AUDI TT 2012 — Airbag systems (US equipment) . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI TT 2012 - Airbag control unit

A	Battery
B	Starter
C	Alternator
J234	Airbag control unit
J519	Onboard supply control unit
J533	Data bus diagnostic interface
J681	Terminal 15 voltage supply relay 2
N253	Battery isolation igniter
SC7	Fuse 7 on fuse holder C
SC10	Fuse 10 on fuse holder C
T2b	2-pin connector
T20d	20-pin connector
T75	75-pin connector
637	Earth point, airbag control unit
B163	Positive connection 1 (15), in interior wiring harness
B280	Positive connection 4 (15a) in main wiring harness
B383	Connection 1 (powertrain CAN bus, high), in main wiring harness
B384	Connection 2 (powertrain CAN bus, high), in main wiring harness
B390	Connection 1 (powertrain CAN bus, low), in main wiring harness
B391	Connection 2 (powertrain CAN bus, low), in main wiring harness
*	see applicable current flow diagram for basic equipment
*2	Main fuse box, on battery on rear right in luggage compartment
*3	From June 2009
*4	Up to May 2009
*5	Data bus wire (CAN bus)

Wiring Diagram AUDI TT 2012 - Airbag coil connector and return ring with slip ring - Airbag control unit - Driver side airbag igniter - Driver side airbag igniter 2

F138	Airbag coil connector and return ring with slip ring
J234	Airbag control unit
N95	Driver side airbag igniter
N131	Front passenger side airbag igniter 1
N132	Front passenger side airbag igniter 2
N250	Driver side airbag igniter 2
T4d	4-pin connector, on steering column electronics control unit
T5c	5-pin connector, behind dash panel, right
T75	75-pin connector
43	Earth point, lower part of right A-pillar
381	Earth connection 16, in main wiring harness
*	From June 2009

Wiring Diagram AUDI TT 2012 - Airbag control unit - Rear belt tensioner igniter on driver side - Side airbag igniter on driver side - Side airbag igniter on front passenger side

J234	Airbag control unit
N153	Driver seat belt tensioner igniter 1
N154	Front passenger seat belt tensioner igniter 1
N196	Rear belt tensioner igniter on driver side
N197	Rear belt tensioner igniter on front passenger side
N199	Side airbag igniter on driver side
N200	Side airbag igniter on front passenger side
T2n	2-pin connector, on left B-pillar
T2o	2-pin connector, on right B-pillar
T2w	2-pin connector, on left B-pillar
T2x	2-pin connector, on right B-pillar
T3c	3-pin connector, under driver seat
T3d	3-pin connector, under front passenger seat
T3o	3-pin connector, on left B-pillar
T3p	3-pin connector, on right B-pillar
T75	75-pin connector
383	Earth connection 18, in main wiring harness
*	Roadster
*2	Coupé

Wiring Diagram AUDI TT 2012 - Front airbag crash sensor for driver side - Front airbag crash sensor for front passenger side - Airbag control unit - Front passenger side airbag deactivated warning lamp - Driver side knee airbag igniter - Front passenger side knee airbag igniter

G283	Front airbag crash sensor for driver side
G284	Front airbag crash sensor for front passenger side
J234	Airbag control unit
K145	Front passenger side airbag deactivated warning lamp
N295	Driver side knee airbag igniter
N296	Front passenger side knee airbag igniter
SC1	Fuse 1 on fuse holder C
T2u	2-pin connector
T2v	2-pin connector
T3i	3-pin connector, on driver side knee airbag igniter
T3k	3-pin connector, on front passenger side knee airbag igniter
T75	75-pin connector
383	Earth connection 18, in main wiring harness
B277	Positive connection 1 (15a) in main wiring harness
*	From June 2009

Wiring Diagram AUDI TT 2012 - Driver side belt switch - Side airbag crash sensor on driver side - Driver side belt force limiter - Front passenger side belt force limiter - Driver side seat position sensor - Airbag control unit

E24	Driver side belt switch
G179	Side airbag crash sensor on driver side
G180	Side airbag crash sensor on front passenger side
G551	Driver side belt force limiter
G552	Front passenger side belt force limiter
G553	Driver side seat position sensor
J234	Airbag control unit
T2aa	2-pin connector, in driver seat
T2ah	2-pin connector
T2ai	2-pin connector
T2q	2-pin connector
T2r	2-pin connector
T10h	10-pin connector, under driver seat
T20a	20-pin connector, in front left door
T20b	20-pin connector, in front right door
T75	75-pin connector
109	Earth connection, in airbag wiring harness
383	Earth connection 18, in main wiring harness
*	Up to May 2010
*2	From June 2010
*3	From June 2009

Wiring Diagram AUDI TT 2012 - Front passenger side belt switch - Pressure sensor for seat occupied recognition - Seat belt force sensor for seat occupied recognition - Airbag control unit - Seat occupied recognition control unit

E25	Front passenger side belt switch
G452	Pressure sensor for seat occupied recognition
G453	Seat belt force sensor for seat occupied recognition
J234	Airbag control unit
J706	Seat occupied recognition control unit
T2ab	2-pin connector, in front passenger seat
T3aa	3-pin connector, in front passenger seat
T10i	10-pin connector, under front passenger seat
T75	75-pin connector
140	Earth connection 2, in seat adjustment wiring harness
383	Earth connection 18, in main wiring harness

AUDI TT 2012

Left number plate light -X4-/Right number plate light -X5-

AUDI TT 2012 Routing rear lid/roof

Routing rear lid/roof

1 -	Aerial wires to right A-pillar

2 -	Coupling station right rear lid, in rear right roof frame

3 -	Transition rear lid to luggage compartment

4 -	Aerial amplifier -R24- on rear lid upper right

5 -	Radio, telephone and navigation system aerial -R52-

6 -	Aerial amplifier 4 -R113- on rear lid upper left

7 -	Aerial connections TV tuner -R78- on right in luggage compartment

8 -	Aerial amplifier 2 -R111- on rear lid bottom right

9 -	Left number plate light -X4-/Right number plate light -X5-

10 -	Aerial connections aerial amplifier for mobile telephone -R86-

Aerial connectionssatellite radio -R146-, only USA

11 -	Coupling station left rear lid behind side panel

12 -	Transition rear lid to luggage compartment

13 -	Wiring harness to left A-pillar

14 -	Front interior light -W1-

15 -	Sun blind, right illuminated vanity mirror

Routing door

1 -	Door coupling - A-pillar 20-pin connector -T20a-/20-pin connector -T20b-

2 -	Front left mid-range loudspeaker -R103-/front right mid-range loudspeaker -R104-

3 -	Driver side interior locking button for central locking system -E308-/front passenger side interior locking button -E309-

4 -	Mirror adjustment switch -E43-/mirror adjustment changeover switch -E48-

5 -	Operating unit for window regulator in driver door -E512-/window regulator switch in front passenger door -E107-

6 -	Alarm system off switch -E217-/interior monitoring switch -E183-

7 -	Driver side central locking lock unit -F220-/Rear left central locking lock unit -F222-

8 -	Side airbag crash sensor on driver side -G179-/side airbag crash sensor on front passenger side -G180-

9 -	Driver door control unit -J386-/front passenger side door control unit -J387-

10 -	Driver door control unit -J386-/front passenger side door control unit -J387-

11 -	Fuel tank flap release button -E319-/rear lid remote release button -E233-

12 -	Front left bass loudspeaker -R21-/front right bass loudspeaker -R23-

Routing dash panel wiring harness

1 -	Wiring harness to A-pillar, left roof

2 -	Front left treble loudspeaker -R20-

3 -	Tyre pressure monitor control unit 2 -J793-

4 -	Headlight range control, control unit -J431-

5 -	Photosensor for sunlight intensity -G107-

6 -	Centre mid-range loudspeaker -R158-

7 -	Radio -R-/navigation system with CD drive control unit -J401-

8 -	Wiring harness along module carrier

9 -	CD changer -R41-

10 -	Front right treble loudspeaker -R22-

11 -	Wiring harness along module carrier to A-pillar bottom right

12 -	Wiring harness to A-pillar, right roof

13 -	Coupling front passenger

14 -	CAN bus connection

15 -	Wiring harness from A-pillar to luggage compartment, right

16 -	Right A-pillar duct

17 -	Chip card reader unit -R99-

18 -	Key operated switch to deactivate front passenger side airbag -E224-

19 -	Wiring harness from centre console top along centre console right to rear seat

20 -	Connections radio -R-/navigation system with CD drive control unit -J401-

21 -	Wiring harness from centre console top along centre console left

22 -	Connection switch module steering column

23 -	onboard supply control unit -J519-

24 -	Light switches -E1-

25 -	Wiring harness from A-pillar to luggage compartment, left

26 -	CAN bus connection

27 -	Coupling driver door 20-pin connector -T20a-

28 -	Left A-pillar duct

29 -	Fuse holder on left in dash panel

30 -	Wiring harness, duct interior - engine compartment

Routing in the interior

1 -	Wiring harness to right A-pillar

2 -	Coupling station under front passenger seat

3 -	Electronically controlled damping control unit -J250-

4 -	Connections telephone bracket -R126- in centre console

5 -	Connections right tank sender

6 -	40Earth point, under rear right seat

7 -	Rear right mid-range and bass loudspeaker -R160-

8 -	Wiring harness to rear light, control unit in luggage compartment right

9 -	Earth wire battery -A-

10 -	Wiring harness under rear seat

11 -	Cable from battery isolation igniter -N253- in luggage compartment to starter -B-

12 -	Connections right tail light and right in luggage compartment control units

13 -	battery -A- with main fuse box and battery isolation igniter -N253- in luggage compartment, rear right

14 -	Wiring harness to digital sound package control unit -J525- and left tail light

15 -	Cable in luggage compartment starter -B-

16 -	Control units in insert right luggage compartment

17 -	Duct starter cable under vehicle floor

18 -	Wiring harness to digital sound package control unit -J525-

19 -	Wiring harness to speakers rear left

20 -	Coupling station left rear lid behind side panel

21 -	Centre loudspeaker -R148-

22 -	Rear left mid-range and bass loudspeaker -R159-

23 -	Connections left tank sender

24 -	Starter cable under vehicle floor

25 -	Wiring harness to left A-pillar

26 -	Telephone transmitter and receiver unit -R36- under driver seat

27 -	Coupling station under driver seat

28 -	Wiring harness to centre console front right

29 -	Row of switches centre console

30 -	Airbag control unit -J234- under centre console

31 -	Wiring harness from centre console to rear left under rear seat

32 -	Wiring harness to centre console front left

Plenum chamber - engine compartment wiring harness routing

1 -	High tone horn -H2-

2 -	Wiring harness engine compartment right to headlight

3 -	Transition to plenum chamber right

4 -	Duct to dash panel right

5 -	Alarm horn -H12-

6 -	Engine control unit -J623-

7 -	Wiring harness to clutch Lambda probe

8 -	Coupling Lambda probes on underbody

9 -	Starter cable under vehicle floor

10 -	Wiring harness in plenum chamber from engine control unit -J623-

11 -	Duct to dash panel left

12 -	Transition to dash panel left

13 -	Cable channel in left engine compartment

14 -	Electronics box engine compartment

15 -	Engine prewiring

16 -	Wiring harness engine compartment left to headlight

17 -	Front airbag crash sensor -G190-/front airbag crash sensor on driver side -G283-/front airbag crash sensor on front passenger side -G284-, only USA

18 -	Low tone horn -H7-

AUDI TT 2012 Overview of control units

Overview of control units

1 -	ABS control unit -J104-

q	Location and connector assignment → chapter

2 -	Engine control unit -J623-

q	Location and connector assignment → chapter

3 -	Climatronic control unit -J255-

q	Components:-E230-, -G56-, -V42-, -E94-, -E95-

q	Location and connector assignment → chapter

4 -	Control unit in dash panel insert -J285-

q	Components:-G1-, -Y24-, -K3-, -K32-, -Y8-, -J362-, -K28-

q	Location and connector assignment → chapter

5 -	Front passenger door control unit -J387-

q	Components:-V148-

q	Location and connector assignment → chapter

6 -	Anti-theft alarm sensor -G578-

q	Location and connector assignment → chapter

7 -	Electronically controlled damping control unit -J250-

q	Location and connector assignment → chapter

8 -	Front interior light -W1-

q	Components:-E457-, -E458-, -W13-, -W19-

q	Location and connector assignment → chapter

9 -	Steering column electronics control unit -J527-

q	Components:-D-, -N376-, -G85-, -E45-, -E2-, -E4-, -E22-, -F138-, -H-, -N95-, -N250-

q	Location and connector assignment → chapter

10 -	Convertible roof actuation control unit -J256- (Roadster)

q	Components -R86-, -R146-

q	Location and connector assignment → chapter

11 -	Control unit for parking aid -J446-

q	Components -R78-

q	Location and connector assignment → chapter

12 -	Convenience system central control unit -J393-

q	Location and connector assignment → chapter

q	is dropped from May 2009

13 -	Battery monitor control unit -J367-

q	Location and connector assignment → chapter

14 -	Digital sound package control unit -J525-

q	Components -R87-

q	Location → chapter

15 -	Radio controlled clock receiver -J489-

q	Location → chapter

16 -	Fuel pump control unit -J538-

q	Location and connector assignment → chapter

17 -	Driver door control unit -J386-

q	Components:-V147-

q	Location and connector assignment → chapter

18 -	onboard supply control unit -J519-

q	Location and connector assignment up to May 2009 → Chapter

q	Location and connector assignment from June 2009 → Chapter

19 -	Tyre pressure monitor control unit 2 -J793-

q	Location and connector assignment → chapter

20 -	Tyre pressure monitor control unit -J502-, USA

q	Location and connector assignment → chapter

21 -	Headlight range control, control unit -J431-

q	Location and connector assignment → chapter

22 -	Power steering control unit -J500-

q	Location and connector assignment → chapter

23 -	Wiper motor control unit -J400-

q	Location and connector assignment → chapter

24 -	Radiator fan control unit -J293-

q	Components -V7-, -V177-

q	Location and connector assignment → chapter

25 -	Data bus diagnostic interface -J533-

q	Location and connector assignment → chapter

26 -	Airbag control unit -J234-

q	Location and connector assignment → chapter

27 -	Left gas discharge bulb control unit -J343-/right gas discharge light control unit -J344-

q	Components -J667-, -J668-, -V294-, -V295-, -V48-, -V49-

q	Location and connector assignment → chapter

AUDI TT 2012 ABS control unit J104 ABS control unit -J104- Fitting location

in​ engine​ compartment​ on​ right​ at bulkhead​ -1-. Connector assigment

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A -	ABS control unit -J104-

B -	47-pin connector -T47-, black, on wiring harness

Back to overview → chapter. AUDI TT 2012 Engine control unit J623 Engine control unit -J623- Fitting location

in plenum chamber -1-. Connector assigment

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A -	Engine control unit -J623-

B -	94-pin connector -T94-, black, on wiring harness

C -	60-pin connector -T60-, black, on wiring harness

Connector assignment, 3.2 I V6

A -	Engine control unit -J623-

B -	81-pin connector -T81-, black, on wiring harness

C -	40-pin connector -T40-, black, on wiring harness

Back to overview → chapter. AUDI TT 2012 Control unit for parking aid J446 Control unit for parking aid -J446- Fitting location

on right in luggage compartment -3-. 1 -  TV tuner -R78- 2 -  Fuse holder on right in luggage compartment 3 -  Control unit for parking aid -J446- 4 -  Convenience system central control unit -J393-, up to May 2009 Connector assignment of parking aid control unit -J446-

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A -	16-pin connector -T16e-, brown

B -

Vacant

C -	12-pin connector -T12l-, black

Back to overview → chapter. AUDI TT 2012 Convenience system central control unit J393 , up to May 2009 Convenience system central control unit -J393-, up to May 2009 Fitting location

on right in luggage compartment -4-. 1 -  TV tuner -R78- 2 -  Fuse holder on right in luggage compartment 3 -  Control unit for parking aid -J446- 4 -  Convenience system central control unit -J393- Connector assignment of convenience system central control unit -J393-

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A -	Convenience system central control unit -J393-

B -

Vacant

C -	18-pin connector -T18g-, brown, on wiring harness

D -	8-pin connector -T8g-, black, on wiring harness

E -	6-pin, connector -T6g-, black, on wiring harness

F -	18-pin connector -T18f-, black, on wiring harness

Back to overview → chapter. AUDI TT 2012 Driver door control unit J386 Driver door control unit -J386- Fitting location

In driver door -1-. 1 -  Driver door control unit -J386- 2 -  Connectors:   Note Illustration shows the left side. Connector assigment

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A -	Driver door control unit -J386-

B -	32-pin connector -T32f-, grey, on wiring harness

C -	16-pin connector -T16f-, black, on wiring harness

D -	20-pin connector -T20f-, black, on wiring harness

Back to overview → chapter. AUDI TT 2012 Front passenger door control unit J387 Front passenger door control unit -J387- Fitting location

in front passenger door -1-. 1 -  Front passenger door control unit -J387- 2 -  Connectors:   Note Illustration shows the left side. Connector assigment

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A -	Front passenger door control unit -J387-

B -	32-pin connector -T32g-, grey, on wiring harness

C -	16-pin connector -T16g-, black, on wiring harness

D -	20-pin connector -T20g-, black, on wiring harness

Back to overview → chapter. AUDI TT 2012 Convertible roof actuation control unit J256 , Roadster Convertible roof actuation control unit -J256-, Roadster Fitting location

in insert, luggage compartment -6-. 1 -  Aerial amplifier for mobile telephone -R86-, not USA  -  Satellite radio -R146-, only USA 2 -  Breakdown set 3 -  Towline anchorage 4 -  Warning triangle 5 -  battery -A- 6 -  Convertible roof actuation control unit -J256-, only Roadster 7 -  Tools 8 -  Jack Connector assignment of convertible roof actuation control unit -J256-

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1 -	20-pin connector -T20v-, red

2 -	10-pin connector -T10v-, black

Back to overview → chapter. AUDI TT 2012 Digital sound package control unit J525 Digital sound package control unit -J525- Fitting location

on left in luggage compartment -1-. 1 -  Digital sound package control unit -J525- 2 -  Satellite radio -R146-, only USA  -  Aerial amplifier for mobile telephone -R86-, not USA  -  Aerial filter -R87-, only USA, up to October 2006 Back to overview → chapter. AUDI TT 2012 Electronically controlled damping control unit J250 Electronically controlled damping control unit -J250- Fitting location

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under front passenger seat -5-. 1 -  10-pin connector -T10i-, black 2 -  3-pin connector -T3d-, yellow 3 -  6-pin, connector -T6e-, green 4 -  10-pin connector -T10g-, red 5 -  Electronically controlled damping control unit -J250- Connector assignment of electronically controlled damping control unit -J250-

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A -	47-pin connector -T47-, black

Back to overview → chapter. AUDI TT 2012 Steering column electronics control unit J527 Steering column electronics control unit -J527- Fitting location On steering column, at steering column switch. Connector assigment

A -

Vacant

B -	10-pin connector -T10ab-

C -	20-pin connector -T20c-, black, on wiring harness

D -	4-pin connector -T4d-, yellow, on wiring harness

E -	12-pin connector -T12i-

F -	8-pin connector -T8f-

G -	10-pin connector -T10ag-

H -	10-pin connector -T10ah-

Back to overview → chapter. AUDI TT 2012 onboard supply control unit J519 , up to May 2009 onboard supply control unit -J519-, up to May 2009 Fitting location

behind​ the​ shelf​ on​ the​ driver's​ side,​ on left​ next​ to​ steering column -2-. 1 -  Relay carrier behind left of dash panel 2 -  onboard supply control unit -J519- Connector assignment onboard supply control unit -J519-

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A -	11-pin connector -T11b-, black

B -	12-pin connector -T12c-, black

C -	12-pin connector -T12d-, brown

D -	11-pin connector -T11c-, brown

E -	16-pin connector -T16a-, black

F -	8-pin connector -T8h-, black

G -	12-pin connector -T12e-, black

H -

Vacant

I -

Vacant

J -	6-pin, connector -T6h-, black

K -	10-pin connector -T10d-, black

L -	2-pin connector -T2t-, black

Back to overview → chapter. AUDI TT 2012 onboard supply control unit J519 , from June 2009 onboard supply control unit -J519-, from June 2009 Location left-hand drive

behind shelf on front passenger side -3-. 1 -  fuse holder C 2 -  Relay carrier behind dash panel 3 -  onboard supply control unit -J519- 4 -  Relay carrier on onboard supply control unit -J519- Location right-hand drive

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behind shelf on front passenger side -3- 1 -  Relay carrier behind dash panel 2 -  fuse holder C 3 -  onboard supply control unit -J519- 4 -  Relay carrier on onboard supply control unit -J519- Connector assignment onboard supply control unit -J519-

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1 -	52-pin connector -T52a-, black

2 -	52-pin connector -T52b-, yellow

3 -	52-pin connector -T52c-, brown

Back to overview → chapter. AUDI TT 2012 Control unit in dash panel insert J285 Control unit in dash panel insert -J285- Fitting location

In dash panel insert -2-. 1 -  onboard supply control unit -J519- 1 -  Relay carrier behind dash panel 2 -  Control unit in dash panel insert -J285- 3 -  Tyre pressure monitor control unit 2 -J793- 4 -  Headlight range control, control unit -J431- 5 -  Data bus diagnostic interface -J533- Connector assignment of control unit in dash panel insert -J285-

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1 -	32-pin connector -T32-, blue

Back to overview → chapter. AUDI TT 2012 Data bus diagnostic interface J533 Data bus diagnostic interface -J533- Fitting location

Behind​ the​ shelf​ on​ the​ driver's​ side​, at bottom​ next​ to​ steering​ column -1-. Connector assigment

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1 -	20-pin connector -T20d-, black

Back to overview → chapter. AUDI TT 2012 Headlight range control, control unit J431 Headlight range control, control unit -J431- Fitting location

Behind​ the​ shelf​ on​ the​ driver's​ side​, on right​ next​ to​ steering​ column -1-. Connector assigment

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A -	Headlight range control, control unit -J431-

B -	26-pin connector -T26a-, black, on wiring harness

Back to overview → chapter. AUDI TT 2012 Airbag control unit J234 Airbag control unit -J234- Fitting location

Under centre console -2-. 1 -  75-pin connector -T75- 2 -  Airbag control unit -J234- Connector assignment of airbag control unit -J234-

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A -	75-pin connector -T75-, yellow

Back to overview → chapter. AUDI TT 2012 Fuel pump control unit J538 Fuel pump control unit -J538- Fitting location At lower right on fuel tank.

A -	Fuel pump control unit -J538-

Connector assigment

A -	Fuel pump control unit -J538-

B -	10-pin connector -T10k-, black, on wiring harness

Back to overview → chapter. AUDI TT 2012 Tyre pressure monitor control unit 2 J793 Tyre pressure monitor control unit 2 -J793- Fitting location

Behind the instrument cluster -1-. Connector assigment

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1 -	18-pin connector -T18c-, black

Back to overview → chapter. AUDI TT 2012 Climatronic control unit J255 Climatronic control unit -J255- Fitting location

In front centre console -1-. Connector assigment

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1 -	16-pin connector -T16d-, black

2 -	20-pin connector -T20k-

3 -	12-pin connector -T12k-

4 -	16-pin connector -T16c-, brown

5 -	3-pin connector -T3ae-, black

Back to overview → chapter. AUDI TT 2012 Wiper motor control unit J400 Wiper motor control unit -J400- Fitting location in driver side plenum chamber.

3 -	Wiper motor control unit -J400-

5 -	4-pin connector -T4-, black

Back to overview → chapter. AUDI TT 2012 Radiator fan control unit J293 Radiator fan control unit -J293- Fitting location at front of radiator.

1 -	4-pin connector -T4c-, black

2 -	4-pin connector -T4c-, black

3 -	Radiator fan control unit -J293-

Radiator fan -V7-

4 -	Radiator fan 2 -V177-

Back to overview → chapter. AUDI TT 2012 Power steering control unit J500 Power steering control unit -J500- Fitting location on steering box.

A -	Power steering control unit -J500-

B -	2-pin connector -T2s-, black

Back to overview → chapter. AUDI TT 2012 Radio controlled clock receiver J489 Radio controlled clock receiver -J489- Fitting location

behind the rear left bumper. 1 -  Radio controlled clock receiver -J489- Back to overview → chapter. AUDI TT 2012 Battery monitor control unit J367 Battery monitor control unit -J367- Fitting location

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On the battery -A-. 1 -  battery -A- 2 -  Battery monitor control unit -J367- 2 -  2-pin connector -T2au-, yellow Back to overview → chapter. AUDI TT 2012 Tyre pressure monitor control unit J502 , USA Tyre pressure monitor control unit -J502-, USA Fitting location behind instrument cluster.

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1 -	Tyre pressure monitor control unit -J502-

A -	18-pin connector -T18c-, black

Connector assignment of tyre pressure monitor control unit -J502-

- T18c -	Designation		- T18c -	Designation
1			10
2			11
3	Terminal 30		12
4			13
5	Convenience CAN bus high		14
6	Convenience CAN bus low		15
7			16	Tyre pressure monitor button -E226-, in operating unit in front of centre console -E461-
8			17
9	Terminal 31		18

Back to overview → chapter. AUDI TT 2012 Left gas discharge bulb control unit J343 / right gas discharge light control unit J344 Left gas discharge bulb control unit -J343-/right gas discharge light control unit -J344- Fitting location At headlight.

1 -	Bi-Xenon gas discharge headlights with cornering light, left and right

q	Output module for left headlight -J667-Output module for right headlight -J668-, in headlight housing

2 -	Left gas discharge bulb control unit -J343-/right gas discharge light control unit -J344-

3 -	14-pin connector -T14a-/14-pin connector -T14b-, black

Back to overview → chapter. AUDI TT 2012 Anti-theft alarm sensor G578 Anti-theft alarm sensor -G578- Fitting location in the front interior light -W1-.

1 -	Front interior light -W1- with anti-theft alarm sensor -G578-

A -	4-pin connector -T4p-

Connector assignment of anti-theft alarm sensor -G578-

- T4p - (A)	Designation		- T4p - (A)	Designation
1			3	onboard supply control unit -J519-
2	Terminal 31		4	Terminal 30

Back to overview → chapter. AUDI TT 2012 Front interior light W1 Front interior light -W1- Fitting location in front roof cross member.

1 -	Front interior light -W1-

q	with front passenger side reading light -W13-, Driver side reading lamp -W19-, Driver side reading lamp button -E457-, Front passenger side reading lamp button -E458-

A -	6-pin, connector -T6m-, brown

Connector assignment of front interior light -W1-

- T6m - (A)	Designation		- T6m - (A)	Designation
1	Terminal 31		4	onboard supply control unit -J519-, terminal 30a
2	onboard supply control unit -J519-		5	Terminal 58s
3	Automatic anti-dazzle interior mirror -Y7-		6	Terminal 30

Back to overview → chapter.

AUDI TT 2012 Overview of convertible roof components

Overview of convertible roof components

1 -	Front latch switch for convertible roof -F172-

q	Location → chapter

2 -	Convertible roof latch closed switch -F295-, left

q	Location → chapter

3 -	Convertible roof lock motor -V223-/Convertible roof latch open switch -F294-

q	Location convertible roof lock motor -V223- → Chapter

q	Location convertible roof latch open switch -F294- → Chapter

4 -	Cabrio windbreak switch -E278-

q	Location → chapter

5 -	Convertible roof latch closed switch -F295-, right

q	Location → chapter

6 -	Right latch switch for convertible roof -F170-

q	Location → chapter

7 -	Right convertible top cover motor -V381-/right sender for convertible roof cover -G597-

q	Location → chapter

8 -	Cabrio windbreak motor -V186-

q	Location → chapter

9 -	Convertible roof actuation hydraulic pump -V118-

q	Location → chapter

10 -	Convertible roof actuation switch -E137-

q	Location → chapter

11 -	Convertible roof stowed switch -F171-

q	Location → chapter

12 -	Convertible roof front switch -F202-

q	Location → chapter

13 -	Left convertible top cover motor -V383-/left sender for convertible roof cover -G596-

q	Location → chapter

Convertible roof actuation switch -E137- Fitting location

in centre console -1-. Back to overview → chapter. Cabrio windbreak switch -E278- Fitting location

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in centre console -1-. Back to overview → chapter. Convertible roof actuation hydraulic pump -V118- Fitting location

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In front left of luggage compartment -1-. Back to overview → chapter. Cabrio windbreak motor -V186- Fitting location

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On windbreak at centre of luggage compartment wall -1-. Back to overview → chapter. Convertible roof lock motor -V223- Fitting location

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On convertible roof linkage at front centre -1-. Back to overview → chapter. Front latch switch for convertible roof -F172- Fitting location

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On left roof cross member behind the sun visor -1-. Back to overview → chapter. Right latch switch for convertible roof -F170- Fitting location

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On right roof cross member behind the sun visor -1-. Back to overview → chapter. Convertible roof latch closed switch -F295-, left Fitting location

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On convertible roof linkage at front left -1-. Back to overview → chapter. Convertible roof latch closed switch -F295-, right Fitting location

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On convertible roof linkage at front right -1-. Back to overview → chapter. Convertible roof stowed switch -F171- Fitting location

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On convertible roof mechanism at lower left behind the side trim panel -1-. Back to overview → chapter. Convertible roof front switch -F202- Fitting location

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On convertible roof mechanism at left behind the side trim panel -1-. Back to overview → chapter. Right convertible top cover motor -V381-/right sender for convertible roof cover -G597- Fitting location

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Under the right convertible top cover -1-. Back to overview → chapter. Left convertible top cover motor -V383-/left sender for convertible roof cover -G596- Fitting location

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Under the left convertible top cover -1-. Back to overview → chapter. Convertible roof latch open switch -F294- Fitting location On right roof cross member behind the sun visor -1-.

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1 -	Convertible roof latch open switch -F294-

2 -	Contact for convertible roof latch open switch -F294-

3 -	Cable to 4-pin connector -T4w-

Back to overview → chapter.

AUDI TT 2012 Overview of relay carriers

Overview of relay carriers

1 -	Relay carrier behind dash panel

q	Components:-J17-, -J360-, -J531-, -J682-, -J789-, -J807-

q	Location and position of relays, left-hand drive → chapter

q	Location and position of relays, right-hand drive → chapter

2 -	Relay carrier on onboard supply control unit -J519-

q	Components:-J9-, -J39-, -J413-, -J576-, -J681-, -J689-

q	Relay positions up to May 2009 → chapter

q	Location and position of relays from June 2009 → chapter

3 -	Relay carrier in electronics box, engine compartment

q	Components:-J17-, -J49-, -J179-, -J151-, -J299-, -J271-, -J317-, -J359-, -J496-, -J757-, -J832-, -S125-, -J39-

q	Location and position of relays → chapter

AUDI TT 2012 Relay carrier behind left of dash panel, left-hand drive Relay carrier behind left of dash panel, left-hand drive Fitting location

On left behind dash panel -2-. 1 -  fuse holder C 2 -  Relay carrier behind left of dash panel 3 -  onboard supply control unit -J519- 4 -  Relay carrier on onboard supply control unit -J519-, from June 2009 Relay assignment

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1 -

Vacant

2.1 -

Fuel pump relay -J17-

q

TDI

2.1 -

Control relay -J789-

q	For engine code CEPA, CEPB, CRRA

2.2 -

Relay for power sockets -J807-

q	from June 2007

3 -

Vacant

q	up to August 2008

3 -	High heat output relay -J360-

q	from September 2008

3 -	Fuel pump relay -J17-

q	For engine code CEPA, CEPB, CRRA

4 -	Terminal 50 voltage supply relay -J682-

5 -	Cabrio windbreak control unit -J531-, windbreak relay

Back to overview → chapter. AUDI TT 2012 Relay carrier behind right of dash panel, right-hand drive Relay carrier behind right of dash panel, right-hand drive Fitting location

On right behind dash panel -1-. 1 -  Relay carrier behind right of dash panel 2 -  fuse holder C 3 -  onboard supply control unit -J519- 4 -  Relay carrier on onboard supply control unit -J519-, from June 2009 Relay assignment

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1 -

Vacant

2.1 -

Fuel pump relay -J17-

q

TDI

2.1 -

Control relay -J789-

q	For engine code CEPA, CEPB, CRRA

2.2 -

Relay for power sockets -J807-

q	from June 2007

3 -

Vacant

q	up to August 2008

3 -	High heat output relay -J360-

q	from September 2008

3 -	Fuel pump relay -J17-

q	For engine code CEPA, CEPB, CRRA

4 -	Terminal 50 voltage supply relay -J682-

5 -	Cabrio windbreak control unit -J531-, windbreak relay

Back to overview → chapter. AUDI TT 2012 Relay carrier in electronics box, engine compartment Relay carrier in electronics box, engine compartment Fitting location

In electronics box, engine compartment -1-. Relay assignment

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1 -	Secondary air pump relay -J299-

1 -	Low heat output relay -J359-

q	PDC heater (TDI)

q

Slot 3

2 -	Fuel pump relay -J17-

2 -	Relay for supplementary fuel pump -J832-

q

TDI

q

Slot 2.1

3 -	Continued coolant circulation relay -J151-

3 -	Auxiliary coolant pump relay -J496-

q	For engine code CEPA, CEPB, CRRA

q

Slot 2.2

4 -	Electric fuel pump 2 relay -J49-

q	for engine code BUB, CBRA

4 -	Engine component current supply relay -J757-

q	For engine code BWA, CDMA, CDAA, CCZA, CCTA, CEPA, CEPB, CESA, CETA, CRRA

4 -	Automatic glow period control unit -J179-

q

TDI

q

Slot 5

5 -	Motronic current supply relay -J271-

5 -	Terminal 30 voltage supply relay -J317-

q

TDI

q

Slot 4

6 -	Headlight washer system relay -J39-

q	Plug position 1, up to May 2009

7 -	Glow plug fuse -S125-, 50 A

q	Plug position A

8 -

Vacant

9 -

Vacant

Back to overview → chapter. AUDI TT 2012 Position of relays on onboard supply control unit J519 , up to May 2009 Position of relays on onboard supply control unit -J519-, up to May 2009 Fitting location Left-hand drive: at left behind dash panel. Right-hand drive: at right behind dash panel.

1 -	Terminal 15 voltage supply relay 2 -J681-

q

Slot B1

2 -

Vacant

q

Slot B2

3 -	Heated rear window relay -J9-

q

Slot B5

4 -	Horn relay -J413-

q

Slot B6

5 -

Vacant

q

Slot B9

6 -	Washer pump relay -J576-

q

Slot B8

7 -

Vacant

q

Slot B7

8 -

Vacant

q

Slot B3

9 -	Terminal 30 voltage supply relay 2 -J689-

q

Slot B4

Back to overview → chapter. AUDI TT 2012 Relay carrier on onboard supply control unit J519 , from June 2009 Relay carrier on onboard supply control unit -J519-, from June 2009 Fitting location

Left-hand drive: at left of dash panel -4-. 1 -  fuse holder C 2 -  Relay carrier behind left of dash panel 3 -  onboard supply control unit -J519- 4 -  Relay carrier on onboard supply control unit -J519-, from June 2009

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Right-hand drive: at right behind dash panel -4-. 1 -  Relay carrier behind dash panel 2 -  fuse holder C 3 -  onboard supply control unit -J519- 4 -  Relay carrier on onboard supply control unit -J519-, from June 2009 Relay assignment

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1 -	Terminal 15 voltage supply relay 2 -J681-

2 -	Heated rear window relay -J9-

3.1 -

Horn relay -J413-

3.2 -

Headlight washer system relay -J39-

4 -

Vacant

5 -

Vacant

Back to overview → chapter.

AUDI TT 2012 Overview of fuses

Overview of fuses

1 -	Fuses on relay carrier behind dash panel

q	Location and position of fuses → chapter

2 -	Main fuse carrier on the battery -A-, fuses (SD)

q	Location and position of fuses → chapter

3 -	Fuses (SF) on fuse holder F

q	Location and position of fuses → chapter

4 -	Fuses (SC) on fuse holder C

q	Location and position of fuses → chapter

5 -	Slave start socket -U6-

q	Location → chapter

6 -	Fuses (SB) on fuse holder B

q	Location and position of fuses → chapter

7 -	Fuses (SA) on fuse holder A

q	Location and position of fuses → chapter

AUDI TT 2012 Fuses (SA) on fuse holder A Fuses (SA) on fuse holder A

On electronics box, engine compartment -1-. Fuse colours 40 A -  orange 30 A -  green 25 A -  white 20 A -  yellow 15 A -  blue 10 A -  red 7,5 A -  brown 5 A -  beige

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A -	Screw​ connection​ terminal​ 30​ (C)​ of main fuse carrier on the battery -A-

SA -	Fuses on fuse holder A

q	Position of fuses → chapter

Back to overview → chapter.

Position of fuses on fuse holder A

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1	-	Fuse 1 on fuse holder A -SA1-	175 A	-	Alternator -C-	30
2	-	Fuse 2 on fuse holder A -SA2-	80 A	-	Power steering control unit -J500-	30
3	-	Fuse 3 on fuse holder A -SA3-	60 A	-	Radiator fan control unit -J293- Radiator fan -V7-	30
4	-	Fuse 4 on fuse holder A -SA4-	110 A	-	Supply for fuse carrier in electronics box engine compartment	30
5	-	Fuse 5 on fuse holder A -SA5-	40 A	-	Secondary air pump motor -V101- Auxiliary air heater heater element -Z35/1-1) Fuel pump relay -J17-2)	30
6	-	Fuse 6 on fuse holder A -SA6-	80 A	-	Auxiliary air heater heater element -Z35/2-1) Auxiliary heater element -Z35/3-1)	30
7	-	Vacant
8	-	Vacant

Note t  1) engine codes CBBB, CFGB only t  2) engine codes CEPA, CEPB, CRRA only Back to overview → chapter. AUDI TT 2012 Fuses (SB) on fuse holder B Fuses (SB) on fuse holder B

In electronics box, on left in engine compartment -1-. Fuse colours 40 A -  orange 30 A -  green 25 A -  white 20 A -  yellow 15 A -  blue 10 A -  red 7,5 A -  brown 5 A -  beige

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1 -	Fuse carrier ST1, black

q	Position of fuses → chapter

2 -	Fuse carrier ST2, brown

q	Position of fuses → chapter

3 -

Vacant

4 -

Vacant

Back to overview → chapter.

Position of fuses on fuse carrier ST1, black

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1	-	Vacant
2	-	Vacant
3	-	Vacant
4	-	Vacant
5	-	Fuse 5 on fuse holder B -SB5-	5 A	-	Alarm horn -H12- Anti-theft alarm sensor -G578-	30
6	-	Fuse 6 on fuse holder B -SB6-	30 A	-	Headlight washer system pump -V11-	30
7	-	Fuse 7 on fuse holder B -SB7-	15 A 20 A1) 6) 10 A5) 7)		Fuel pressure regulating valve -N276-1)2) Fuel system pressurisation pump -G6-4) Control relay -J789-5) 3) Supplementary fuel pump -V393- Engine component current supply relay -J757-6)	30
8	-	Fuse 8 on fuse holder B -SB8-	30 A	-	Wiper motor control unit -J400-	30
9	-	Fuse 9 on fuse holder B -SB9-	25 A	-	Heated seat cushion for front left seat -Z45- Heated seat cushion for front right seat -Z46-	30
10	-	Fuse 10 on fuse holder B -SB10-	10 A	-	Driver seat lumbar support longitudinal adjustment motor -V125- Front passenger seat lumbar support longitudinal adjustment motor -V126-	30
11	-	Vacant
12	-	Fuse 12 on fuse holder B -SB12-	40 A	-	Fresh air blower control unit -J126- fresh air blower -V2-	30

Note t  1) engine codes CDAA, CCZA, CCTA only t  2) engine codes BWA, BPY, CDMA, CDLB, CDLA only t  3) engine codes CBBB, CFGB only t  4) engine codes BUB, CBRA only t  5) engine codes CEPA, CEPB, CRRA only t  6) engine codes CESA, CETA only t  7) from June 2011, only 2.0 l diesel engine and 2.0 l petrol engine Back to overview → chapter.

Position of fuses on fuse carrier ST2, brown

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1	-	Fuse 1 on fuse holder B -SB1-	15 A	-	Fuel system pressurisation pump -G6-4) Exhaust flap 1 valve -N321-5)	87
2	-	Fuse 2 on fuse holder B -SB2-	10 A 30 A5)	-	Lambda probe -G39-4) Lambda probe after catalytic converter -G130-4) Fuel pump control unit -J538-5)	87
3	-	Fuse 3 on fuse holder B -SB3-	5 A	-	Air mass meter -G70-4)	87
4	-	Fuse 4 on fuse holder B -SB4-	10 A	-	Lambda probe 2 -G108-4) Lambda probe 2 after catalytic converter -G131-4)	87
5	-	Fuse 5 on fuse holder B -SB5-	5 A 10 A5)	-	Engine component current supply relay -J757-2) Automatic glow period control unit -J179-3) Supplementary fuel pump relay -J832-3) Fuel pump relay -J17-3) Lambda probe -G39-5)	87
6	-	Fuse 6 on fuse holder B -SB6-	10 A	-	Fuel system diagnostic pump -V144-4) Secondary air pump relay -J299-4) Lambda probe -G39-1) 2) 3) 6) Lambda probe after catalytic converter -G130-1) 2) 5) 6) Secondary air inlet valve -N112-4) Secondary air inlet valve 2 -N320-4)	87
7	-	Fuse 7 on fuse holder B -SB7-	10 A	-	Wastegate solenoid valve -N75-3) Activated charcoal filter system solenoid valve 1 -N80-4) Variable intake manifold change-over valve -N156-4) Camshaft control valve 1 -N205-4) Exhaust camshaft control valve 1 -N318-4) Exhaust gas recirculation cooler changeover valve -N345-3) Radiator fan control unit -J293-1) 3) 4) 5) 6) Fuel system diagnostic pump -V144-1) 6) Intake manifold flap valve -N316-6)	87
8	-	Fuse 8 on fuse holder B -SB8-	20 A 1) 2) 5) 6) 30 A4) 5 A3)	-	Ignition coils -N...-1) 2) 4) 5) 6) Low heat output relay -J359-3) High heat output relay -J360-3)	87
9	-	Fuse 9 on fuse holder B -SB9-	15 A 1) 6) 25 A2) 30 A3) 25 A4) 5)	-	Engine control unit -J623-	87
10	-	Fuse 10 on fuse holder B -SB10-	10 A	-	Continued coolant circulation pump -V51-1)2)4)5) Continued coolant circulation relay -J151-1) 2) 4) 6) Exhaust gas recirculation cooler pump -V400-3) Coolant circulation solenoid valve -N492-5) Additional coolant pump relay -J496-5)	87
11	-	Fuse 11 on fuse holder B -SB11-	5 A	-	Clutch position sender -G476-	87
12	-	Fuse 12 on fuse holder B -SB12-	10 A 20 A3)	-	Engine component current supply relay -J757-1) 6) Activated charcoal filter system solenoid valve 1 -N80-1 )2) 6) Charge pressure control solenoid valve -N75-1) 2) 6) Camshaft control valve 1 -N205-1) 6) Turbocharger air recirculation valve -N249-1) 2) 6) Fuel pressure regulating valve -N276-3) Fuel metering valve -N290-3) Intake manifold flap valve -N316-1) Oil pressure control valve -N428-1) 6) Secondary air inlet valve -N112-6) Actuator 1 for camshaft adjustment -F366-6)	87

Note t  1) engine codes CDAA, CCZA, CCTA only t  2) engine codes BWA, BPY, CDMA, CDLA, CDLB only t  3) engine codes CBBB, CFGB only t  4) engine codes BUB, CBRA only t  5) engine codes CEPA, CEPB, CRRA only t  6) engine codes CESA, CETA only Back to overview → chapter. AUDI TT 2012 Fuses (SC) on fuse holder C Fuses (SC) on fuse holder C

Left-hand drive: at left of dash panel -1- 1 -  fuse holder C 2 -  Relay carrier behind dash panel 3 -  onboard supply control unit -J519- 4 -  Relay carrier on onboard supply control unit -J519-, from June 2009

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Right-hand drive: at right of dash panel -2-. 1 -  Relay carrier behind dash panel 2 -  fuse holder C 3 -  onboard supply control unit -J519- 4 -  Relay carrier on onboard supply control unit -J519-, from June 2009 Fuse colours 40 A -  orange 30 A -  green 25 A -  white 20 A -  yellow 15 A -  blue 10 A -  red 7,5 A -  brown 5 A -  beige

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Fuse locations

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No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1	-	Fuse 1 on fuse holder C -SC1-	10 A	-	Fuel pump relay -J17- Electric fuel pump 2 relay -J49-1) Fuel pump control unit -J538- Engine control unit -J623- Front passenger front airbag deactivated warning lamp -K145- Light switch illumination bulb -L9- 16-pin connector, diagnostic connector -T16-	15
2	-	Fuse 2 on fuse holder C -SC2-	5 A	-	ABS control unit -J104- Brake light switch -F-	15
3	-	Fuse 3 on fuse holder C -SC3-	5 A	-	Output module for left headlight -J667-	15
4	-	Fuse 4 on fuse holder C -SC4-	5 A	-	Oil level and oil temperature sender -G266- Tyre pressure monitor button -E226- Tyre pressure monitor control unit 2 -J793- TCS and ESP button -E256- Headlight range control, control unit -J431- High-pressure sender -G65- Reversing light switch -F4-	15
5	-	Fuse 5 on fuse holder C -SC5-	10 A5) 5 A6)	-	Right headlight range control motor -V49-5) Left headlight range control motor -V48-5) Headlight range control adjuster -E102-5) Control unit for headlight range control -J431-6) Power output module for right headlight -J668-6)	15
6	-	Fuse 6 on fuse holder C -SC6-	5 A	-	Power steering control unit -J500- Data bus diagnostic interface -J533- Selector lever sensors control unit -J587- Mechatronic unit for dual clutch gearbox -J743-	15
7	-	Fuse 7 on fuse holder C -SC7-	5 A	-	Control unit for parking aid -J446- Automatic anti-dazzle interior mirror -Y7- Garage door operating unit -E284- Garage door operation control unit -J530- Left washer jet heater element -Z20- Right washer jet heater element -Z21- onboard supply control unit -J519- Washer pump relay -J576- Cabrio windbreak control unit -J531-	15
8	-	Fuse 8 on fuse holder C -SC8-	5 A 10 A2)	-	All-wheel drive control unit -J492-	15
9	-	Fuse 9 on fuse holder C -SC9-	5 A	-	Electronically controlled damping control unit -J250-	15
10	-	Fuse 10 on fuse holder C -SC10-	5 A	-	Airbag control unit -J234- Seat occupied recognition control unit -J706-7)	15
11	-	Fuse 11 on fuse holder C -SC11-	10 A1)4) 5 A3)	-	Air mass meter -G70-3) 4) Structure-borne noise control unit -J869-4) Crankcase breather heater element -N79-1) 4)	15
12	-	Fuse 12 on fuse holder C -SC12-	10 A	-	Driver door control unit -J386- Front passenger door control unit -J387-	30
13	-	Fuse 13 on fuse holder C -SC13-	10 A	-	16-pin connector -T16-, diagnostic connector	30
14	-	Fuse 14 on fuse holder C -SC14-	5 A 15 A15)	-	Light/rain sensor -G397-12) Selector lever sensors control unit -J587-14) Mechatronic unit for dual clutch gearbox -J743-15)	30
15	-	Fuse 15 on fuse holder C -SC15-	5 A 15 A13)	-	onboard supply control unit -J519- Front interior light -W1- Light/rain sensor -G397-13)	30
16	-	Fuse 16 on fuse holder C -SC16-	10 A	-	Climatronic control unit -J255-	30
17	-	Fuse 17 on fuse holder C -SC17-	5 A	-	Tyre pressure monitor control unit -J502-7) Tyre pressure monitor control unit 2 -J793- Selector lever sensors control unit -J587-15)	30
18	-	Vacant
19	-	Vacant
20	-	Vacant
21	-	Fuse 21 on fuse holder C -SC21-	10 A	-	Injectors -N....-1)	15
22	-	Fuse 22 on fuse holder C -SC22-	30 A	-	Cabrio windbreak control unit -J531-9)	30
23	-	Fuse 23 on fuse holder C -SC23-	20 A	-	High tone horn -H2- Low tone horn -H7-	30
24	-	Fuse 24 on fuse holder C -SC24-	15 A 30 A15)	-	Mechatronic unit for dual clutch gearbox -J743-	30
25	-	Fuse 25 on fuse holder C -SC25-	30 A 20 A9)	-	Heated rear window -Z1-	30
26	-	Fuse 26 on fuse holder C -SC26-	30 A	-	Driver side window regulator motor -V147-	30
27	-	Fuse 27 on fuse holder C -SC27-	30 A	-	Front passenger side window regulator motor -V148-	30
28	-	Vacant
29	-	Fuse 29 on fuse holder C -SC29-	15 A	-	Washer pump -V5-	15
30	-	Fuse 30 on fuse holder C -SC30-	20 A	-	Cigarette lighter -U1-10) 12-V plug socket -U5-7) 10)	15
31		Fuse 31 on fuse holder C -SC31-	40 A	-	Starter -B- Terminal 50 voltage supply relay -J682-	15
32		Fuse 32 on fuse holder C -SC32-	5 A	-	Steering column electronics control unit -J527-	30
33		Fuse 33 on fuse holder C -SC33-	5 A	-	Control unit in dash panel insert -J285-	30
34		Fuse 34 on fuse holder C -SC34-	15 A 20 A8)	-	Navigation system with CD drive control unit -J401- Radio -R- Control unit with display for radio and navigation -J503-	30
35		Fuse 35 on fuse holder C -SC35-	30 A	-	Digital sound package control unit -J525-	30
36		Fuse 36 on fuse holder C -SC36-	10 A	-	Engine control unit -J623- Motronic current supply relay -J271- Terminal 30 voltage supply relay -J317-4) Fuel pump relay -J17-16)	30
37	-	Fuse 37 on fuse holder C -SC37-	5 A	-	Data bus diagnostic interface -J533-	30
38	-	Fuse 38 on fuse holder C -SC38-	20 A	-	Relay for power sockets -J807-11) Cigarette lighter -U1-11) 12-V plug socket -U5-7) 11)	30
39	-	Vacant
40	-	Vacant
41	-	Vacant
42	-	Vacant
43	-	Vacant
44	-	Vacant
45	-	Vacant
46	-	Vacant
47	-	Fuse 47 on fuse holder C -SC47-	5 A	-	Satellite radio -R146-7) Telephone transmitter and receiver unit -R36- Aerial amplifier for mobile telephone -R86-	30
			7.5 A	-	TV tuner -R78- Preparation for mobile telephone	30
48	-	Fuse 48 on fuse holder C -SC48-	5 A	-	Preparation for mobile telephone	15
49	-	Vacant

t	1) engine codes BUB, CBRA only

t	2) engine codes CDLB, CDLA only

t	3) engine codes BWA, BPY, CDMA, CDLA, CDLB only

t	4) engine codes CBBB, CFGB

t	5) for manual headlight range control

t	6) for automatic headlight range control

t	7) for models with US equipment only

t	8) for models with Japan equipment only

t	9) Roadster

t	10) up to May 2007

t	11) from June 2007

t	12) up to May 2009

t	13) from June 2009

t	14) for models with DQ500 7-speed dual clutch gearbox OBH (S tronic) only

t	15) for models with DQ200 7-speed dual clutch gearbox OAM (S tronic) only

t	16) engine codes CEPA, CEPB, CRRA only

Back to overview → chapter. AUDI TT 2012 Fuses (SF) on fuse holder F Fuses (SF) on fuse holder F

In luggage compartment, rear right -1-. Fuse colours 40 A -  orange 30 A -  green 25 A -  white 20 A -  yellow 15 A -  blue 10 A -  red 7,5 A -  brown 5 A -  beige

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A -

Vacant

B -

Vacant

C -

Vacant

1 -	Fuse holder F

q	Position of fuses → chapter

Back to overview → chapter.

Fuse assignment on fuse holder F

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1	-	Fuse 1 on fuse holder F -SF1-	5 A	-	onboard supply control unit -J519-, reference voltage	30
2	-	Fuse 2 on fuse holder F -SF2-	40 A	-	onboard supply control unit -J519-	30
3	-	Vacant
4	-	Fuse 4 on fuse holder F -SF4-	30 A	-	Convertible roof actuation control unit -J256-1) Convertible roof actuation hydraulic pump -V118-1)	30
5	-	Fuse 5 on fuse holder F -SF5-	5 A	-	Control unit for parking aid -J446- Interface for special functions 2)	30
6	-	Fuse 6 on fuse holder F -SF6-	15 A	-	Fuel pump control unit -J538-3)4) Fuel system pressurisation pump -G6-5)	30
7	-	Fuse 7 on fuse holder F -SF7-	40 A	-	onboard supply control unit -J519-	30
8	-	Fuse 8 on fuse holder F -SF8-	20 A	-	ABS control unit -J104-, ABS valves	30
9	-	Fuse 9 on fuse holder F -SF9-	30 A	-	Electronically controlled damping control unit -J250-	30
10	-	Fuse 10 on fuse holder F -SF10-	20 A 6) 10 A 7)	-	Convenience system central control unit -J393-6) Onboard supply control unit -J519-7)	30
11	-	Fuse 11 on fuse holder F -SF11-	25 A	-	Convertible roof actuation control unit -J256-1)	30
12	-	Fuse 12 on fuse holder F -SF12-	5 A6)	-	Convenience system central control unit -J393-6)	30

Note t  1) Roadster t  2) from June 2007 t  3) engine codes CDAA, CCZA, CCTA only t  4) engine codes BWA, BPY, CDMA, CDLA, CDLB only t  5) engine codes CBBB, CFGB only t  6) up to May 2009 t  7) from June 2009 Back to overview → chapter. AUDI TT 2012 Fuses (SD) on main fuse carrier Fuses (SD) on main fuse carrier

In luggage compartment, on the battery -A--1- .

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A -	Connection battery positive

B -	Battery isolation igniter -N253-

C -	Wire to fuse holder A

C -	Cable to starter -B-

1 -	Fuse 1 on fuse holder D -SD1-, 40 A, to ABS hydraulic pump -V64-

2 -	Fuse 2 on fuse holder D -SD2-, 110 A, to fuse holder F

3 -	Fuse 3 on fuse holder D -SD3-, 110 A, to fuse holder C

Back to overview → chapter. AUDI TT 2012 Fuses on relay carrier behind dash panel Fuses on relay carrier behind dash panel

Left-hand drive: at left of dash panel -2-. 1 -  fuse holder C 2 -  Relay carrier behind left of dash panel 3 -  onboard supply control unit -J519- 4 -  Relay carrier on onboard supply control unit -J519-, from June 2009 Position of fuses, left-hand drive

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A -

Vacant

B -

Vacant

C -	Driver seat adjustment thermal fuse 1 -S44-, 20 A

D -

Vacant

Right-hand drive: at right behind dash panel -1-. 1 -  Relay carrier behind right of dash panel 2 -  fuse holder C 3 -  onboard supply control unit -J519- 4 -  Relay carrier on onboard supply control unit -J519- from June 2009 Position of fuses, right-hand drive

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A -

Vacant

B -

Vacant

C -	Driver seat adjustment thermal fuse 1 -S44-, 20 A

D -

Vacant

Back to overview → chapter. AUDI TT 2012 Slave start socket U6 Slave start socket -U6- Location: in rear left of engine compartment.

1 -	Slave start socket -U6- (positive)

2 -	Cable to fuse holder A in electronics box, engine compartment

3 -	Cable to main fuse carrier on the battery -A-

Back to overview → chapter.

AUDI TT 2012 Overview of coupling stations and connectors

Overview of coupling stations and connectors

1 -	Coupling station on right of dash panel, glove compartment

q	Connector -T8k-

q	Location → chapter

2 -	Coupling station under right front seat

q	Connectors-T10i-, -T3d-, -T6e-, -T10g-

q	Location → chapter

3 -	Coupling station on right of rear lid, in rear right roof frame

q	Connectors-T2f-, -T2e-, -T2d-, -T2c-

q	Location → chapter

4 -	Coupling station on left of rear lid, Roadster

q	Connectors-T6f-, -T8e-

q	Location → chapter

5 -	Coupling station in left side panel, Roadster

q	Connector -T10c-

q	Location → chapter

6 -	Coupling station on left of rear lid, behind side panel, Coupé

q	Connectors-T6f-, -T8e-

q	Location → chapter

7 -	Coupling station under left front seat

q	Connectors-T10f-, -T10h-, -T3c-, -T6d-

q	Location → chapter

8 -	Diagnostic connection

q	Connector -T16-

q	Location → chapter

9 -	Coupling station left in engine compartment

q	Connector -T14-

q	Location → chapter

AUDI TT 2012 Coupling station under left front seat Coupling station under left front seat Fitting location Under front left seat

Connectors: 1 -  Telephone transmitter and receiver unit -R36- 2 -  10-pin connector -T10f-, red 3 -  10-pin connector -T10h-, black 4 -  3-pin connector -T3c-, yellow 5 -  6-pin, connector -T6d-, green Back to overview → chapter. AUDI TT 2012 Coupling station under right front seat Coupling station under right front seat Fitting location Under front right seat.

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Connectors: 1 -  10-pin connector -T10i-, black 2 -  3-pin connector -T3d-, yellow 3 -  6-pin, connector -T6e-, green 4 -  10-pin connector -T10g-, red 5 -  Electronically controlled damping control unit -J250- Back to overview → chapter. AUDI TT 2012 Coupling station right rear lid, in rear right roof frame Coupling station right rear lid, in rear right roof frame Fitting location Behind the roof trim, upper right.

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Connectors: 1 -  2-pin connector -T2f-, blue, GPS 2 -  2-pin connector -T2e-, yellow, ZF/HF2 3 -  2-pin connector -T2d-, white, HF1 4 -  2-pin connector -T2c-, black, DAB Back to overview → chapter. AUDI TT 2012 Coupling station on left of rear lid, Roadster Coupling station on left of rear lid, Roadster Fitting location behind side trim on left.

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Connectors: 1 -  8-pin connector -T8e-, brown 2 -  6-pin, connector -T6f-, black Back to overview → chapter. AUDI TT 2012 Coupling station on left of rear lid, behind side panel, CoupГ© Coupling station on left of rear lid, behind side panel, Coupé Fitting location behind side trim on left.

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Connectors: 1 -  662 Earth point, rear left side panel 2 -  6-pin, connector -T6f-, black 3 -  Window aerial suppression filter -C18- 4 -  Rear left mid-range and bass loudspeaker -R159- 5 -  8-pin connector -T8e-, brown Back to overview → chapter. AUDI TT 2012 Coupling station left in engine compartment Coupling station left in engine compartment Fitting location in engine compartment, at front of left longitudinal member. Connector

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A -	14-pin connector -T14-, black

Back to overview → chapter. AUDI TT 2012 Coupling station on right of dash panel, glove compartment Coupling station on right of dash panel, glove compartment Fitting location Behind glove compartment at right. Connector

A -	8-pin connector -T8k-, black

Back to overview → chapter. AUDI TT 2012 Coupling station in left side panel, Roadster Coupling station in left side panel, Roadster Fitting location behind left luggage compartment side trim. Connector

A -	10-pin connector -T10c-, black

Back to overview → chapter. AUDI TT 2012 Diagnostic connection Diagnostic connection Fitting location under the shelf on the driver's side Connector

A -	16-pin connector -T16-, black

Back to overview → chapter.