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Wiring Diagram AUDI TT 2009 - Battery - Starter - Battery isolation igniter
| 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 |
 ">T47 | "> 47-pin connector |
| T75 | 75-pin connector, yellow |
| U6 | Jump start socket |
| 14 | Earth point, on gearbox |
| 51 | Earth point, on right in luggage compartment |
| 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, on battery on rear right in luggage compartment |
| *2 | Only models with jump start socket |
| *3 | From June 2007 |
Wiring Diagram AUDI TT 2009 - Alternator - Suppression filter
| C | Alternator |
| C1 | Voltage regulator |
| C24 | Suppression filter |
| J293 | Radiator fan control unit |
| J623 | Engine control unit |
| SA1 | Fuse 1 in fuse holder A |
| SA2 | Fuse 2 in fuse holder A |
| SA3 | Fuse 3 in fuse holder A |
| SA4 | Fuse 4 in fuse holder A |
| T4a | 4-pin connector, front left in engine compartment, black |
| T14 | 14-pin connector, front left in engine compartment, black |
| 85 | Earth connection 1, in engine compartment wiring harness |
| 366 | Earth connection 1, in main wiring harness |
| 672 | Earth point 2, on front of left longitudinal member |
| B272 | Positive connection (30), in main wiring harness |
| B298 | Positive connection 2 (30), in main wiring harness |
| * | Main fuse carrier, in E-box on left of plenum chamber |
| *2 | see applicable current flow diagram for engine |
| *3 | According to equipment |
Wiring Diagram AUDI TT 2009 - Fuse 1 on fuse holder C
| J104 | ABS control unit |
| SC1 | Fuse 1 on fuse holder C |
| SC2 | Fuse 2 on fuse holder C |
| SC3 | Fuse 3 on fuse holder C |
| SC4 | Fuse 4 on fuse holder C |
| SC5 | Fuse 5 on fuse holder C |
| SC6 | Fuse 6 on fuse holder C |
| SC12 | Fuse 12 on fuse holder C |
| SC13 | Fuse 13 on fuse holder C |
| ">T47 | "> 47-pin connector |
| B277 | Positive connection 1 (15a) in main wiring harness |
| B278 | Positive connection 2 (15a) in main wiring harness |
| B279 | Positive connection 3 (15a) in main wiring harness |
| B282 | Positive connection 6 (15a) in main wiring harness |
| * | Only models with mechanical headlight range control |
| *2 | From June 2007 |
Wiring Diagram AUDI TT 2009 - Terminal 50 voltage supply relay - Relay for power sockets
| E313 | Selector lever |
| F189 | Tiptronic switch |
| J682 | Terminal 50 voltage supply relay, Relay carrier on left under dash panel |
| J807 | Relay for power sockets |
| SC14 | Fuse 14 on fuse holder C |
| SC15 | Fuse 15 on fuse holder C |
| SC29 | Fuse 29 on fuse holder C |
| SC30 | Fuse 30 on fuse holder C |
| SC31 | Fuse 31 on fuse holder C |
| SC32 | Fuse 32 on fuse holder C |
| SC33 | Fuse 33 on fuse holder C |
| SC37 | Fuse 37 on fuse holder C |
| SC38 | Fuse 38 on fuse holder C |
| T10p | 10-pin connector |
| * | Only models with dual clutch gearbox 02E |
| *2 | From June 2007 |
| *3 | Only models with rain and light sensor |
| *4 | Up to May 2007 |
| *5 | Only for American markets |
Wiring Diagram AUDI TT 2009 - Ignition/starter switch - Steering column electronics control unit
| D | Ignition/starter switch |
| E313 | Selector lever |
| F189 | Tiptronic switch |
| G85 | Steering angle sender |
| J527 | Steering column electronics control unit |
| J623 | Engine control unit |
| N376 | Ignition key withdrawal lock solenoid |
| T10ag | 10-pin connector |
| T10p | 10-pin connector |
| T12i | 12-pin connector |
| T20c | 20-pin connector, black |
| * | Only models with dual clutch gearbox 02E |
| *2 | Up to May 2009 |
| *3 | see applicable current flow diagram for engine |
Wiring Diagram AUDI TT 2009 - Turn signal switch - Headlight dipper and flasher switch - Intermittent wiper switch - Cruise control system switch - Horn plate - Steering column electronics control unit
Wiring Diagram AUDI TT 2009 - Steering column electronics control unit
| J527 | Steering column electronics control unit |
| J623 | Engine control unit |
| T20c | 20-pin connector, black |
| B383 | Connection 1 (powertrain CAN bus, high), in main wiring harness |
| B390 | Connection 1 (powertrain CAN bus, low), in main wiring harness |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
| * | see applicable current flow diagram for engine |
| *2 | Data bus wire (CAN bus) |
Wiring Diagram AUDI TT 2009 - Onboard supply control unit - Terminal 15 voltage supply relay 2
| J519 | Onboard supply control unit |
| J681 | Terminal 15 voltage supply relay 2 |
| SF1 | Fuse 1 in fuse holder F |
| SF2 | Fuse 2 in fuse holder F |
| SF7 | Fuse 7 in fuse holder F |
| SF8 | Fuse 8 in fuse holder F |
| SF10 | Fuse 10 in fuse holder F |
| SF12 | Fuse 12 in fuse holder F |
| T2t | 2-pin connector, black |
| T8h | 8-pin connector, black |
| T11b | 11-pin connector, black |
| T11c | 11-pin connector, brown |
| B163 | Positive connection 1 (15), in interior wiring harness |
| B302 | Positive connection 6 (30), in main wiring harness |
| * | Relay carrier on onboard supply control unit, on left under dash panel |
| *2 | Coupé |
| *3 | Roadster |
Wiring Diagram AUDI TT 2009 - Onboard supply control unit
| J519 | Onboard supply control unit |
| T6h | 6-pin connector |
| T8h | 8-pin connector, black |
| T10d | 10-pin connector, black |
| T11b | 11-pin connector, black |
| T11c | 11-pin connector, brown |
| T12e | 12-pin connector, black |
| 42 | Earth point, next to steering column |
| 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 |
| 376 | Earth connection 11, in main wiring harness |
| * | Data bus wire (CAN bus) |
| *2 | Only models with mechanical headlight range control |
| *3 | Only models with daytime running lights |
Wiring Diagram AUDI TT 2009 - Light switch - Switch and instrument illumination regulator - Onboard supply control unit
| E1 | Light switch |
| E18 | Rear fog light switch |
| E20 | Switch and instrument illumination regulator |
| J519 | Onboard supply control unit |
| L9 | Light switch illumination bulb |
| T7 | 7-pin connector, black |
| T10e | 10-pin connector, black |
| T12c | 12-pin connector, black |
| T12e | 12-pin connector, black |
| T16a | 16-pin connector, black |
| B340 | Connection 1 (58d), in main wiring harness |
| B341 | Connection 2 (58d), in main wiring harness |
| * | Only models with automatic driving lights control |
| *2 | From June 2008 |
| *3 | Up to May 2008 |
| *4 | Only models with mechanical headlight range control |
| *5 | Only models with daytime running lights |
Wiring Diagram AUDI TT 2009 - Light switch - Headlight range control regulator - Daytime running lights switch - Treble horn - Bass horn - Horn relay - Onboard supply control unit
| E1 | Light switch |
| E102 | Headlight range control regulator |
| E579 | Daytime running lights switch |
| H2 | Treble horn |
| H7 | Bass horn |
| J413 | Horn relay |
| J519 | Onboard supply control unit |
| SC22 | Fuse 22 on fuse holder C |
| SC23 | Fuse 23 on fuse holder C |
| SC25 | Fuse 25 on fuse holder C |
| T6h | 6-pin connector |
| T7 | 7-pin connector, black |
| T10d | 10-pin connector, black |
| T16a | 16-pin connector, black |
| 43 | Earth point, lower part of right A-pillar |
| 391 | Earth connection 26, in main wiring harness |
| * | Relay carrier on onboard supply control unit, on left under dash panel |
| *2 | Only models with mechanical headlight range control |
| *3 | Up to May 2007 |
| *4 | Only models with daytime running lights |
| *5 | From June 2007 |
Wiring Diagram AUDI TT 2009 - Operating unit in front of centre console - Onboard supply control unit
| E127 | Adjustable rear spoiler switch |
| E226 | Tyre Pressure Monitoring System button |
| E229 | Hazard warning lights button |
| E256 | TCS and ESP button |
| E387 | Shock absorber damping adjustment button |
| E461 | Operating unit in front of centre console |
| J104 | ABS control unit |
| J250 | Electronically controlled damping control unit |
| J519 | Onboard supply control unit |
| J793 | Tyre Pressure Monitoring System control unit 2 |
| K6 | Indicator lamp for hazard warning light |
| K189 | Shock absorber damping adjustment warning lamp |
| K242 | Rear spoiler position warning lamp |
| L156 | Switch illumination bulb |
| T12e | 12-pin connector, black |
| T16b | 16-pin connector, brown |
| T18c | 18-pin connector, black |
| ">T47 | "> 47-pin connector |
| T47a | 47-pin connector |
| 44 | Earth point, lower part of left A-pillar |
| 384 | Earth connection 19, in main wiring harness |
| 394 | Earth connection 29, in main wiring harness |
| * | Only models with adjustable rear spoiler |
| *2 | Only models with Tyre Pressure Monitoring System |
| *3 | Only models with electronic damping control |
Wiring Diagram AUDI TT 2009 - Rain and light sensor - Headlight washer system relay - Wiper motor control unit - Onboard supply control unit - Washer pump relay - Washer pump
| G397 | Rain and light sensor |
| J39 | Headlight washer system relay |
| J126 | Fresh air blower control unit |
| J400 | Wiper motor control unit |
| J519 | Onboard supply control unit |
| J576 | Washer pump relay |
| ST1 | Fuse carrier 1 |
| SB6 | Fuse 6 on fuse holder B |
| SB8 | Fuse 8 on fuse holder B |
| SB12 | Fuse 12 on fuse holder B |
| T6h | 6-pin connector |
| T8h | 8-pin connector, black |
| T11c | 11-pin connector, brown |
| V | Windscreen wiper motor |
| V5 | Washer pump |
| V11 | Headlight washer system pump |
| 366 | Earth connection 1, in main wiring harness |
| 672 | Earth point 2, on front of left longitudinal member |
| B549 | Connection 2 (LIN bus) in main wiring harness |
| * | Only models with headlight washer system |
| *2 | Relay and fuse carrier, in E-box in engine compartment |
| *3 | Relay carrier on onboard supply control unit, on left under dash panel |
| *4 | Only models with rain and light sensor |
| *5 | Only models with no rain and light sensor |
Wiring Diagram AUDI TT 2009 - Onboard supply control unit - Left fog light bulb - Left headlight range control motor
| J519 | Onboard supply control unit |
| L22 | Left fog light bulb |
| L123 | Left dipped beam bulb |
| L125 | Left main beam bulb |
| M1 | Left side light bulb |
| M5 | Front left turn signal bulb |
| T10a | 10-pin connector, black |
| T11b | 11-pin connector, black |
| T11c | 11-pin connector, brown |
| V48 | Left headlight range control motor, on left headlight |
| 372 | Earth connection 7, in main wiring harness |
| * | Only models with mechanical headlight range control |
| *2 | Up to May 2007 |
| *3 | From June 2007 |
Wiring Diagram AUDI TT 2009 - Onboard supply control unit - Right fog light bulb - Right headlight range control motor
| J519 | Onboard supply control unit |
| L23 | Right fog light bulb |
| L124 | Right dipped beam bulb |
| L126 | Right main beam bulb |
| M3 | Right side light bulb |
| M7 | Front right turn signal bulb |
| T10b | 10-pin connector, black |
| T11b | 11-pin connector, black |
| T11c | 11-pin connector, brown |
| V49 | Right headlight range control motor, on right headlight |
| 389 | Earth connection 24, in main wiring harness |
| 390 | Earth connection 25, in main wiring harness |
| * | Only models with mechanical headlight range control |
Wiring Diagram AUDI TT 2009 - Onboard supply control unit - Left brake and tail light bulb - Right brake and tail light bulb
| J519 | Onboard supply control unit |
| M6 | Rear left turn signal bulb |
| M8 | Rear right turn signal bulb |
| M16 | Left reversing light bulb |
| M17 | Right reversing light bulb |
| M21 | Left brake and tail light bulb |
| M22 | Right brake and tail light bulb |
| M58 | Left brake and tail light bulb 2 |
| M59 | Right brake and tail light bulb 2 |
| T6k | 6-pin connector, black |
| T6l | 6-pin connector, black |
| T12c | 12-pin connector, black |
| T12d | 12-pin connector, brown |
| 43 | Earth point, lower part of right A-pillar |
| 51 | Earth point, on right in luggage compartment |
| 390 | Earth connection 25, in main wiring harness |
| 395 | Earth connection 30, in main wiring harness |
| 662 | Earth point, rear left side panel |
| * | Only models with automatic anti-dazzle interior mirror |
Wiring Diagram AUDI TT 2009 - Onboard supply control unit - Rear left turn signal bulb - Rear right turn signal bulb - Left brake light bulb - Right brake light bulb - Right reversing light bulb - Rear left side marker bulb - Rear right side marker bulb - Rear fog light
| J519 | Onboard supply control unit |
| M6 | Rear left turn signal bulb |
| M8 | Rear right turn signal bulb |
| M9 | Left brake light bulb |
| M10 | Right brake light bulb |
| M16 | Left reversing light bulb |
| M17 | Right reversing light bulb |
| M37 | Rear left side marker bulb |
| M38 | Rear right side marker bulb |
| T2g | 2-pin connector, on right in luggage compartment, black |
| T6k | 6-pin connector |
| T6l | 6-pin connector, black |
| T12c | 12-pin connector, black |
| T12d | 12-pin connector, brown |
| X3 | Rear fog light |
| 395 | Earth connection 30, in main wiring harness |
| 662 | Earth point, rear left side panel |
| * | Only for American markets |
| *2 | Not for American markets |
Wiring Diagram AUDI TT 2009 - Onboard supply control unit - Additional brake light bulb - Left number plate light - Right number plate light
| E230 | Heated rear window button |
| J255 | Climatronic control unit |
| J519 | Onboard supply control unit |
| M25 | Additional brake light bulb |
| T8e | 8-pin connector, in left side panel, to rear lid, brown |
| T12d | 12-pin connector, brown |
| T16c | 16-pin connector, brown |
| X4 | Left number plate light |
| X5 | Right number plate light |
| 53 | Earth point, on right in rear lid |
| 98 | Earth connection, in rear lid wiring harness |
| 218 | Earth connection 1, in rear lid wiring harness |
| 662 | Earth point, rear left side panel |
| C65 | Positive connection 1, in side marker light wiring harness |
| Q22 | Connection 1, in rear lid wiring harness |
| * | Controls for heated rear window via CAN bus |
| *2 | From June 2008 |
| *3 | Data bus wire (CAN bus) |
| *4 | Up to May 2008 |
| *5 | Roadster |
| *6 | Coupé |
| *7 | Up to May 2007 |
| *8 | From June 2007 |
Wiring Diagram AUDI TT 2009 - Window aerial suppression filter - Heated rear window relay - Onboard supply control unit - Heated rear window
| C18 | Window aerial suppression filter |
| C24 | Suppression filter |
| J9 | Heated rear window relay |
| J519 | Onboard supply control unit |
| T1a | Single connector, in rear left side panel, black |
| T10d | 10-pin connector, black |
| T52a | 52-pin connector |
| Z1 | Heated rear window |
| 53 | Earth point, on right in rear lid |
| 98 | Earth connection, in rear lid wiring harness |
| 219 | Earth connection 2, in rear lid wiring harness |
| 287 | Earth connection, in rear lid feeder wiring harness |
| 662 | Earth point, rear left side panel |
| * | Relay carrier on onboard supply control unit, on left under dash panel |
| *2 | Only models with radio |
| *3 | From June 2007 |
| *4 | Up to May 2007 |
| *5 | Only models with no radio |
Wiring Diagram AUDI TT 2009 - Reversing light switch - Onboard supply control unit - Left washer jet heater element
| F4 | Reversing light switch |
| J519 | Onboard supply control unit |
| SC7 | Fuse 7 on fuse holder C |
| T6h | 6-pin connector |
| T8h | 8-pin connector, black |
| Z20 | Left washer jet heater element |
| Z21 | Right washer jet heater element |
| B281 | Positive connection 5 (15a) in main wiring harness |
| * | Only models with manual gearbox |
| *2 | Up to May 2007 |
| *3 | From June 2007 |
Wiring Diagram AUDI TT 2009 - Brake light switch - Brake pedal switch - Clutch position sender - Onboard supply control unit
| F | Brake light switch |
| F47 | Brake pedal switch |
| G476 | Clutch position sender |
| J104 | ABS control unit |
| J271 | Main relay |
| J519 | Onboard supply control unit |
| J623 | Engine control unit |
| J743 | Mechatronic unit for dual clutch gearbox |
| ST2 | Fuse carrier 2 |
| SB8 | Fuse 8 on fuse holder B |
| SB11 | Fuse 11 on fuse holder B |
| T4t | 4-pin connector, black |
| T16a | 16-pin connector, black |
| T20e | 20-pin connector |
| ">T47 | "> 47-pin connector |
| 371 | Earth connection 6, in main wiring harness |
| B335 | Connection 1 (54), in main wiring harness |
| * | Relay and fuse carrier, in E-box in engine compartment |
| *2 | see applicable current flow diagram for engine |
| *3 | Only models with manual gearbox |
| *4 | Up to May 2007 |
| *5 | From June 2007 |
| *6 | Only for American markets |
| *7 | Only models with dual clutch gearbox 02E |
| *8 | Not for American markets |
Wiring Diagram AUDI TT 2009 - Glove compartment light switch - Driver vanity mirror contact switch - Onboard supply control unit - Terminal 30 voltage supply relay 2 - Front left footwell illumination bulb - Front right footwell illumination bulb - Glove compartment light - Driver side illuminated vanity mirror
| E26 | Glove compartment light switch |
| F147 | Driver vanity mirror contact switch |
| F148 | Front passenger vanity mirror contact switch |
| J519 | Onboard supply control unit |
| J689 | Terminal 30 voltage supply relay 2 |
| L151 | Front left footwell illumination bulb |
| L152 | Front right footwell illumination bulb |
| T8k | 8-pin connector, behind dash panel, right, black |
| T10d | 10-pin connector, black |
| T11c | 11-pin connector, brown |
| T12c | 12-pin connector, black |
| T52a | 52-pin connector |
| W6 | Glove compartment light |
| W14 | Front passenger side illuminated vanity mirror |
| W20 | Driver side illuminated vanity mirror |
| 44 | Earth point, lower part of left A-pillar |
| 370 | Earth connection 5, in main wiring harness |
| 388 | Earth connection 23, in main wiring harness |
| B320 | Positive connection 6 (30a) in main wiring harness |
| * | Only models with additional lights |
| *2 | Relay carrier on onboard supply control unit, on left under dash panel |
Wiring Diagram AUDI TT 2009 - Front interior light - Automatic anti-dazzle interior mirror
| E326 | Front interior light button |
| E457 | Driver side reading light button |
| E458 | Front passenger side reading light button |
| L156 | Switch illumination bulb |
| T6m | 6-pin connector, black |
| T6n | 6-pin connector, black |
| W1 | Front interior light |
| W13 | Front passenger reading light |
| W19 | Driver side reading light |
| Y7 | Automatic anti-dazzle interior mirror |
| * | Only models with automatic anti-dazzle interior mirror |
Wiring Diagram AUDI TT 2009 - Convenience system central control unit - Tank filler flap locking motor - Automatic anti-dazzle interior mirror
| J386 | Driver door control unit |
| J387 | Front passenger door control unit |
| J393 | Convenience system central control unit |
| T6n | 6-pin connector, black |
| T8g | 8-pin connector, black |
| T18g | 18-pin connector, brown |
| T20a | 20-pin connector, in front left door, black |
| T20b | 20-pin connector, in front right door, black |
| T20f | 20-pin connector, black |
| T20g | 20-pin connector, black |
| V155 | Tank filler flap locking motor |
| Y7 | Automatic anti-dazzle interior mirror |
| 51 | Earth point, on right in luggage compartment |
| B427 | Connection 1 (mirror signal), in main wiring harness |
| B428 | Connection 2 (mirror signal), in main wiring harness |
| * | Only models with automatic anti-dazzle interior mirror |
Wiring Diagram AUDI TT 2009 - Parking brake contact switch - Convenience system central control unit - Cigarette lighter - 12 V socket - Luggage compartment light
| F321 | Parking brake contact switch |
| J393 | Convenience system central control unit |
| L28 | Cigarette lighter illumination bulb |
| L42 | Socket illumination bulb |
| T8g | 8-pin connector, black |
| T18g | 18-pin connector, brown |
| U1 | Cigarette lighter |
| U5 | 12 V socket |
| W3 | Luggage compartment light |
| 44 | Earth point, lower part of left A-pillar |
| 51 | Earth point, on right in luggage compartment |
| 376 | Earth connection 11, in main wiring harness |
| 395 | Earth connection 30, in main wiring harness |
| B398 | Connection 2 (convenience CAN bus, high), in main wiring harness |
| B407 | Connection 2 (convenience CAN bus, low), in main wiring harness |
| B489 | Connection 25, in main wiring harness |
| * | Only for American markets |
| *2 | Only models with adjustable rear spoiler |
| *3 | Data bus wire (CAN bus) |
| *4 | From June 2007 |
| *5 | Up to May 2007 |
Wiring Diagram AUDI TT 2009 - Control unit in dash panel insert - Data bus diagnostic interface
| J285 | Control unit in dash panel insert |
| J533 | Data bus diagnostic interface |
| T20d | 20-pin connector, black |
| T32 | 32-pin connector, blue |
| 377 | Earth connection 12, in main wiring harness |
| B321 | Positive connection 7 (30a) in main wiring harness |
| * | Wake-up wire |
| *2 | Data bus wire (CAN bus) |
| *3 | Only models with manual gearbox |
| *4 | Not for American markets |
| *5 | Up to May 2007 |
Wiring Diagram AUDI TT 2009 - Immobiliser reader coil - Control unit in dash panel insert - Data bus diagnostic interface
| D2 | Immobiliser reader coil |
| E313 | Selector lever |
| F189 | Tiptronic switch |
| J285 | Control unit in dash panel insert |
| J362 | Immobiliser control unit |
| J533 | Data bus diagnostic interface |
| T10p | 10-pin connector |
| T20d | 20-pin connector, black |
| T32 | 32-pin connector, blue |
| B415 | Connection 1 (infotainment CAN bus, high), in main wiring harness |
| B421 | Connection 1 (infotainment CAN bus, low), in main wiring harness |
| * | Only models with dual clutch gearbox 02E |
| *2 | Data bus wire (CAN bus) |
Wiring Diagram AUDI TT 2009 - Control unit in dash panel insert - Radio controlled clock receiver
| J285 | Control unit in dash panel insert |
| J489 | Radio controlled clock receiver |
| J623 | Engine control unit |
| J743 | Mechatronic unit for dual clutch gearbox |
| T16 | 16-pin connector |
| T20e | 20-pin connector |
| T32 | 32-pin connector, blue |
| Y8 | Radio controlled clock |
| 393 | Earth connection 28, in main wiring harness |
| 662 | Earth point, rear left side panel |
| B444 | Connection 1 (diagnosis), in main wiring harness |
| * | Diagnostic connection |
| *2 | see applicable current flow diagram for engine |
| *3 | Data bus wire (CAN bus) |
Wiring Diagram AUDI TT 2009 - Brake fluid level warning contact - Coolant shortage indicator switch - Washer fluid warning contact - Ambient temperature sensor - Front left brake pad wear sender - Control unit in dash panel insert - Brake pad warning lamp
| F34 | Brake fluid level warning contact |
| F66 | Coolant shortage indicator switch |
| F77 | Washer fluid warning contact |
| G17 | Ambient temperature sensor |
| G34 | Front left brake pad wear sender |
| J285 | Control unit in dash panel insert |
| K32 | Brake pad warning lamp |
| T32 | 32-pin connector, blue |
| Y24 | Display in dash panel insert |
| 410 | Earth connection 1 (sender earth) in main wiring harness |
| B379 | Connection 1 (brake pad wear indicator), in main wiring harness |
| B380 | Connection 2 (brake pad wear indicator), in main wiring harness |
| * | Output for sender earth |
Wiring Diagram AUDI TT 2009 - Oil pressure switch - Fuel gauge sender - Fuel gauge - Fuel gauge sender 2 - Oil level and oil temperature sender - Control unit in dash panel insert
| F1 | Oil pressure switch |
| G | Fuel gauge sender |
| G1 | Fuel gauge |
| G169 | Fuel gauge sender 2 |
| G266 | Oil level and oil temperature sender |
| J285 | Control unit in dash panel insert |
| J538 | Fuel pump control unit |
| K3 | Oil pressure warning lamp |
| T5a | 5-pin connector |
| T6a | 6-pin connector, front left in engine compartment, black |
| T10k | 10-pin connector, black |
| T14 | 14-pin connector, front left in engine compartment, black |
| T32 | 32-pin connector, blue |
| * | see applicable current flow diagram for engine |
| *2 | Only models with all-wheel drive |
| *3 | According to equipment |
Wiring Diagram AUDI TT 2009 - Steering moment sender - Power steering control unit
| G269 | Steering moment sender |
| J500 | Power steering control unit |
| T2s | 2-pin connector, black |
| T3l | 3-pin connector |
| T5d | 5-pin connector |
| T5e | 5-pin connector, grey |
| T6a | 6-pin connector, front left in engine compartment, black |
| 671 | Earth point 1, on front of left longitudinal member |
| * | Up to May 2008 |
| *2 | From June 2008 |
| *3 | Data bus wire (CAN bus) |
AUDI TT 2009
AUDI TT 2009 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 |
| 5 - | Radio, telephone and navigation system aerial -R52- |
| 8 - | Aerial amplifier 2 -R111- on rear lid bottom right |
| 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 |
| Door coupling - A-pillar 20-pin connector -T20a-/20-pin connector -T20b- |
| Front left mid-range loudspeaker -R103-/front right mid-range loudspeaker -R104- |
| Driver side interior locking button for central locking system -E308-/front passenger side interior locking button -E309- |
| Mirror adjustment switch -E43-/mirror adjustment changeover switch -E48- |
| Operating unit for window regulator in driver door -E512-/window regulator switch in front passenger door -E107- |
| Alarm system off switch -E217-/interior monitoring switch -E183- |
| Driver side central locking lock unit -F220-/Rear left central locking lock unit -F222- |
| 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- |
| Fuel tank flap release button -E319-/rear lid remote release button -E233- |
| Front left bass loudspeaker -R21-/front right bass loudspeaker -R23- |
| Routing dash panel wiring harness |
| 1 - | Wiring harness to A-pillar, left roof |
| 5 - | Photosensor for sunlight intensity -G107- |
| 7 - | 9 - | CD changer -R41- |
| 17 - | Chip card reader unit -R99- |
| 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- |
| 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 |
| 21 - | Centre loudspeaker -R148- |
| Plenum chamber - engine compartment wiring harness routing |
| 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 |
| 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- |
