Wiring Diagram AUDI A2 2003 - Ignition/starter switch - reversing light switch - navigation system with CD drive control unit
| D | Ignition/starter switch |
| F4 | Reversing light switch |
| J401 | Navigation system with CD drive control unit |
| SB29 | Fuse -29- on fuse box |
| SB37 | Fuse -37- on fuse box |
| SB38 | Fuse -38- on fuse box |
| T8e | 8-pin connector, black, navigation system with CD drive control unit |
| T16 | 16-pin connector, diagnostic connector, black, near fuse box |
| T17 | 17-pin connector, brown, in footwell, front left |
| T17e | 17-pin connector, blue, in footwell, front left |
| 277 | Earth connection -3-, in interior wiring harness |
| 500 | Screw connection -1- (30), on relay plate |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A87 | Connection (RF (reversing light)), in dash panel wiring harness |
| A98 | Positive (+) connection -4- (30), in dash panel wiring harness |
| A104 | Positive (+) connection -2- (15), in dash panel wiring harness |
| B135 | Connection -1- (15a), in interior wiring harness |
| B156 | Positive (+) connection (30a), in interior wiring harness |
| * | As of model year 2003 no longer fitted (phased-in modification) |
| ** | Phased-in modification |
Wiring Diagram AUDI A2 2003 - Navigation system with CD drive control unit - mobile phone operating electronics control unit - telephone/telematics control unit - radio
| J401 | Navigation system with CD drive control unit |
| J412 | Operating electronics control unit, mobile phone |
| J526 | Telephone/telematics control unit |
| R | Radio |
| T10d | 10-pin connector, red, radio connector IV |
| T10t | 10-pin connector, black, on telephone/telematics control unit |
| T18 | 18-pin connector, black, mobile phone interface, in front passenger's footwell |
| T20e | 20-pin connector, black, navigation system with CD drive control unit |
| T46 | 46-pin connector, black, on telephone/telematics control unit |
| A129 | Connection (muting), in dash panel wiring harness |
| * | Only applies to models with radio Chorus, Concert or Symphony |
| ** | Only applies to models with provision for mobile phone |
| *** | Only applies to models with telematics |
Wiring Diagram AUDI A2 2003 - Control unit with display in dash panel insert - navigation system with CD drive control unit
| J285 | Control unit with display in dash panel insert |
| J401 | Navigation system with CD drive control unit |
| R1 | Aerial connection |
| R50 | Navigation aerial (GPS) |
| T8e | 8-pin connector, black, navigation system with CD drive control unit |
| T16 | 16-pin connector, black, diagnostic connector |
| T20e | 20-pin connector, black, navigation system with CD drive control unit |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| T32b | 32-pin connector, grey, on dash panel insert |
| A27 | Connection (speed signal), in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| A178 | Connection (infotainment CAN bus, high), in dash panel wiring harness |
| A179 | Connection (infotainment CAN bus, low), in dash panel wiring harness |
Wiring Diagram AUDI A2 2003 - Function selection switch II - control unit with display in dash panel insert
| E1 | Lighting switch |
| E272 | Function selection switch II |
| J285 | Control unit with display in dash panel insert |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32b | 32-pin connector, grey, on dash panel insert |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| B145 | Positive (+) connection (58b), in interior wiring harness |
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