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Audi A6 Current Flow Diagram No. 73 / 1
Edition 08.2008
Communication
● MMI
● Multimedia system operating unit
● Digital radio, radio (K-box)
● Navigation system
● Telephone, preparation for mobile telephone
● TV tuner
● Media player
from model year 2007
Notes:
For information concerning
t Position of relays and fuses
t Multi-pin connections
t Control units and relays
t Earth connections
→ List of Fitting Locations!
For information concerning
t Fault Finding Programs
→ guided fault finding
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Audi A6 Current Flow Diagram No. 73 / 2
Data bus diagnostic interface, fuses
A - Battery
J329 - Terminal 15 voltage supply relay
J533 - Data bus diagnostic interface
S132 - Fuse 2
S133 - Fuse 3
SB15 - Fuse 15 on fuse holder B
SB38 - Fuse 38 on fuse holder B
SC8 - Fuse 8 on fuse holder C
T16 - 16-pin connector, diagnostic connector
T26a - 26-pin connector, black, on data bus diagnostic interface
33
- Earth point, on right behind dash panel
370
- Earth connection 5, in main wiring harness
- Positive connection (30), in main wiring harness
1
B272
B273
- Positive connection (15), in main wiring harness
B298
- Positive connection 2 (30), in main wiring harness
B319
- Positive connection 5 (30a), in main wiring harness
ws = white
sw = black
B492
- Positive connection 3 (15), in interior wiring harness
ro = red
rt = red • - CAN bus (data wire)
br = brown * - main fuse box, in luggage compartment, rear right, on the
gn = green
bl = blue battery
gr = grey ** - 9-point relay carrier, behind driver storage compartment
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
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Audi A6 Current Flow Diagram No. 73 / 3
Data bus diagnostic interface
J285 - Control unit in dash panel insert
J428 - Adaptive cruise control unit
J525 - Digital sound package control unit
J533 - Data bus diagnostic interface
T17e - 17-pin connector, red, coupling station on left of A-pillar
T26a - 26-pin connector, black, on data bus diagnostic interface
T32 - 32-pin connector, grey, on dash panel insert
T32f - 32-pin connector, black, connector A, on digital sound
package control unit
T46b - 46-pin connector, CAN separating connector right
B444
- Connection 1 (diagnosis), in main wiring harness (ring
brake diagnosis)
B445
- Connection 2 (diagnosis), in main wiring harness (ring
brake diagnosis)
C67
- Connection (CAN bus, high), in headlight wiring harness
C68
- Connection (CAN bus, low), in headlight wiring harness
ws = white
• - CAN bus (data wire)
sw = black * - models with distance control
ro = red ** - phased-in modification
rt = red
br = brown # - Wake Up wire (exciter wire)
gn = green ♦ - Fibre optic conductor, ⇒ Current Flow Diagram
bl = blue infotainment data bus (Most Ring)
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
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Audi A6 Current Flow Diagram No. 73 / 4
Front information display and operating unit control unit,
multimedia system operating unit, glove compartment button,
display unit button
E316 - Glove compartment button
E380 - Multimedia system operating unit
E506 - Display unit button
J520 - Onboard supply control unit 2
J523 - Front information display and operating unit control unit
T18c - 18-pin connector, black, preparation for mobile telephone
T20g - 20-pin connector, black, connector A, on front information
display and operating unit control unit
T40 - 40-pin connector, black, on onboard supply control unit 2
33
- Earth point, on right behind dash panel
370
- Earth connection 5, in main wiring harness
374
- Earth connection 9, in main wiring harness
B445
- Connection 2 (diagnosis), in main wiring harness (ring
brake diagnosis)
* - models with preparation for mobile telephone (9ZD)
ws = white
sw = black
ro = red
rt = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
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Audi A6 Current Flow Diagram No. 73 / 5
Front information display and operating unit control unit,
display unit for front information display and operating unit
control unit
J523 - Front information display and operating unit control unit
J685 - Display unit for front information display and operating unit
control unit
T22 - 22-pin connector, connector C, on front information
display and operating unit control unit
♦ - Fibre optic conductor, ⇒ Current Flow Diagram
infotainment data bus (Most Ring)
ws = white
sw = black
ro = red
rt = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
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Audi A6 Current Flow Diagram No. 73 / 6
Front information display and operating unit control unit,
display unit for front information display and operating unit
control unit
J523 - Front information display and operating unit control unit
J685 - Display unit for front information display and operating unit
control unit
T22 - 22-pin connector, connector C, on front information
display and operating unit control unit
* - screening on connector housing
ws = white
sw = black
ro = red
rt = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
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Audi A6 Current Flow Diagram No. 73 / 7
Media player in position 1, fuses
R41 - CD changer
R118 - Media player in position 1
SB16 - Fuse 16 on fuse holder B
SC6 - Fuse 6 on fuse holder C
SC10 - Fuse 10 on fuse holder C
SC12 - Fuse 12 on fuse holder C
T8m - 8-pin connector, black, on media player in position 1
B299
- Positive connection 3 (30), in main wiring harness
• - CAN bus (data wire)
* - models with microphone
** - models with preparation for mobile telephone
*** - models with CD changer
# - phased-in modification
♦ - Fibre optic conductor, ⇒ Current Flow Diagram
infotainment data bus (Most Ring)
ws = white
sw = black
ro = red
rt = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
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Audi A6 Current Flow Diagram No. 73 / 8
Telephone transmitter and receiver unit, media player in
position 2
R36 - Telephone transmitter and receiver unit
R41 - CD changer
R119 - Media player in position 2
R153 - MiniDisc player
R199 - Connection for external audio source
T8n - 8-pin connector, black, on media player in position 2
T42 - 42-pin connector, on telephone transmitter and receiver
unit
33
- Earth point, on right behind dash panel
77
- Earth point, lower part of left B-pillar
370
- Earth connection 5, in main wiring harness
382
- Earth connection 17, in main wiring harness
B322
- Positive connection 8 (30a), in main wiring harness
* - models with MiniDisc player
** - models with CD changer
*** - phased-in modification
ws = white
sw = black # - models with microphone
ro = red ## - up to October 2006
rt = red
br = brown ### - from November 2006
gn = green ♦ - Fibre optic conductor, ⇒ Current Flow Diagram
bl = blue infotainment data bus (Most Ring)
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
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Audi A6 Current Flow Diagram No. 73 / 9
Telephone transmitter and receiver unit, aerial for Bluetooth,
telephone handset, radio, telephone and navigation system
aerial
J285 - Control unit in dash panel insert
R36 - Telephone transmitter and receiver unit
R37 - Telephone handset
R52 - Radio, telephone and navigation system aerial
R126 - Telephone bracket
R152 - Aerial for Bluetooth
R164 - Microphone unit in front roof module
T6ao - 6-pin connector, blue, microphone connection roof module
T12g - 12-pin connector, on telephone handset
T32 - 32-pin connector, grey, on dash panel insert
T42 - 42-pin connector, on telephone transmitter and receiver
unit
659
- Earth point 1, on right near rear window
B340
- Connection 1 (58s), in main wiring harness
B341
- Connection 2 (58s), in main wiring harness
B342
- Connection 3 (58s), in main wiring harness
ws = white
sw = black * - roof aerial
ro = red
rt = red # - models with microphone
br = brown ♦ - Fibre optic conductor, ⇒ Current Flow Diagram
gn = green infotainment data bus (Most Ring)
bl = blue
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
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Telephone transmitter and receiver unit, aerial for Bluetooth
R36 - Telephone transmitter and receiver unit
R152 - Aerial for Bluetooth
R164 - Microphone unit in front roof module
T6ao - 6-pin connector, blue, microphone connection roof module
T54 - 54-pin connector, black, on telephone transmitter and
receiver unit
77
- Earth point, lower part of left B-pillar
* - models with preparation for mobile telephone
♦ - Fibre optic conductor, ⇒ Current Flow Diagram
infotainment data bus (Most Ring)
ws = white
sw = black
ro = red
rt = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
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Audi A6 Current Flow Diagram No. 73 / 11
Telephone transmitter and receiver unit, mobile telephone
R1 - Aerial connection
R36 - Telephone transmitter and receiver unit
R54 - Mobile telephone
R126 - Telephone bracket
T12f - 12-pin connector, on mobile telephone
T54 - 54-pin connector, black, on telephone transmitter and
receiver unit
* - models with preparation for mobile telephone
ws = white
sw = black
ro = red
rt = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
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Audi A6 Current Flow Diagram No. 73 / 12
Aerial amplifier for mobile telephone, radio, telephone and
navigation system aerial, fuses
J525 - Digital sound package control unit
R52 - Radio, telephone and navigation system aerial
R86 - Aerial amplifier for mobile telephone
SF1 - Fuse 1 on fuse holder F
SF2 - Fuse 2 on fuse holder F
SF6 - Fuse 6 on fuse holder F
SF8 - Fuse 8 on fuse holder F
SF9 - Fuse 9 on fuse holder F
T3r - 3-pin connector, black, on aerial amplifier for mobile
telephone
T17p - 17-pin connector, black, in left luggage compartment
T32f - 32-pin connector, black, connector A, on digital sound
package control unit
51
- Earth point, on right in luggage compartment
368
- Earth connection 3, in main wiring harness
659
- Earth point 1, on right near rear window
ws = white
sw = black B300
- Positive connection 4 (30), in main wiring harness
ro = red
rt = red * - models with preparation for mobile telephone
br = brown ** - roof aerial
gn = green
bl = blue
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
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Audi A6 Current Flow Diagram No. 73 / 13
Radio, language input control unit
J507 - Language input control unit
R - Radio
T8p - 8-pin connector, black, on radio (K-box)
T12h - 12-pin connector, on radio (K-box)
T17p - 17-pin connector, black, in left luggage compartment
50
- Earth point, on left in luggage compartment
383
- Earth connection 18, in main wiring harness
657
- Earth point 1, on left near rear window
* - with voice control
# - saloon models
## - Avant
♦ - Fibre optic conductor, ⇒ Current Flow Diagram
infotainment data bus (Most Ring)
ws = white
sw = black
ro = red
rt = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
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Audi A6 Current Flow Diagram No. 73 / 14
TV tuner, aerial amplifier
R24 - Aerial amplifier
R78 - TV tuner
T17p - 17-pin connector, black, in left luggage compartment
T20n - 20-pin connector, red, connector B, on TV tuner
Z24 - Heated rear window with window aerial
320
- Earth connection (screening 1, TV), in communication
wiring harness
383
- Earth connection 18, in main wiring harness
657
- Earth point 1, on left near rear window
# - on rear window upper left
♦ - Fibre optic conductor, ⇒ Current Flow Diagram
infotainment data bus (Most Ring)
ws = white
sw = black
ro = red
rt = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
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Audi A6 Current Flow Diagram No. 73 / 15
Digital radio, aerial amplifier 2
E415 - Entry and start authorisation switch
R47 - Central locking and anti-theft alarm system aerial
R78 - TV tuner
R111 - Aerial amplifier 2
R147 - Digital radio
R183 - Digital radio aerial
T8l - 8-pin connector, black, on digital radio
T17p - 17-pin connector, black, left luggage compartment
Z24 - Heated rear window with window aerial
50
- Earth point, on left in luggage compartment
77
- Earth point, lower part of left B-pillar
377
- Earth connection 12, in main wiring harness
379
- Earth connection 14, in main wiring harness
657
- Earth point 1, on left near rear window
659
- Earth point 1, on right near rear window
* - on rear window upper right
ws = white ** - Radio Basic, Basic plus
sw = black # - saloon models
ro = red
rt = red
## - Avant
br = brown ♦ - Fibre optic conductor, ⇒ Current Flow Diagram
gn = green infotainment data bus (Most Ring)
bl = blue
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
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Audi A6 Current Flow Diagram No. 73 / 16
Navigation system with CD drive control unit, telephone and
navigation system aerial, navigation system aerial
J401 - Navigation system with CD drive control unit
R36 - Telephone transmitter and receiver unit
R50 - Navigation system aerial
R52 - Radio, telephone and navigation system aerial
R86 - Aerial amplifier for mobile telephone
T8o - 8-pin connector, black, on navigation system with CD
drive control unit
T17p - 17-pin connector, black, in left luggage compartment
384
- Earth connection 19, in main wiring harness
657
- Earth point 1, on left near rear window
* - models with microphone
** - models with preparation for mobile telephone
*** - models without microphone
# - under roof trim
## - roof aerial
♦ - Fibre optic conductor, ⇒ Current Flow Diagram
infotainment data bus (Most Ring)
ws = white
sw = black
ro = red
rt = red
br = brown
gn = green
bl = blue
gr = grey
li = purple
vi = purple
ge = yellow
or = orange
rs = pink
