Electronic help system for service

Audi A6 Current Flow Diagram No. 9 / 1

Edition 08.2007

Anti-lock brake system (ABS) with traction control system (TCS) and electronic
stabilisation program (ESP)
from model year 2005
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

Audi A6 Current Flow Diagram No. 9 / 2
ABS control unit, ABS
control unit fuse 1
G476 - Clutch position
sender
J104 - ABS control unit
J329 - Terminal 15 voltage
S132 supply relay
J 329 1 # B272 150A
2/87 2A
S123 - ABS control unit
6,0 ✱ fuse 1
10,0 4,0 ✱ ✱ 16,0 10,0
ro sw ro ro S132 - Fuse 2
B298 B273 B301 SB6 - Fuse 6 on fuse
6,0 2,5 1,5 2,5 4,0
holder
ro sw ro ro ro
SB17 - Fuse 17 on fuse
50
# holder
31 6 17 37 1
A
SB 31 SB 6 SB 17 SB 37 S123 J 104 SB31 - Fuse 31 on fuse
15A 5A 10A 25A
31a 6a 17a 37a 2
40A
holder
SB37 - Fuse 37 on fuse
1/30 25/30 35/15 7/30 13/31 38/31
holder
T17d - 17-pin connector,
black, coupling
0,5 1,0 2,5 4,0 4,0 2,5 0,35 1,0
sw/br sw/gn ro/ws ro/sw ro/sw ro/ws sw/br sw/gn station on left of A-
pillar
20 12 T17d T17f T17f T17f
/16 /17 /12 /15 T17f - 17-pin connector,
4,0
br
0,35
sw/br
1,0
sw/gn
green, coupling
station on left of A-
366 4 pillar
B278
43 - Earth point, lower
part of right A-pillar
6,0 0,35 0,5 4,0 2,5
br sw/br ro/sw br br
366 - Earth connection 1,
15 6 in main wiring
G476
43 671 671
harness
1 2 3 4 5 6 7 8 9 10 11 12 13 14
97-86013
671 - Earth point 1, on
front of left
longitudinal
member
B272 - Positive connection
(30), in main wiring
harness
B273 - Positive connection
(15), in main wiring
harness
B278 - Positive connection
2 (15a), in main
wiring harness
ws = white
sw = black B298 - Positive connection
ro = red 2 (30), in main
br = brown wiring harness
gn = green B301
bl = blue - Positive connection
gr = grey 5 (30), in main
li = purple wiring harness
ge = yellow * - up to October 2005
or = orange
rs = pink ** - from November
2005
# - 9-point relay
carrier, behind
driver storage
compartment
Audi A6 Current Flow Diagram No. 9 / 3
ABS control unit, ESP TCS
and ESP button, lateral
acceleration sender, yaw
rate sender, ESP sensor
unit, front brake pressure
sender
E256 - TCS and ESP
button
G200 - Lateral acceleration
sender
G202 - Yaw rate sender
G419 - ESP sensor unit
G518 - Front left brake
pressure sender
G519 - Front right brake
J 104 pressure sender
J104 - ABS control unit
4 12 10 23 9 37 24 32
J285 - Control unit in dash
J 285
T32/16 panel insert
0,35
0,35 ✱ ✱
0,5 ✱ ✱ ✱ 0,35
✱
0,35
✱
0,35 • 0,35 • 0,35
sw/gn gr/bl br/ws li/ge or/sw or/br sw/li T17f - 17-pin connector,
B340 C15 green, coupling
T17f/5
C16
T17f/9 T17f/10 T17f/11 station on left of A-
• • pillar
0,35 0,35 0,35 ✱ 0,35 ✱ 0,35 ✱ 0,35 ✱ 0,35 ✱ 0,35 ✱ 0,35 0,35 0,35
sw/gn gr/bl br/ws ws/ge li/ge br/ws ws/bl li/ge or/sw or/br sw/li
T32 - 32-pin connector,
6 5 1/58s 1 2 3 1 2 3 3 4 5/15
grey, on dash panel
G200 G202 insert
G419
4
E256 3/31
G518 G519 2/31 33 - Earth point, on right
1
✱✱ ✱✱✱
behind dash panel
0,35 0,35 4,0 0,35 0,35 1,5
sw/br br br br br br
374 - Earth connection 9,
7 374 392
33
in main wiring
15 16 17 18 19 20 21 22 23 24 25 26 27 28
harness
4E0-009030807 392 - Earth connection
27, in main wiring
harness
B340 - Connection 1 (58s),
in main wiring
harness
C15 - Connection 1, in
ws = white
sw = black headlight wiring
ro = red harness
br = brown C16 - Connection 2, in
gn = green
bl = blue
headlight wiring
gr = grey harness
li = purple • - CAN bus (data
ge = yellow wire)
or = orange
rs = pink * - models with
adaptive cruise
control (ACC)
** - up to October 2005
*** - from November
2005
Audi A6 Current Flow Diagram No. 9 / 4
ABS control unit, speed
sensor
G44 - Rear right speed
sensor
G45 - Front right speed
sensor
G46 - Rear left speed
sensor
G47 - Front left speed
sensor
J104 - ABS control unit
T17d - 17-pin connector,
black, coupling
station on left of A-
pillar
J 104
T17f - 17-pin connector,
green, coupling
22 34 18 6 20 33 19 31
station on left of A-
pillar
T17i - 17-pin connector,
0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5
br sw ge sw sw ws br sw red, coupling
station on right of
T17f T17f/3 T17d T17d/3 T17d T17d A-pillar
/4 /4 /2 /1

0,5
br
0,5
sw
0,5
ge
0,5
sw
0,5
sw
0,5
ws
0,5
br
0,5
sw
ws = white
sw = black
ro = red
T17i T17i/10
/11 br = brown
0,5 0,5 0,5 0,5 0,5 0,5 gn = green
br sw sw ws br sw bl = blue
gr = grey
1 2 1 2 1 2 1 2
li = purple
ge = yellow
or = orange
G47 G45 G46 G44 rs = pink

29 30 31 32 33 34 35 36 37 38 39 40 41 42
97-58863
Audi A6 Current Flow Diagram No. 9 / 5
ABS control unit, brake
light switch, output V-
signal
E415 - Entry and start
authorisation
switch
1
F - Brake light switch
6,0
ro F47 - Brake pedal switch
38 14 J104 - ABS control unit
SB 38 SB 14 J248 - Diesel direct
30A 5A T10d/2
38a 14a
injection system
0,5 0,35
ro/gn ge/li control unit
52 28 ✱ ✱ J271 - Motronic current
supply relay
J345 - Trailer detector
J 104
control unit

11 30 8
J393 - Convenience
54
system central
0,35
sw/ws
0,5
ro/gr
0,35
ro/sw
0,35
ws/ro control unit

T17f T17a/17 T17f/6 T17f/7 J623 - Engine control unit

/8
0,35 0,35
ro/sw ws/ro
B335 B336
SB14 - Fuse 14 on fuse
0,5 0,5 0,35 0,35 0,35 0,5 0,5 0,35 holder
sw/ws ro/gr ro/sw ro/sw ro/sw ro/sw ws/ro ws/ro
SB38 - Fuse 38 on fuse
E
T8i/7
415 J
T32d/20
393
4 2
holder
B337
F F47 T8i - 8-pin connector,
D109 T17a/1 1 3 T17a
/2 black, connector A,
0,5
sw/ws
0,35
sw/ws
4,0
ro/gr
0,35
ro/sw
0,5
ro/gn
0,5
ro/gr
0,35
ws/ro
on entry and start
authorisation
T32d
/19
T12n/4 2/87 J 248 ✱ 52 46 J 248 ✱ switch
J 393 J 345 J 271 J 623 J 623
43 44 45 46 47 48 49 50 51 52 53 54 55 56 T10d - 10-pin connector,
97-86015
pink, coupling
station on left of A-
pillar
T12n - 12-pin connector,
red, connector B,
on trailer detector
control unit
T17a - 17-pin connector,
red, coupling
station on
electronics box, left
in plenum chamber

T17f - 17-pin connector,

green, coupling
station on left of A-
pillar
T32d - 32-pin connector,
white, connector B,
on convenience
system central
control unit
B335 - Connection 1 (54),
in main wiring
harness
B336 - Connection 2 (54),
ws = white
sw = black in main wiring
ro = red harness
br = brown B337 - Connection 3 (54),
gn = green
bl = blue
in main wiring
gr = grey harness
li = purple D109 - Connection 7, in
ge = yellow engine
or = orange
rs = pink compartment wiring
harness
* - ⇒ Engine Current
Flow Diagram
** - Output V-signal,
optimal equipment
Audi A6 Current Flow Diagram No. 9 / 6
ABS control unit, ABS
return flow pump, inlet and
outlet valve, ABS return
flow pump relay
J104 - ABS control unit
J105 - ABS return flow
pump relay
J106 - ABS solenoid valve
relay
N99 - Front right ABS
inlet valve
N100 - Front right ABS
outlet valve
N101 - Front left ABS inlet
N101 N102 N133 N135 N99 N100 N134 N136 N225 N226 N227 N228 valve
J 104
N102 - Front left ABS
J 105 V39 M J 106 outlet valve
14 26
N133 - Rear right ABS inlet
valve
N134 - Rear left ABS inlet
0,35 • 0,35 • valve
or/br or/sw
N135 - Rear right ABS
outlet valve
T17d T17d N136 - Rear left ABS outlet
/5 /6
valve
0,35 0,35
N225 - Vehicle stabilization
or/br or/sw program switch
valve 1
T46a T46a
/5L /5H N226 - Vehicle stabilization
program switch
valve 2
N227 - Vehicle stabilization
57 58 59 60 61 62 63 64 65 66 67 68 69 70
program high
97-58865 pressure valve 1
N228 - Vehicle stabilization
ws = white
sw = black program high
ro = red pressure valve 2
br = brown T17d - 17-pin connector,
gn = green
bl = blue
black, coupling
gr = grey station on left of A-
li = purple pillar
ge = yellow T46a - 46-pin connector,
or = orange
rs = pink CAN separating
connector left
V39 - ABS return flow
pump
• - CAN bus (data
wire)

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