Audi TT (2007 year). Manual — part 74

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

8J0-003020409

1

2

3

4

5

6

7

8

9

10

11

12

13

14

A

40

✱

ro

16,0

D1

ro/gn

4,0

B301

sw

50,0

T2b/2

ge

0,5

T75/27

J

234

T2b/1

br

0,5

T75/28

J

234

A1

B+

B1

SD

1

40A

SD

2

110A

SD

3

110A

--

N

253

C1

T47/1

J

104

ro

16,0

E1

B299

ro

10,0

sw

70,0

F1

P4

sw

35,0

28

sw

35,0

M

B

30

ro

4,0

50

33

14

sw

25,0

671

ro

6,0

49

B300

P2

sw

35,0

✱ ✱

U

6

✱ ✱

33

49

28

ws = white

sw = black

ro

= red

br

= brown

gn

= green

bl

= blue

gr

= grey

li

= purple

ge

= yellow

or

= orange

rs

= pink

Battery, starter, battery isolation igniter, main fuse box, in

luggage compartment, rear right, on the battery

A

Battery

B

Starter

J104 ABS control unit

J234 Airbag control unit

N253 Battery isolation igniter

SD1 Fuse 1 on fuse holder D

SD2 Fuse 2 on fuse holder D

SD3 Fuse 3 on fuse holder D

T2b 2-pin connector, purple, on battery isolation igniter

T47 47-pin connector, on ABS control unit

T75 75-pin connector, yellow, on airbag control unit

U6

Slave start socket

14

Earth point, on gearbox

40

Earth point, under rear right seat

671 Earth point 1, on front of left longitudinal member

B299 Positive connection 3 (30), in main wiring harness

B300 Positive connection 4 (30), in main wiring harness

B301 Positive connection 5 (30), in main wiring harness

P2

Positive connection (30), in battery wiring harness

P4

Positive connection 2 (30), in battery wiring harness

*

main fuse box, in luggage compartment, rear right, on the battery

**

models with slave start socket

Audi TT

Current Flow Diagram

No. 3 / 2

Edition 10.2010

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

8J0-003030409

15

16

17

18

19

20

21

22

23

24

25

26

27

28

sw

25,0

✱

ro/gn

6,0

A1

SA

3

60A

SA

4

110A

D1

ro

16,0

E1

B272

ro

6,0

250

C1

sw

35,0

14

SA

1

175A

B1

SA

2

80A

J1

SA

8

SA

7

ro/ge

4,0

206

H1

G1

SA

6

F1

SA

5

40A

ro

6,0

44

237

G

C

1

C

B+

T2/1

bl

0,5

D+

bl

0,5

T8h/4

T

4a/2

J

519

T2/2

bl/ws

0,5

DF

53

J

519

bl

0,5

T52c/32

bl

0,5

B344

#

##

##

237

206

14

250

44

53

ws = white

sw = black

ro

= red

br

= brown

gn

= green

bl

= blue

gr

= grey

li

= purple

ge

= yellow

or

= orange

rs

= pink

Alternator, main fuse holder, electronics box, in engine

compartment

C

Alternator

C1

Voltage regulator

J519 Onboard supply control unit

SA1 Fuse 1 on fuse holder A

SA2 Fuse 2 on fuse holder A

SA3 Fuse 3 on fuse holder A

SA4 Fuse 4 on fuse holder A

SA5 Fuse 5 on fuse holder A

SA6 Fuse 6 on fuse holder A

SA7 Fuse 7 on fuse holder A

SA8 Fuse 8 on fuse holder A

T2

2-pin connector, purple, on alternator

T4a 4-pin connector, black, on front left in engine compartment

T8h 8-pin connector, black, connector F, on onboard supply control

unit

T52c 52-pin connector, brown, on onboard supply control unit

B272 Positive connection (30), in main wiring harness

B344 Connection 1 (61), in main wiring harness

*

Main fuse holder, electronics box, in front left engine

compartment

#

up to May 2009

##

from June 2009

Audi TT

Current Flow Diagram

No. 3 / 3

Edition 10.2010

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

8J0-003040409

29

30

31

32

33

34

35

36

37

38

39

40

41

42

6/85

2/30

4/86

ro/sw

0,5

J

519

sw/bl

4,0

SC

31

40A

31a

SC

29

15A

29a

31

sw

4,0

29

B163

sw

4,0

T2t/2

J

519

sw

2,5

98

sw

4,0

179

sw

4,0

213

J

682

✱

ro

4,0

10

8/87

ro/sw

0,35

T8h/1

J

519

br

0,5

br

1,0

br

0,5

275

375

br

2,5

374

44

T11b/11

T52b/29

sw

4,0

276

sw

4,0

8/87

J

681

#

##

✱ ✱

#

#

##

276

98

179

213

10

275

ws = white

sw = black

ro

= red

br

= brown

gn

= green

bl

= blue

gr

= grey

li

= purple

ge

= yellow

or

= orange

rs

= pink

Terminal 50 voltage supply relay, fuses

J519 Onboard supply control unit

J681 Terminal 15 voltage supply relay 2

J682 Terminal 50 voltage supply relay

SC29 Fuse 29 on fuse holder C

SC31 Fuse 31 on fuse holder C

T2t

2-pin connector, black connector L, on onboard supply control

unit

T8h 8-pin connector, black, connector F, on onboard supply control

unit

T11b 11-pin connector, black, connector A, on onboard power supply

control unit

T52b 52-pin connector, yellow, on onboard supply control unit

44

Earth point, lower part of left A-pillar

374 Earth connection 9, in main wiring harness

375 Earth connection 10, in main wiring harness

B163 Positive connection 1 (15), in interior wiring harness

*

Relay carrier under left dash panel

**

Relay carrier on onboard power supply control unit

#

up to May 2009

##

from June 2009

Audi TT

Current Flow Diagram

No. 3 / 4

Edition 10.2010

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.

8J0-003050409

43

44

45

46

47

48

49

50

51

52

53

54

55

56

J

623

B298

ro/sw

1,0

SC

36

10A

ro

2,5

ro

6,0

3/86

1/30

J

271

4

br

2,5

T81/1

31

br

2,5

T81/2

31

ro

6,0

672

br

2,5

ro/ge

6,0

188

✱

ro

4,0

245

T81/62

ro/sw

0,35

ro/sw

0,5

51

T81/28

bl/ws

0,35

bl/ws

0,5

20

T

4a/1

SC

32

5A

32a

ro

6,0

ro/sw

0,5

55

36a

8

36

32

23

2/87

C

24

1/31

2

✱

sw/gr

0,5

sw/gr

0,35

br

2,5

211

366

378

br

6,0

br

2,5

br

2,5

83

2/30

♦

♦♦

4/86

♦

♦♦

6/85

♦

♦♦

8/87

♦

♦♦

DFDFDF

30

sw/ge

0,35

T81/23

4/85

#

#

##

8

20

51

23

245

55

188

211

83

ws = white

sw = black

ro

= red

br

= brown

gn

= green

bl

= blue

gr

= grey

li

= purple

ge

= yellow

or

= orange

rs

= pink

Engine control unit, Motronic current supply relay,

suppression filter

C24 Suppression filter

J271 Motronic current supply relay

J623 Engine control unit

SC32 Fuse 32 on fuse holder C

SC36 Fuse 36 on fuse holder C

T4a 4-pin connector, black, on front left in engine compartment

T81 81-pin connector, black, on engine control unit

366 Earth connection 1, in main wiring harness

378 Earth connection 13, in main wiring harness

672 Earth point 2, on front of left longitudinal member

B298 Positive connection 2 (30), in main wiring harness

*

Relay and fuse carrier in electronics box engine compartment

♦

up to May 2008

♦♦

from June 2008

#

up to May 2009

##

from June 2009

Audi TT

Current Flow Diagram

No. 3 / 5

Edition 10.2010