Wiring Diagram AUDI TT 2008 - Connection 1 (powertrain CAN bus - high) - in main wiring harness
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Wiring Diagram AUDI TT 2008 - Connection 1 (powertrain CAN bus - low) - in main wiring harness
Wiring Diagram AUDI TT 2008 - Connection 2 (powertrain CAN bus - high) - in main wiring harness - Connection 2 (powertrain CAN bus - low) - in main wiring harness
Wiring Diagram AUDI TT 2008 - Connection 1 (convenience CAN bus - high) - in main wiring harness - Connection 1 (convenience CAN bus - low) - in main wiring harness
| J256 | Convertible roof actuation control unit |
| J386 | Driver door control unit |
| J519 | Onboard supply control unit |
| J527 | Steering column electronics control unit |
| J533 | Data bus diagnostic interface |
| T12e | 12-pin connector, black |
| T20a | 20-pin connector, in front left door, black |
| T20c | 20-pin connector, black |
| T20d | 20-pin connector, black |
| T20f | 20-pin connector |
| T20v | 20-pin connector, red |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
| * | Roadster with power operated convertible roof |
Wiring Diagram AUDI TT 2008 - Connection 2 (convenience CAN bus - high) - in main wiring harness - Connection 2 (convenience CAN bus - low) - in main wiring harness
| J255 | Climatronic control unit |
| J387 | Front passenger door control unit |
| J393 | Convenience system central control unit |
| J446 | Parking aid control unit |
| J502 | Tyre Pressure Monitoring System control unit |
| T12m | 12-pin connector, in luggage compartment, rear right, brown |
| T16c | 16-pin connector, brown |
| T16e | 16-pin connector, brown |
| T18g | 18-pin connector, brown |
| T20b | 20-pin connector, in front right door, black |
| T20g | 20-pin connector |
| T20h | 20-pin connector, red |
| B398 | Connection 2 (convenience CAN bus, high), in main wiring harness |
| B407 | Connection 2 (convenience CAN bus, low), in main wiring harness |
| * | Only models with parking aid (PDC) |
| *2 | Up to May 2009 |
| *3 | Only models with interface for special functions |
| *4 | Only for American markets |
Wiring Diagram AUDI TT 2008 - Connection (high bus) - in dash panel wiring harness
Wiring Diagram AUDI TT 2008 - Connection 1 (infotainment CAN bus - high) - in main wiring harness
| J401 | Navigation system with CD drive control unit |
| J503 | Control unit with display for radio and navigation |
| J525 | Digital sound package control unit |
| J533 | Data bus diagnostic interface |
| R | Radio |
| R36 | Telephone transmitter and receiver unit |
| R78 | TV tuner |
| R146 | Satellite radio |
| T2l | 2-pin connector, black |
| T8a | 8-pin connector, black |
| T8m | 8-pin connector, black |
| T20d | 20-pin connector, black |
| T32a | 32-pin connector, black |
| T38 | 38-pin connector, black |
| T54 | 54-pin connector, black |
| T54a | 54-pin connector |
| B415 | Connection 1 (infotainment CAN bus, high), in main wiring harness |
| * | Only models with radio navigation system RNS-E |
| *2 | Only models with Standard sound system |
| *3 | Only models with BOSE sound system |
| *4 | Only models with satellite radio |
| *5 | Only models with preparation for mobile telephone |
| *6 | Only models with navigation system, Low |
| *7 | Only models with TV tuner |
| *8 | Only models with equipment for Japan |
| *9 | Only models with navigation system |
| *10 | From February 2009 |
Wiring Diagram AUDI TT 2008 - Connection 1 (infotainment CAN bus - low) - in main wiring harness
| J401 | Navigation system with CD drive control unit |
| J503 | Control unit with display for radio and navigation |
| J525 | Digital sound package control unit |
| J533 | Data bus diagnostic interface |
| R | Radio |
| R36 | Telephone transmitter and receiver unit |
| R78 | TV tuner |
| R146 | Satellite radio |
| T2l | 2-pin connector, black |
| T8a | 8-pin connector, black |
| T8m | 8-pin connector, black |
| T20d | 20-pin connector, black |
| T32a | 32-pin connector, black |
| T38 | 38-pin connector, black |
| T54 | 54-pin connector, black |
| T54a | 54-pin connector |
| B421 | Connection 1 (infotainment CAN bus, low), in main wiring harness |
| * | Only models with preparation for mobile telephone |
| *2 | Only models with navigation system, Low |
| *3 | Only models with TV tuner |
| *4 | Only models with equipment for Japan |
| *5 | Only models with navigation system |
| *6 | Only models with radio navigation system RNS-E |
| *7 | Only models with Standard sound system |
| *8 | Only models with BOSE sound system |
| *9 | Only models with satellite radio |
| *10 | From February 2009 |
AUDI TT 2008 Overview of control units
Overview of control units | | Climatronic control unit -J255- |
| q | Components:-E230-, -G56-, -V42-, -E94-, -E95- |
| q | Location and connector assignment |
| Control unit in dash panel insert -J285- |
| q | Components:-G1-, -Y24-, -K3-, -K32-, -Y8-, -J362-, -K28- |
| q | Location and connector assignment |
| Front passenger door control unit -J387- |
| q | Location and connector assignment |
| Steering column electronics control unit -J527- |
| q | Components:-D-, -N376-, -G85-, -E45-, -E2-, -E4-, -E22-, -F138-, -H-, -N95-, -N250- |
| q | Location and connector assignment |
| Control unit for parking aid -J446- |
| q | Location and connector assignment |
| q | is dropped from May 2009 |
| Digital sound package control unit -J525- |
| Driver door control unit -J386- |
| q | Location and connector assignment |
| q | Location and connector assignment from June 2009 |
| 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 |
AUDI TT 2008 ABS control unit J104ABS control unit -J104- |
| | |
| in engine compartment on right at bulkhead -1-. | | | |
| A - | ABS control unit -J104- |
AUDI TT 2008 Engine control unit J623
Engine control unit -J623- |
| | | A - | Engine control unit -J623- |
| C - | 60-pin connector -T60-, black, on wiring harness |
| Connector assignment, 3.2 I V6 | | | |
| A - | Engine control unit -J623- |
| C - | 40-pin connector -T40-, black, on wiring harness |
AUDI TT 2008 Control unit for parking aid J446Control unit for parking aid -J446- |
| | |
| on right in luggage compartment -3-. | | 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- | | | |
| C - | 12-pin connector -T12l-, black |
AUDI TT 2008 Convenience system central control unit J393 , up to May 2009Convenience system central control unit -J393-, up to May 2009 |
| | |
| on right in luggage compartment -4-. | | 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- | | | |
| A - | Convenience system central control unit -J393- |
| D - | 8-pin connector -T8g-, black, on wiring harness |
| F - | 18-pin connector -T18f-, black, on wiring harness |
AUDI TT 2008 Driver door control unit J386Driver door control unit -J386- |
| | |
| 1 - | Driver door control unit -J386- | Note | Illustration shows the left side. | | | |
| A - | Driver door control unit -J386- |
| C - | 16-pin connector -T16f-, black, on wiring harness |
| D - | 20-pin connector -T20f-, black, on wiring harness |
AUDI TT 2008 Front passenger door control unit J387Front passenger door control unit -J387- |
| | |
| in front passenger door -1-. | | 1 - | Front passenger door control unit -J387- | Note | Illustration shows the left side. | | | |
| A - | Front passenger door control unit -J387- |
| C - | 16-pin connector -T16g-, black, on wiring harness |
| D - | 20-pin connector -T20g-, black, on wiring harness |
AUDI TT 2008 Convertible roof actuation control unit J256 , RoadsterConvertible roof actuation control unit -J256-, Roadster |
| | |
| in insert, luggage compartment -6-. | | 1 - | Aerial amplifier for mobile telephone -R86-, not USA | | - | Satellite radio -R146-, only USA | | 6 - | Convertible roof actuation control unit -J256-, only Roadster | | Connector assignment of convertible roof actuation control unit -J256- | | | |
| 2 - | 10-pin connector -T10v-, black |
AUDI TT 2008 Digital sound package control unit J525Digital sound package control unit -J525- |
| | |
| 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 |
AUDI TT 2008 Electronically controlled damping control unit J250Electronically controlled damping control unit -J250- |
| | |
| 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- | | | |
| A - | 47-pin connector -T47-, black |
AUDI TT 2008 Steering column electronics control unit J527Steering column electronics control unit -J527- |
| On steering column, at steering column switch. | | | |
| C - | 20-pin connector -T20c-, black, on wiring harness |
| E - | 12-pin connector -T12i- |
| G - | 10-pin connector -T10ag- |
| H - | 10-pin connector -T10ah- |
AUDI TT 2008 onboard supply control unit J519 , up to May 2009onboard supply control unit -J519-, up to May 2009 |
| | |
| 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- | | | |
| B - | 12-pin connector -T12c-, black |
| D - | 11-pin connector -T11c-, brown |
| F - | 8-pin connector -T8h-, black |
| J - | 6-pin, connector -T6h-, black |
| L - | 2-pin connector -T2t-, black |
AUDI TT 2008 onboard supply control unit J519 , from June 2009onboard supply control unit -J519-, from June 2009 |
| | |
| behind shelf on front passenger side -3-. | | 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 | | | |
| behind shelf on front passenger side -3- | | 1 - | Relay carrier behind dash panel | | 3 - | onboard supply control unit -J519- | | 4 - | Relay carrier on onboard supply control unit -J519- | | Connector assignment onboard supply control unit -J519- | | | |
| 2 - | 52-pin connector -T52b-, yellow |
| 3 - | 52-pin connector -T52c-, brown |
AUDI TT 2008 Control unit in dash panel insert J285Control unit in dash panel insert -J285- |
| | |
| 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- | | | |
| 1 - | 32-pin connector -T32-, blue |
AUDI TT 2008 Data bus diagnostic interface J533Data bus diagnostic interface -J533- |
| | |
| Behind the shelf on the driver's side, at bottom next to steering column -1-. | | | |
| 1 - | 20-pin connector -T20d-, black |
AUDI TT 2008 Headlight range control, control unit J431Headlight range control, control unit -J431- |
| | |
| Behind the shelf on the driver's side, on right next to steering column -1-. | | | |
| A - | Headlight range control, control unit -J431- |
| B - | 26-pin connector -T26a-, black, on wiring harness |
AUDI TT 2008 Airbag control unit J234Airbag control unit -J234- |
| | |
| Under centre console -2-. | | 1 - | 75-pin connector -T75- | | 2 - | Airbag control unit -J234- | | Connector assignment of airbag control unit -J234- | | | |
| A - | 75-pin connector -T75-, yellow |
AUDI TT 2008 Fuel pump control unit J538Fuel pump control unit -J538- |
| At lower right on fuel tank. | | | |
| A - | Fuel pump control unit -J538- |
| A - | Fuel pump control unit -J538- |
| B - | 10-pin connector -T10k-, black, on wiring harness |
AUDI TT 2008 Tyre pressure monitor control unit 2 J793Tyre pressure monitor control unit 2 -J793- |
| | |
| Behind the instrument cluster -1-. | | | |
| 1 - | 18-pin connector -T18c-, black |
AUDI TT 2008 Climatronic control unit J255Climatronic control unit -J255- |
| | |
| In front centre console -1-. | | | |
| 2 - | 20-pin connector -T20k- |
| 4 - | 16-pin connector -T16c-, brown |
| 5 - | 3-pin connector -T3ae-, black |
AUDI TT 2008 Wiper motor control unit J400Wiper motor control unit -J400- |
| in driver side plenum chamber. | | | |
| 3 - | Wiper motor control unit -J400- |
| 5 - | 4-pin connector -T4-, black |
AUDI TT 2008 Radiator fan control unit J293Radiator fan control unit -J293- |
| | |
| 1 - | 4-pin connector -T4c-, black |
| 2 - | 4-pin connector -T4c-, black |
| 3 - | Radiator fan control unit -J293- |
| 4 - | Radiator fan 2 -V177- |
AUDI TT 2008 Power steering control unit J500Power steering control unit -J500- |
| | |
| A - | Power steering control unit -J500- |
| B - | 2-pin connector -T2s-, black |
AUDI TT 2008 Radio controlled clock receiver J489Radio controlled clock receiver -J489- |
| | |
| behind the rear left bumper. | | 1 - | Radio controlled clock receiver -J489- |
AUDI TT 2008 Battery monitor control unit J367Battery monitor control unit -J367- |
| | |
| 2 - | Battery monitor control unit -J367- | | 2 - | 2-pin connector -T2au-, yellow |
AUDI TT 2008 Tyre pressure monitor control unit J502 , USATyre pressure monitor control unit -J502-, USA |
| behind instrument cluster. | | | |
| 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 | |
AUDI TT 2008 Left gas discharge bulb control unit J343 / right gas discharge light control unit J344Left gas discharge bulb control unit -J343-/right gas discharge light control unit -J344- |
| | |
| 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- |
| 14-pin connector -T14a-/14-pin connector -T14b-, black |
AUDI TT 2008 Anti-theft alarm sensor G578Anti-theft alarm sensor -G578- |
| 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 |
AUDI TT 2008 Front interior light W1Front interior light -W1- |
| 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 |
AUDI TT 2008 Overview of convertible roof components
Overview of convertible roof components |
| q | Location convertible roof latch open switch -F294- |
| 5 - | Convertible roof latch closed switch -F295-, right |
| Right convertible top cover motor -V381-/right sender for convertible roof cover -G597- |
| Left convertible top cover motor -V383-/left sender for convertible roof cover -G596- |
| Cabrio windbreak switch -E278- | | | |
| Convertible roof actuation hydraulic pump -V118- | | | |
| In front left of luggage compartment -1-. | | Cabrio windbreak motor -V186- | | | |
| On windbreak at centre of luggage compartment wall -1-. | | Convertible roof lock motor -V223- | | | |
| On convertible roof linkage at front centre -1-. | | Front latch switch for convertible roof -F172- | | | |
| On left roof cross member behind the sun visor -1-. | | Right latch switch for convertible roof -F170- | | | |
| On right roof cross member behind the sun visor -1-. | | Convertible roof latch closed switch -F295-, left | | | |
| On convertible roof linkage at front left -1-. | | Convertible roof latch closed switch -F295-, right | | | |
| On convertible roof linkage at front right -1-. | | Convertible roof stowed switch -F171- | | | |
| On convertible roof mechanism at lower left behind the side trim panel -1-. | | Convertible roof front switch -F202- | | | |
| On convertible roof mechanism at left behind the side trim panel -1-. | | Right convertible top cover motor -V381-/right sender for convertible roof cover -G597- | | | |
| Under the right convertible top cover -1-. | | Left convertible top cover motor -V383-/left sender for convertible roof cover -G596- | | | |
| Under the left convertible top cover -1-. | | Convertible roof latch open switch -F294- | | On right roof cross member behind the sun visor -1-. | | | |
| 1 - | Convertible roof latch open switch -F294- |
| 2 - | Contact for convertible roof latch open switch -F294- |
| 3 - | Cable to 4-pin connector -T4w- |
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