Self-Study Programme 395 Audi A5 networking.pdf

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Service Training
Audi A5 - Networking
Self-Study Programme 395
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Innovations in the electrical system and electronics on the Audi A5
The number of control units in motor vehicles con-
tinues to increase, and the Audi A5 is no exception.
Many functions would not be possible without this
multiplicity of control units. Ongoing advance pro-
fessional training is needed in order to abreast with
the rapid rate of development within this sector.
This self-study programme gives you the opportu-
nity to familiarise yourself with the networking
topology of the control units on the Audi A5. In addi-
tion, you will learn about the installation locations
of the various control units.
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Familiar components such as the data bus diagnos-
tic interface, the alternator, the onboard power sup-
ply control unit and the light switcheshave now
been updated. This self-study programme contains
information about the new aspects of these compo-
nents, as well as service-related information about
the outside lights on the new Audi A5.
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Contents
Overview
Fuses and relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation locations of Infotainment components . . . . . . . . . . . . . . . . . . . . . . . . 6
Installation locations of control units on the powertrain
CAN bus and extended CAN bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Installation locations of control units on the dash panel insert / suspension
CAN bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Installation locations of control units on the convenience CAN bus . . . . . . . . 12
Networking / vehicles with infotainment CAN bus . . . . . . . . . . . . . . . . . . . . . . . . 14
Networking / vehicles with MOST bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
CAN node connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Control units
Data bus diagnostic interface J533 (gateway). . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Battery monitor control unit J367 (battery data module) . . . . . . . . . . . . . . . . . . 23
Alternator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Battery / external starter connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Onboard power supply control unit J519. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Light switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Wiper motor control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Outside lights, front. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Outside lights, rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
The self-study programme teaches the design and function of new vehicle models,
new automotive parts or new technologies.
Reference
Note
The self-study programme is not a repair manual!
All values given are intended as a guideline only and refer to the software version valid at the time of
preparation of the SSP.
For maintenance and repair work, always refer to the current technical literature.
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Overview
Fuses and relays
Relay carrier and fuse panel in
luggage compartment on right
Fuse panel in dash panel on right
and CAN node connectors
Fuse panel and external starter connec-
tion in plenum chamber
Relay carrier and fuse panel in
electronics box
Connector station and
CAN node connector on left A-post
4
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Fuse panel and battery disconnecting
element at battery positive pole
Relay carrier and mounting bracket for onboard
power supply control unit in driver-side footwell
Fuse panel in dash panel on left
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5
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