Audi TT (2007 year). Manual - part 173

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.

8J0-048160410

197

198

199

200

201

202

203

204

205

206

207

208

209

210

J

519

li/ws

0,35

T52b/13

br

0,35

375

br

1,0

E

1

T6/2

T6/1

31

148

li/ge

0,35

T52c/18

T6/3

gr/bl

0,5

T52b/51

T6/4

gr/bl

0,35

gr/bl

0,35

W

1

gr/bl

0,35

E

284

B340

✱

✱✱

✱✱

✱✱

✱✱

148

ws = white

sw = black

ro

= red

br

= brown

gn

= green

bl

= blue

gr

= grey

li

= purple

ge

= yellow

or

= orange

rs

= pink

Onboard supply control unit, light switch

E1

Light switch

E284 Garage door operating unit

J519 Onboard supply control unit

T6

6-pin connector, black, connector C, on light switch

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

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

W1

Front interior light

375 Earth connection 10, in main wiring harness

B340 Connection 1 (58s), in main wiring harness

*

Coming Home switch

**

no longer fitted, phased

 Audi TT

Current Flow Diagram

No.  48 / 16

Edition  04.2010

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.

Air conditioning system

⇒ Heater (9AA)

⇒ Air conditioning system (9AK)

from June 2009
Notes:

For information concerning

♦ Position of relays and fuses
♦ Multi-pin connections
♦ Control units and relays
♦ Earth connections
⇒  List of Fitting Locations!

For information concerning

♦ Fault Finding Programs
⇒  guided fault finding

 Audi TT

Current Flow Diagram

No.  49 / 1

Edition  04.2009

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.

8J0-049020409

1

2

3

4

5

6

7

8

9

10

11

12

13

14

J

255

T16d

/15

30

ro

4,0

ro

6,0

B300

SC

12

10A

12

SD

3

ro/gn

1,0

44

br

1,5

br

1,0

384

T16d

/16

31

ro

16,0

B299

SC

16

10A

16

16a

12a

110 A

✱

sw/ro

0,5

B278

✱

sw

4,0

SC

1

10A

1

SC

4

5A

4

4a

1a

sw/ro

0,5

30

J

519

sw

4,0

B163

sw

4,0

5

2

✱

#

B272

ro

16,0

E1

SA

4

110 A

B272

E1

ro

10,0

44

br

1,0

br

0,35

375

374

br

2,5

J

681

1

4

8

2

##

sw/ws

0,35

6

T52b

/12

2

5

30

ws = white

sw = black

ro

= red

br

= brown

gn

= green

bl

= blue

gr

= grey

li

= purple

ge

= yellow

or

= orange

rs

= pink

Climatronic control unit, fuses

J255 Climatronic control unit

J519 Onboard supply control unit

J681 Terminal 15 voltage supply relay 2

SA4 Fuse 4 on fuse holder A

SC1 Fuse 1 on fuse holder C

SC4 Fuse 4 on fuse holder C

SC12 Fuse 12 on fuse holder C

SC16 Fuse 16 on fuse holder C

SD3 Fuse 3 on fuse holder D

T16d 16-pin connector, black, connector D, on Climatronic 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

384 Earth connection 19, in main wiring harness

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

B272 Positive connection (30), in main wiring harness

B278 Positive connection 2 (15a), in main wiring harness

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

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

*

Operating unit for air conditioning

**

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

#

Main fuse holder, electronics box, in front left engine

compartment

##

Relay carrier on onboard power supply control unit

 Audi TT

Current Flow Diagram

No.  49 / 2

Edition  04.2009

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.

8J0-049030409

15

16

17

18

19

20

21

22

23

24

25

26

27

28

J

255

43

4

T

10l/2

ro/bl

4,0

SB

8

30A

ro/bl

2,5

89

8a

✱

B272

ro/ws

4,0

21

B407

V

2

T16c/12

or/br

0,35

ro

6,0

B272

SB

9

25A

9a

9

8

ro/bl

4,0

21

SB

12

40A

12a

12

ST1

or/br

0,35

or/br

0,35

•

T52c

/16

B406

or/br

0,35

T20d

/5

J

519

J

533

E

230 ✱ ✱

B398

T16c/13

or/gn

0,35

or/gn

0,35

•

T52c

/15

B397

T20d/15

J

519

J

533

or/gn

0,35

or/gn

0,35

2

sw/ws

0,35

T20k

/19

1

bl/ws

0,35

T20k

/20

3/31

T

10l

/1

br

4,0

br

4,0

J

126

M

89

21

21

ws = white

sw = black

ro

= red

br

= brown

gn

= green

bl

= blue

gr

= grey

li

= purple

ge

= yellow

or

= orange

rs

= pink

Climatronic control unit, fresh air blower control unit, fresh

air blower

E230 Heated rear window button

J126 Fresh air blower control unit

J255 Climatronic control unit

J519 Onboard supply control unit

J533 Data bus diagnostic interface

SB8 Fuse 8 on fuse holder B

SB9 Fuse 9 on fuse holder B

SB12 Fuse 12 on fuse holder B

T10l 10-pin connector, black, behind the dash panel on right

T16c 16-pin connector, brown, connector C, on Climatronic control

unit

T20d 20-pin connector, black, on data bus diagnostic interface

T20k 20-pin connector, connector B, on Climatronic control unit

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

V2

Fresh air blower

43

Earth point, lower part of right A-pillar

B272 Positive connection (30), in main wiring harness

B397 Connection 1 (convenience CAN bus, high), in main wiring

harness

B398 Connection 2 (convenience CAN bus, high), in main wiring

harness

B406 Connection 1 (convenience CAN bus, low), in main wiring

harness

B407 Connection 2 (convenience CAN bus, low), in main wiring

harness

•

CAN bus (data wire)

*

Operating unit for air conditioning

**

Operation for heated rear window via CAN bus, heated rear

window ⇒ CFD basic equipment

 Audi TT

Current Flow Diagram

No.  49 / 3

Edition  04.2009