Wiring Diagram AUDI TT 2004 - CAN bus wires - high bus connection - low bus connection
| F189 | Tiptronic switch |
| G85 | Steering angle sender |
| J104 | ABS with EDL control unit |
| J217 | Automatic gearbox control unit |
| J220 | Motronic control unit |
| J285 | Control unit with display in dash panel insert |
| J492 | Four-wheel drive control unit |
| J743 | Direct shift gearbox mechatronics |
| T8d | 8-pin connector, for four-wheel drive control unit |
| T10a | 10-pin connector, white, in plenum chamber |
| T20a | 20-pin connector, on direct shift gearbox mechatronics |
| T32a | 32-pin connector, green, on dash panel insert |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| * | Models with automatic gearbox 09G |
| ** | Models with quattro four-wheel drive |
| *** | Models with direct shift gearbox 02E |
Wiring Diagram AUDI TT 2004 - CAN bus wires (convenience features - display)
| J285 | Control unit with display in dash panel insert |
| J401 | Navigation system with CD drive control unit |
| R | Radio |
| T6k | 6-pin connector, green, radio connector I-2 |
| T6ap | 6-pin connector, connector C I, on navigation control unit |
| T32b | 32-pin connector, grey, on dash panel insert |
| A148 | Connection (navigation CAN bus, high), in dash panel wiring harness |
| A149 | Connection (navigation CAN bus, low), in dash panel wiring harness |
| * | Models with radio |
| ** | Models with navigation system 'NS Low' |
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