Audi A8 2019 Service Training page 58

Airbag Control Module J234
Data bus interface
J234 communicates via the FlexRay data bus. Due to the
increased volume of data in comparison with the Audi Q7,
J234 now communicates with the FlexRay data bus via two
data lines (channels). These data lines are designated
channel "A" and channel "B".
System overview
For the sake of clarity, additional
system components are only shown
on the Airbag Control Module J234.
Wire colors:
FlexRay
LIN bus
Sub-bus system
54
Data Bus on Board Diagnostic Interface
J533
Driver Assistance Systems Control Module
J1121
Installation location
Channel A
J104
J234
J706
J854
J855
J1097
J1098
J1019
J500
J527
Channel B
J1088
J1089
J769
J770
J428
J1122
J775
J623
J792
J217
J187
662_055
662_056