Self-Study Program

10
Control units
Data bus diagnostic interface J533
Modifications to Audi A6 ‘05
The data bus diagnostic interface of the Audi Q7 now has more powerful hardware and a new processor.
This was necessary due to the increasing number of messages which are required to be routed between the
various bus systems. No functional modifications were made to the diagnostic interface of the Audi A6 ’05.
The diagnostic interface with new hardware is also be introduced in the Audi A8 ’03 and A6 ’05 at a later date.
364_007
364_008
Master functions
● Terminal 15 - powertrain CAN bus run-on
● Sleep and wake-up of the data bus systems
● Optical fibre break diagnostics of the MOST-Bus
● Installation list
Variants
The data bus diagnostic interface is available in two
variants for the Audi Q7. The part numbers differ
from one another only in respect of the index. The
difference between the two variants is the
availability of a CAN Extended connection. This
connection is required if ACC or Lane Change Assist
is installed in the vehicle.
Installation location
The data bus diagnostic interface J533 is located on
the left behind the dash panel insert and is attached
to a mounting bracket.