Wiring Diagram AUDI A4 2001 - Telephone AEG (D-network) - with multi-function steering wheel
| J402 | Operating electronics control unit, navigation |
| J453 | Multi-function steering wheel control unit |
| R | Radio |
| R2 | Loudspeaker, front left |
| R3 | Loudspeaker, front right |
| R11 | Aerial |
| R36 | Telephone transmitter and receiver unit |
| T6n | 6-pin connector, green, at A pillar, left |
| T6u | 6-pin connector, green, at A pillar, right |
| T8b | 8-pin connector, brown, on radio |
| T9 | 9-pin connector, on telephone transmitter and receiver unit |
| T10af | 10-pin connector, red, on radio |
| T10ag | 10-pin connector, brown, in centre console |
| T25 | 25-pin connector, on telephone transmitter and receiver unit |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A57 | Connection (30a), in dash panel wiring harness |
| A129 | Connection (muting), in dash panel wiring harness |
| * | Only models without navigation system |
| ** | Only models with navigation system |
Wiring Diagram AUDI A4 2001 - Telephone AEG (D-network) - with multi-function steering wheel
| R36 | Telephone transmitter and receiver unit |
| R37 | Telephone handset |
| R38 | Telephone microphone |
| T2a | 2-pin connector, at A pillar, left |
| T8 | 8-pin connector, in centre console |
| T9 | 9-pin connector, on telephone transmitter and receiver unit |
| T25 | 25-pin connector, on telephone transmitter and receiver unit |
| 44 | Earth point, lower part of left A-pillar |
| V15 | Connection, in telephone wiring harness |
| V16 | Connection (screening), in telephone wiring harness |
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