Current Flow Diagram

Edition 07.01

Main fuse

A97–0220

Fuse box

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

15 A
10 A

25 A
20 A

30 A

Fuse colours

–
–

–
–

–

green
white

blue
red

yellow

– orange

5 A – beige

7.5A

From fuse number 23 upwards the fuses in the
fuse box are designated as 223 etc. in the
Current Flow Diagram.

4-point relay carrier with screw connection

A97–0245

1

2

3

4

C

B

G

E

F

A

D

H

Audi A4

No. 30/1

Navigation system ”NS LOW”

From model year 2001

1

2

3

4

5

6

7

8

9

10

11

12

97–53914

13

14

A

2

4,0
sw

5

10A

5a

S

5

10A

8a

S

8

1,0

ro/bl

1,0

sw/ro

15

A

32

6/15

D

2,5

ro

2,5

ro

3/30

7/30

A

57

T8e/8

501

6,0

ro

6,0

ro

4,0
sw

6,0

ro

A

74

1,0

sw/ro

T8e/4

A

50

1,0

ro/bl

T8e/7

0,5

sw/ro

47

1,5

br

2,5

br

610

J

401

346

346

Current Flow Diagram

ws = white
sw = black

ro = red
br = brown
gn = green
bl = blue
gr = grey
li

= purple

ge = yellow

Edition 07.01

or = orange

Audi A4

No. 30/2

Navigation system with CD drive control unit, fuses

D

– Ignition/starter switch

J401 – Navigation system with CD drive control unit
S5

– Fuse in fuse box/relay plate

S15 – Fuse in fuse box/relay plate
T8e – 8-pin connector, black, navigation system with

CD drive control unit

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

A32 – Positive (+) connection (30), in dash panel

wiring harness

A50 – Positive (+) connection (30as), in dash panel

wiring harness

A57 – Positive (+) connection -3- (30), in dash panel

wiring harness

A74 – Connection (15a, fuse 5), in dash panel wiring

harness

15

16

17

18

19

20

21

22

23

24

25

26

97–53915

27

28

R

T20e/13

T20e/15

T20e/14

R

70

T20e/15

T20e/13

T20e/16 T20e/19

0,35

sw

*

0,35

gn

0,35

sw

0,35

gr

0,35

gn

0,35

sw

0,35

gn

T20e/17

0,35

gr

A

129

V

50

V

49

0,35

sw

0,35

gn

0,35

gr

0,35

gr

*

***

***

***

*

**

**

**

T10l/5

T10l/6

T10l/7

1/+

2/–

T10l/1

J

401

Current Flow Diagram

ws = white
sw = black

ro = red
br = brown
gn = green
bl = blue
gr = grey
li

= purple

ge = yellow

Edition 07.01

or = orange

Audi A4

No. 30/3

Navigation system with CD drive control unit,
internal loudspeaker (centre loudspeaker)

J401 – Navigation system with CD drive control unit
R

– Radio

R70 – Internal loudspeaker (centre loudspeaker)
T10l – 10-pin connector, red, radio connector IV
T20e – 20-pin connector, black, navigation system with

CD drive control unit

A129

– Connection (muting), in dash panel wiring

harness

V49 – Connection (audio frequency, NF +), in

communication wiring harness

V50 – Connection (audio frequency, NF –), in

communication wiring harness

*

– Models without radio (only export versions)

**

– Models with radio

*** – See applicable Current Flow Diagram:

Telephone

29

30

31

32

33

34

35

36

37

38

39

40

97–53916

41

42

A

179

T32/19

0,35
or/br

A

178

T32/20

0,35

or/li

J

285

T32a/21

0,22

ws/bl

A

27

A

159

T8e/3

T8e/1

T20e/5

T20e/2

T

16/15

0,35
or/br

0,35

or/li

0,35

ws/bl

0,35

gn/bl

0,35

gn/bl

HF

R1

R1

50

R

J

401

0,35
bl/ro

A

87

T8e/2

Current Flow Diagram

ws = white
sw = black

ro = red
br = brown
gn = green
bl = blue
gr = grey
li

= purple

ge = yellow

Edition 07.01

or = orange

Audi A4

No. 30/4

Control unit with display in dash panel insert,
navigation system with CD drive control unit

J285 – Control unit with display in dash panel insert
J401 – Navigation system with CD drive control unit
R1

– Aerial connection

R50 – Navigation aerial (GPS)
T8e – 8-pin connector, black, navigation system with

CD drive control unit

T16 – 16-pin connector, black, diagnostic connector
T20e – 20-pin connector, black, navigation system with

CD drive control unit

T32 – 32-pin connector, blue, on dash panel insert
T32a – 32-pin connector, green, on dash panel insert

A27 – Connection (speed signal), in dash panel wiring

harness

A87 – Connection (RF (reversing light)), in dash panel

wiring harness

A159

– Connection (L), 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

43

44

45

46

47

48

49

50

51

52

53

54

97–53917

55

56

J

285

A

175

2

3

11

6

7

8

4/58s

Out A

Out B

Enter

Telematik

0,22

gn

0,22

gn/gr

0,22

ge/ws

0,22

ge/bl

0,22
gn/li

0,22

ws/br

0,22
gr/bl

E

272

269

0,35

br/ge

T32/25

T32a/17

T32/28

T32/12

T32/7

T32/6

T32/5

0,22

ge/gn

T32/8

10/31

0,5

gr/bl

1

Menü

9

0,5

sw/ro

9

T32/32

269

0,22

br/ge

Current Flow Diagram

ws = white
sw = black

ro = red
br = brown
gn = green
bl = blue
gr = grey
li

= purple

ge = yellow

Edition 07.01

or = orange

Audi A4

No. 30/5

Function selection switch II, control unit with
display in dash panel insert

E272 – Function selection switch II
J285 – Control unit with display in dash panel insert
T32 – 32-pin connector, blue, on dash panel insert
T32a – 32-pin connector, green, on dash panel insert

269 – Earth connection (sender earth) -1-, in dash

panel wiring harness

A175

– Connection (58s), in dash panel wiring harness