Audi Entry MIB, Обучение по обслуживанию

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The electronic information systems control unit 1 J794 is con-
nected to the data bus diagnostic interface J533 via the informa-
tion/entertainment CAN on all versions of the MIB. The informa-
tion/entertainment CAN is a high-speed bus with a data transfer
rate of 500 kbit/s.
The MMI display J685 and the control panel E380 are, for the first
time, connected to the electronic information systems control
unit 1 J794 via a private CAN bus. This is also a high-speed bus
with a data rate of 500 kbit/s.
If a vehicle is also fitted with an additional information/entertain-
ment control unit (e.g. the digital sound package control unit
J525), the system is also equipped with a MOST bus. Consequently
it is possible for the first time for an Audi vehicle to be fitted with
both the information/entertainment CAN and the MOST bus.
Due to the combination of the information/entertainment CAN
and the MOST bus, a break on the MOST bus does not result in
complete failure of the MMI. Thus all functions which are carried
out directly on the J794 remain available. However, audio signal
output via an external amplifier would not be possible.
Network systems
Information/entertainment CAN
Sub-bus system (private CAN bus)
MOST bus
CAN bus system to which J285 and
J533 are both connected
Control unit for
multimedia system
E380
MMI display
J685
Digital sound package con-
trol unit
J525
Control unit
in dash panel insert
J285
DVD changer
R161
TV tuner
R78
Reversing camera system
control unit
J772
Electronic information sys-
tems control unit 1
J794
Data bus
diagnostic interface
J533
Note
The topology illustrated shows one possible configuration of the network system for the Modular Infotainment System.