Wiring Diagram AUDI A4 2003 - CAN bus wires (drive train)
J... | Engine control units |
J104 | ABS with EDL control unit |
J217 | Automatic gearbox control unit |
J234 | Airbag control unit |
T17 | 17-pin connector, black, connector point, A pillar, left |
T17d | 17-pin connector, red, connector point, electronics box, plenum chamber |
A121 | Connection (high bus), in dash panel wiring harness |
A122 | Connection (low bus), in dash panel wiring harness |
D159 | Connection (high bus), in engine compartment wiring harness |
D160 | Connection (low bus), in engine compartment wiring harness |
* | Only models with automatic gearbox (multitronic) |
** | Only models with five-speed automatic gearbox (AG5) |
Wiring Diagram AUDI A4 2003 - CAN bus wires - control unit with display in dash panel insert
J285 | Control unit with display in dash panel insert |
J527 | Steering column electronics control unit |
T16a | 16-pin connector, black, on steering column electronics control unit |
T32 | 32-pin connector, blue, on dash panel insert |
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 |
A146 | Connection (convenience CAN bus, high), in dash panel wiring harness |
A147 | Connection (convenience CAN bus, low), 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 A4 2003 - CAN bus wires (convenience features)
E87 | Control and display unit for air conditioner/Climatronic |
J... | Door control units |
J364 | Additional heater control unit |
J393 | Convenience system central control unit |
J446 | Parking aid control unit |
J519 | Vehicle voltage control unit |
T10k | 10-pin connector, white, connector point, A pillar, left |
T16f | 16-pin connector, brown, on parking aid control unit |
T32b | 32-pin connector, grey, on vehicle voltage control unit |
A146 | Connection (convenience CAN bus, high), in dash panel wiring harness |
A147 | Connection (convenience CAN bus, low), 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 A4 2003 - CAN bus wires (navigation and infotainment)
J402 | Operating electronics control unit, navigation |
J415 | Navigation/TV tuner |
R94 | Navigation interface |
T12f | 12-pin connector, black, under rear seat bench |
T26 | 26-pin connector, black, on operating electronics control unit, navigation |
A148 | Connection (navigation CAN bus, high), in dash panel wiring harness |
A149 | Connection (navigation CAN bus, low), 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 |
* | Only models with radio navigation system |
** | Only models with radio navigation system and TV tuner |
Wiring Diagram AUDI A4 2003 - CAN bus wires (infotainment)
J401 | Navigation system with CD drive control unit |
J507 | Control unit for voice control |
J526 | Telephone/telematics control unit |
R99 | Chip card reader unit |
T12d | 12-pin connector, brown, near glove box |
T20e | 20-pin connector, black, navigation system with CD drive control unit |
T46 | 46-pin connector, black, on telephone/telematics control unit |
A178 | Connection (infotainment CAN bus, high), in dash panel wiring harness |
A179 | Connection (infotainment CAN bus, low), in dash panel wiring harness |
* | Only models with telephone/telematics (USA) |
** | Optional equipment for models with navigation system |
Wiring Diagram AUDI A4 2003 - CAN bus wires (infotainment)
J402 | Operating electronics control unit, navigation |
R | Radio |
T20d | 20-pin connector, black, radio connector I |
A178 | Connection (infotainment CAN bus, high), in dash panel wiring harness |
A179 | Connection (infotainment CAN bus, low), in dash panel wiring harness |
* | Only models with radio navigation system (Japan) |
AUDI A4 2003 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 |
|
|
Audi A4 | Fitting Locations | No. 804 / 5 |
|
|
Audi A4 | Fitting Locations | No. 804 / 6 |
|
|
|
Audi A4 | Fitting Locations | No. 804 / 7 |
|
|
|
Audi A4 | Fitting Locations | No. 804 / 8 |
|
|
|
Audi A4 | Fitting Locations | No. 804 / 9 |
|
|
|
Audi A4 | Fitting Locations | No. 804 / 10 |
|
|
|
Audi A4 | Fitting Locations | No. 804 / 11 |
|
|
Audi A4 | Fitting Locations | No. 804 / 12 |
|
|
Audi A4 | Fitting Locations | No. 804 / 13 |
|
|
Audi A4 | Fitting Locations | No. 804 / 14 |
|
|
Audi A4 | Fitting Locations | No. 804 / 15 |
|
|
Audi A4 | Fitting Locations | No. 804 / 16 |
|
|
|