Wiring Diagram AUDI A4 2006 - Telephone/telematics control unit - fuses
| D | Ignition/starter switch |
| J526 | Telephone/telematics control unit |
| S5 | Fuse in fuse box/relay plate |
| S8 | Fuse in fuse box/relay plate |
| T10m | 10-pin connector, black, on telephone/telematics control unit |
| 346 | Earth connection (audio), in dash panel wiring harness |
| 501 | Screw connection -2- (30), on relay plate |
| 610 | Earth point (audio), below centre console, front |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A52 | Positive (+) connection -2- (30), in dash panel wiring harness |
| A74 | Connection (15a, fuse 5), in dash panel wiring harness |
| V32 | Positive (+) connection (30), in telephone wiring harness |
Wiring Diagram AUDI A4 2006 - Telephone/telematics control unit - aerials
| J526 | Telephone/telematics control unit |
| R50 | Navigation aerial (GPS) |
| R65 | Telephone aerial |
| R90 | Additional aerial for telematics |
Wiring Diagram AUDI A4 2006 - Telematics operating unit - telephone/telematics control unit - additional loudspeaker for telematics
| E264 | Telematics operating unit |
| E275 | Breakdown help button |
| E276 | Emergency call button |
| J234 | Airbag control unit |
| J526 | Telephone/telematics control unit |
| F4 | Reversing light switch |
| R91 | Additional loudspeaker for telematics |
| T2f | 2-pin connector, black, on additional loudspeaker for telematics |
| T17d | 17-pin connector, red, connector point, electronics box, plenum chamber |
| T17f | 17-pin connector, orange, connector point, A pillar, left |
| T17g | 17-pin connector, dark brown, connector point, A pillar, left |
| T46 | 46-pin connector, black, on telephone/telematics control unit |
| 44 | Earth point, lower part of left A pillar |
| 347 | Earth connection, in roof wiring harness |
| A87 | Connection (RF (reversing light)), in dash panel wiring harness |
| A125 | Connection (crash signal), in dash panel wiring harness |
| B270 | Connection (58s), in roof wiring harness |
Wiring Diagram AUDI A4 2006 - Telephone handset - telephone/telematics control unit
| R37 | Telephone handset |
| J526 | Telephone/telematics control unit |
| T46 | 46-pin connector, black, on telephone/telematics control unit |
Wiring Diagram AUDI A4 2006 - Control unit for voice control - telephone/telematics control unit - fax unit
| J507 | Control unit for voice control |
| J526 | Telephone/telematics control unit |
| R73 | Fax unit |
| T46 | 46-pin connector, black, on telephone/telematics control unit |
| 346 | Earth connection (audio), in dash panel wiring harness |
| V16 | Connection (screening), in telephone wiring harness |
| V44 | Connection (FAX), in communication wiring harness |
| * | Optional equipment |
Wiring Diagram AUDI A4 2006 - Control unit for voice control - telephone/telematics control unit - telephone microphone
| J401 | Navigation system with CD drive control unit |
| J402 | Operating electronics control unit, navigation |
| J507 | Control unit for voice control |
| J526 | Telephone/telematics control unit |
| R | Radio |
| R38 | Telephone microphone |
| T8 | 8-pin connector, black, radio connector III |
| T10l | 10-pin connector, red, radio connector IV |
| T10m | 10-pin connector, black, on telephone/telematics control unit |
| T17f | 17-pin connector, orange, connector point, A pillar, left |
| T20d | 20-pin connector, black, radio connector I |
| T20e | 20-pin connector, black, navigation system with CD drive control unit |
| A129 | Connection (muting), in dash panel wiring harness |
| V49 | Connection (low frequency, NF +), in communication wiring harness |
| V50 | Connection (low frequency, NF -), in communication wiring harness |
| * | Models with radio without navigation system |
| ** | Models with navigation system 'NS Low' |
| *** | Models with radio navigation system |
Wiring Diagram AUDI A4 2006 - Control unit for voice control - telephone/telematics control unit - CAN bus
| J104 | ABS with EDL control unit |
| J285 | Control unit with display in dash panel insert |
| J507 | Control unit for voice control |
| J526 | Telephone/telematics control unit |
| T16 | 16-pin connector, black, diagnostic connector |
| T17b | 17-pin connector, green, connector point, A pillar, left |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| T46 | 46-pin connector, black, on telephone/telematics control unit |
| 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 |
| * | As of model year 2003 no longer fitted |
| ** | Applicable from model year 2003 |
Wiring Diagram AUDI A4 2006 - Function selection switch II
| E272 | Function selection switch II |
| J285 | Control unit with display in dash panel insert |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 269 | Earth connection (sender earth) -1-, in dash panel wiring harness |
| A175 | Connection (58s), in dash panel wiring harness |
AUDI A4 2006 Control units overview
| 1 - | Heated windscreen control unit -J505- |
| q | Location → page 804/4 |
| 2 - | CD changer -R41- |
| q | Location → page 804/13 |
| 3 - | Fresh air blower control unit -J126- |
| q | Location ⇒ page → 804/7 |
| 4 - | Headlight range control, control unit -J431- |
| q | Location → page 804/7 |
| 5 - | Radio -R- |
| q | not for navigation system |
| q | Location → page 804/11 |
| 5 - | Navigation operating electronics control unit -J402- |
| q | for navigation system RNS-D only |
| q | Location → page 804/11 |
| 5 - | Control unit with display for radio and navigation system -J503- |
| q | for navigation system RNS-Low only |
| q | Location → page 804/13 |
| Audi A4 | Fitting Locations | No. 804 / 2 |
| 5 - | Navigation system with CD drive control unit -J401- |
| q | Location for navigation system NS-Low → page 804/12 |
| q | Location for navigation system RNS-E → page 804/12 |
| 6 - | Telephone and telematics control unit, telematics -J526- |
| q | Location → page 804/14 |
| 6 - | Language input control unit -J507- |
| q | Location → page 804/14 |
| 7 - | Steering column electronics control unit -J527- |
| q | Location → page 804/8 |
| 8 - | Front passenger side door control unit -J387- |
| q | Location → page 804/16 |
| 9 - | Display control unit in dash panel insert -J285- |
| q | Location → page 804/8 |
| 10 - | Airbag control unit -J234- |
| q | Location → page 804/9 |
| 11 - | Driver door control unit -J386- |
| q | Location → page 804/16 |
| Audi A4 | Fitting Locations | No. 804 / 3 |
| 12 - | Convenience system central control unit -J393- |
| q | Location → page 804/15 |
| 13 - | Onboard power supply control unit -J519- |
| q | Location → page 804/9 |
| 14 - | Motronic control unit -J220- |
| 14 - | Diesel direct injection system control unit -J248- |
| 14 - | Simos control unit -J361- |
| q | Location → page 804/4 |
| 15 - | Automatic gearbox control unit -J217- |
| q | not for models with multitronic® |
| q | Location → page 804/5 |
| 16 - | ABS control unit -J104- |
| q | Location → page 804/6 |
| 17 - | Automatic gearbox control unit -J217- |
| q | for models with multitronic® only |
| q | Location → page 804/5 |
| 18 - | Radiator fan control unit -J293- |
| q | Location → page 804/6 |
| Audi A4 | Fitting Locations | No. 804 / 4 |
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| Audi A4 | Fitting Locations | No. 804 / 15 |
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| Audi A4 | Fitting Locations | No. 804 / 16 |
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