Current Flow Diagram
Edition 08.02
A97–0242
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
3
4
1
2
44
43
42
41
40
37
39
38
36
35
34
33
32
31
30
29
28
27
26
25
24
Res
Res
Res
Res
Res
Audi A4
No. 7/1
Radio navigation system (RNS-D)
From September 2002
Fuse box
♦
Dash panel, driver’s side
Fuse colours
30 A - green
25 A - white
20 A - yellow
15 A - blue
10 A - red
7.5 A - brown
5 A - beige
Note:
From fuse number 23 upwards the fuses in the fuse box are
designated as 223 etc. in the Current Flow Diagram.
Current Flow Diagram
Edition 08.02
A97–0248
5
6
7
1
2
3
4
A97–0247
8
11
12
13
14
2
3
4
5
6
7
10
9
16
15
17
A
B
1
Audi A4
No. 7/2
Connector point with screw connection
♦
In electronics box, plenum chamber
3 - 17-pin connector, red (T17d)
Connector point, A pillar
♦
On left-hand side, bottom, behind side trim
15 - 17-pin connector, green (T17b)
17 - 17-pin connector, black (T17)
Current Flow Diagram
Edition 08.02
A97–0245
1
2
3
4
C
B
G
E
F
A
D
H
A97–0399
8
9
7
A
1
B
2
3
4
5
6
C
D
E
F
G
Audi A4
No. 7/3
4-point relay carrier with screw connection
♦
Dash panel, driver’s side
9-point relay carrier with onboard power supply control unit
♦
Dash panel, driver’s side, behind 3-point relay carrier
6 - X contact relief relay
1
2
3
4
5
6
7
8
9
10
11
12
13
14
97–54011
T8/7
2,5
ro/bl
T8/8
1,5
br
610
A
46
2,5
br
610
0,5
ro/bl
117
**
0,5
sw
501
A
32
A
2
2,5
ro
4,0
sw
2,5
ro
T26/4
6,0
ro
6,0
ro
T8/5
2,5
ro/bl
0,35
ro/bl
140
8/86s
3/30
7/30
6/15
0 1
0,5
ro
0,5
ro
T8/4
D
J
402
A
21
2,5
ro/bl
64
39a
39
239
20A
S
2,5
ro/bl
2,5
ro/bl
48
*
12
A
57
6,0
ro
346
Current Flow Diagram
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li
= purple
ge = yellow
Edition 08.02
or = orange
Audi A4
No. 7/4
Voltage supply
D
– Ignition/starter switch
J402 – Operating electronics control unit, navigation
S239 – Fuse in fuse box
T8
– 8-pin connector, black, radio connector III
T26 – 26-pin connector, black, on operating
electronics control unit, navigation
346 – Earth connection (audio), in dash panel wiring
harness
501 – Screw connection -2- (30), on relay plate
610 – Earth point (audio), below centre console, front
A2
– Positive (+) connection (15), in dash panel
wiring harness
A21 – Connection (86s), in dash panel wiring harness
A32 – Positive (+) connection (30), in dash panel
wiring harness
A46 – Positive (+) connection (30 - from radio), in
dash panel wiring harness
A57 – Positive (+) connection -3- (30), in dash panel
wiring harness
✱
– Models with active loudspeakers
✱✱
– Models with Bose loudspeakers
15
16
17
18
19
20
21
22
23
24
25
26
97–53409
27
28
402
J
T26/5
0,35
bl/ws
T
17/13
0,35
bl/ws
0,35
sw
T26/17
0,35
bl/ro
T
17d/15
1,0
bl/ro
1,0
bl/ro
J
104
F
4
A
127
A
87
34
2
T20d/7
T20d/12
V
50
V
49
0,35
sw
0,35
gn
T8/2
0,35
gr
A
129
0,35
sw
0,35
gn
0,5
gr
*
*
*
Current Flow Diagram
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li
= purple
ge = yellow
Edition 08.02
or = orange
Audi A4
No. 7/5
Operating electronics control unit, navigation
F4
– Reversing light switch
J104 – ABS with EDL control unit
J402 – Operating electronics control unit, navigation
T8
– 8-pin connector, black, radio connector III
T17 – 17-pin connector, black, connector point, A
pillar, left
T17d – 17-pin connector, red, connector point,
electronics box, plenum chamber
T20d – 20-pin connector, black, radio connector I
T26 – 26-pin connector, black, on operating
electronics control unit, navigation
A87 – Connection (RF (reversing light)), in dash panel
wiring harness
A127
– Connection (rear left speed sensor), in dash
panel wiring harness
A129
– Connection (muting), in dash panel wiring
harness
V49 – Connection (low frequency, NF +), in
communication wiring harness
V50 – Connection (low frequency, NF -), in
communication wiring harness
✱
– See applicable Current Flow Diagram:
Telephone
29
30
31
32
33
34
35
36
37
38
39
40
41
42
97–53410
402
J
R
21
1,5
bl/ge
1,5
br/gn
1,5
gn/bl
1,5
br/bl
1–
2+
1–
2+
T
20a
/2
T
20a
/12
1,5
bl/ge
1,5
br/gn
1,5
gn/bl
1,5
br/bl
0,35
bl/ws
0,35
br/ws
2
1
2
1
2
1
2
1
0,35
bl/ws
0,35
br/ws
T8a/6
R
26
R
R
23
R
R
27
R
T8a/5
T8a/4
T8a/3
2
1
R
70
T
20
/2
T
20
/12
0,5
br/gn
0,5
gn/bl
Current Flow Diagram
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li
= purple
ge = yellow
Edition 08.02
or = orange
Audi A4
No. 7/6
Active loudspeakers, front
J402 – Operating electronics control unit, navigation
R21 – Bass loudspeaker, front left
R23 – Bass loudspeaker, front right
R26 – Middle-high tone loudspeaker, front left
R27 – Middle-high tone loudspeaker, front right
R70 – Internal loudspeaker (centre loudspeaker)
T8a – 8-pin connector, brown, radio connector II
T20 – 20-pin connector, black, door, A pillar, left
T20a – 20-pin connector, black, door, A pillar, right
43
44
45
46
47
48
49
50
51
52
53
54
55
56
97–55521
402
J
T20d/1
2,5
br
0,35
ws
0,5
ws
0,35
gn
2,5
ro/bl
5
R
12
T20d/2
T20d/3
T20d/6
1
3
2
9
23
22
R
15
1,0
ro/ge
1,0
br/ge
1,0
ro/gn
1,0
br/sw
1–
2+
1–
2+
T
20b
/2
T
20b
/12
1,5
ro/ge
1,5
br/ge
1,5
ro/ge
0,35
bl/ws
0,35
br/ws
2
1
2
1
2
1
2
1
0,35
bl/ws
0,35
br/ws
R
34
R
R
17
R
R
35
R
T
20c
/2
T
20c
/12
17
18
20
21
15
14
1,0
ro/gr
1,0
br/gr
R
100
0,35
br
0,35
br
2/+
1/–
1,5
br/ge
346
Current Flow Diagram
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li
= purple
ge = yellow
Edition 08.02
or = orange
Audi A4
No. 7/7
Active loudspeakers, rear
J402 – Operating electronics control unit, navigation
R12 – Amplifier
R15 – Bass loudspeaker, rear left
R17 – Bass loudspeaker, rear right
R34 – Middle-treble tone loudspeaker, rear left
R35 – Middle-treble tone loudspeaker, rear right
R100 – Bass loudspeaker
T20b – 20-pin connector, black, door, B pillar, left
T20c – 20-pin connector, black, door, B pillar, right
T20d – 20-pin connector, black, radio connector I
346 – Earth connection (audio), in dash panel wiring
harness
57
58
59
60
61
62
63
64
65
66
67
68
69
70
97–55522
402
J
R
21
R
23
R
26
R
27
1,5
bl/ge
1,5
br/gn
T
20/2
1,5
gn/bl
1,5
br/bl
T20d/1
0,35
gr
0,35
ge
0,5
ws
0,35
br
0,35
ws
0,35
gn
18
19
1–
2+
1–
2+
R
12
2,5
br
0,22
br
2,5
ro/bl
6
7
11
6
8
10
9
17
16
25
13
0,35
133
T20d/2 T20d/3 T20d/4 T20d/5 T20d/6
T
20/12
T
20a
/2
T
20a
/12
1,5
bl/ge
1,5
br/gn
1,5
gn/bl
1,5
br/bl
0,35
bl/ws
0,35
br/ws
2
1
2
1
2
1
2
1
0,35
bl/ws
0,35
br/ws
1,0
gn
R
70
1
2
1,0
sw
346
346
–
+
Current Flow Diagram
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li
= purple
ge = yellow
Edition 08.02
or = orange
Audi A4
No. 7/8
Bose loudspeakers, front
J402 – Operating electronics control unit, navigation
R12 – Amplifier
R21 – Bass loudspeaker, front left
R23 – Bass loudspeaker, front right
R26 – Middle-high tone loudspeaker, front left
R27 – Middle-high tone loudspeaker, front right
R70 – Internal loudspeaker (centre loudspeaker)
T20 – 20-pin connector, black, door, A pillar, left
T20a – 20-pin connector, black, door, A pillar, right
T20d – 20-pin connector, black, radio connector I
133 – Earth connection, in loudspeaker wiring
harness
346 – Earth connection (audio), in dash panel wiring
harness
71
72
73
74
75
76
77
78
79
80
81
82
83
84
97–53413
2,5
ro/gr
2,5
br/gr
1–
2+
15
14
R
100
R
12
R
15
1,5
ro/ge
1,5
br/ge
1,5
ro/gn
1,5
br/sw
1–
2+
1–
2+
T
20b
/2
T
20b
/12
1,5
ro/ge
1,5
br/ge
0,35
bl/ws
0,35
br/ws
2
1
2
1
2
1
2
1
0,35
bl/ws
0,35
br/ws
R
34
R
R
17
R
R
35
R
T
20c
/2
T
20c
/12
20
21
22
23
1,5
br/sw
402
J
1,5
ro/gn
Current Flow Diagram
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li
= purple
ge = yellow
Edition 08.02
or = orange
Audi A4
No. 7/9
Bose loudspeakers, rear
J402 – Operating electronics control unit, navigation
R12 – Amplifier
R15 – Bass loudspeaker, rear left
R17 – Bass loudspeaker, rear right
R34 – Middle-treble tone loudspeaker, rear left
R35 – Middle-treble tone loudspeaker, rear right
R100 – Bass loudspeaker
T20b – 20-pin connector, black, door, B pillar, left
T20c – 20-pin connector, black, door, B pillar, right
85
86
87
88
89
90
91
92
93
94
95
96
97
98
97–55524
402
J
7
0,5
ro
NF–R
10
0,5
ws
NF–L
NF–31
9
3
8
0,5
ge
gesch.
Plus
2
0,5
sw
Clock
6
0,5
bl
Dauer–
plus
4
0,5
or
CD–Bus
Data out
T12k
/6
1
0,5
rosa
R
41
T12k
/11
T12k
/12
T16j
/16
T12k
/10
T12k
/2
T12k
/8
T12k
/9
CD–Bus
Data in
0,5
br
0,22
br/sw
0,22
br/sw
309
310
0,35
br
V
14
346
T12k/4
0,5
sw/ge
4,0
sw/ge
2
J
59
A
34
6
Current Flow Diagram
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li
= purple
ge = yellow
Edition 08.02
or = orange
Audi A4
No. 7/10
CD changer
J59 – X contact relief relay
J402 – Operating electronics control unit, navigation
R41 – CD changer
T12k – 12-pin connector, blue, on operating electronics
control unit, navigation, connector B
T16j – 16-pin connector, black, on operating
electronics control unit, navigation, connector D
309 – Earth connection -1-, screening, in CD changer
wiring harness
310 – Earth connection -2-, screening, in CD changer
wiring harness
346 – Earth connection (audio), in dash panel wiring
harness
A34 – Connection (75x), in dash panel wiring harness
V14 – Connection (screening), in CD changer wiring
harness
99
100
101
102
103
104
105
106
107
108
109
110
97–53415
111
112
415
J
0,35
br
0,35
ws
0,35
sw
NF–Masse NF–L
Videomasse
NF–R
R in
G in
B in
Video Sync.
Schirmmasse
T11/1
T11/2
T11/3
T11/5
T11/4
T11/11
T54/8
T54/7
T54/5
T54/10 T54/11 T54/9
0,5
br/ws
0,5
sw/bl
0,5
br/gr
0,5
br/sw
0,5
li
0,35
br/ge
0,35
br/ge
0,35
br/ro
0,35
ro
0,35
gn
0,35
bl
T11/10
T11/9
T11/8
T54/16 T54/17 T54/14 T54/15 T54/12 T54/13
402
J
0,35
br/li
Current Flow Diagram
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li
= purple
ge = yellow
Edition 08.02
or = orange
Audi A4
No. 7/11
Navigation operating electronics control unit,
navigation/TV tuner
J402 – Operating electronics control unit, navigation
J415 – Navigation/TV tuner
T11 – 11-pin connector, on navigation/TV tuner
T54 – 54-pin connector, black, on navigation/TV tuner
113
114
115
116
117
118
119
120
121
122
123
124
97–53416
125
126
11
R
HF
HF
HF
HF
br/2
HF
R1
B
ZF
T26/13
T54/3
0,35
gr/ro
0,35
gr/ro
0,35
gr/ro
T26/26
T54/2
0,35
gr/ws
0,35
gr/ws
0,35
gr/ws
116
114
402
J
HF
HF
116
120
114
120
8
0,5
ro/bl
0,5
br
346
TV1
TV2
TV3
TV4
R1
R1
9
8
T54/19
T54/20
415
J
94
R
0,35
gr/ro
0,35
gr/ws
K
br/1
gn/2
gn/1
A
149
A
148
Current Flow Diagram
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li
= purple
ge = yellow
Edition 08.02
or = orange
Audi A4
No. 7/12
Navigation operating electronics control unit,
navigation/TV tuner, aerial, navigation interface
J402 – Operating electronics control unit, navigation
J415 – Navigation/TV tuner
R1
– Aerial connection
R11 – Aerial
R94 – Navigation interface
T26 – 26-pin connector, black, on operating
electronics control unit, navigation
T54 – 54-pin connector, black, on navigation/TV tuner
346 – Earth connection (audio), in dash panel wiring
harness
A148
– Connection (navigation CAN bus, high), in dash
panel wiring harness
A149
– Connection (navigation CAN bus, low), in dash
panel wiring harness
97–55525
A
179
T32/19
0,35
or/br
A
178
T32/20
0,35
or/li
A
159
T
16/15
0,35
gn/bl
T32a/17
0,5
gr/bl
6
2
3
T8/1
T8/6
T8/3
12
0,35
br
9
0,35
or/br
0,35
or/li
J
402
0,35
ro/bl
J
285
T54/21
0,35
gn/bl
J
415
A
27
A
175
94
R
0,5
ws/bl
0,35
gr/bl
0,35
gn/bl
346
33
0,35
ws/bl
J
104
0,35
ws/bl
T
17b
/17
127
128
129
130
131
132
133
134
135
136
137
138
139
140
Current Flow Diagram
ws = white
sw = black
ro = red
br = brown
gn = green
bl = blue
gr = grey
li
= purple
ge = yellow
Edition 08.02
or = orange
Audi A4
No. 7/13
Control unit with display in dash panel insert,
navigation operating electronics control unit,
navigation interface, CAN bus
J104 – ABS with EDL control unit
J285 – Control unit with display in dash panel insert
J402 – Operating electronics control unit, navigation
J415 – Navigation/TV tuner
R94 – Navigation interface
T8
– 8-pin connector, black, radio connector III
T16 – 16-pin connector, black, diagnostic connector
T17b – 17-pin connector, green, connector point, A
pillar, left
T32 – 32-pin connector, blue, on dash panel insert
T32a – 32-pin connector, green, on dash panel insert
T54 – 54-pin connector, black, on navigation/TV tuner
346 – Earth connection (audio), in dash panel wiring
harness
A27 – Connection (speed signal), in dash panel wiring
harness
A159
– Connection (L), in dash panel wiring harness
A175
– Connection (58s), in dash panel wiring harness
A178
– Connection (infotainment CAN bus, high), in
dash panel wiring harness
A179
– Connection (infotainment CAN bus, low), in
dash panel wiring harness