Wiring Diagram AUDI A4 2004 - Voltage supply

D | Ignition/starter switch |
J402 | Navigation operating electronics control unit |
S239 | Fuse in fuse holder |
T8 | 8-pin connector, black, radio connector III |
T26 | 26-pin connector, black, on navigation operating electronics control unit |
346 | Earth connection (audio), in dash panel wiring harness |
501 | Screw connection 2 (30), on relay plate |
610 | Earth point (audio), front under centre console |
A2 | Positive connection (15), in dash panel wiring harness |
A21 | Connection (86s), in dash panel wiring harness |
A32 | Positive connection (30), in dash panel wiring harness |
A46 | Positive connection (30 - from radio), in dash panel wiring harness |
A57 | Positive connection 3 (30), in dash panel wiring harness |
* | With active loudspeaker |
** | With Bose loudspeaker |
Wiring Diagram AUDI A4 2004 - Navigation operating electronics control unit
F4 | Reversing light switch |
J104 | ABS control unit with EDL |
J393 | Convenience system central control unit |
J402 | Navigation operating electronics control unit |
T8 | 8-pin connector, black, radio connector III |
T17 | 17-pin connector, black, coupling station on left A-pillar |
T17d | 17-pin connector, red, coupling station on electronics box, plenum chamber |
T20d | 20-pin connector, black, radio connector I |
T20g | 20-pin connector, red, on convenience system central control unit (used to be connector 4) |
T26 | 26-pin connector, black, on navigation operating electronics control unit |
A87 | Connection (RL), in dash panel wiring harness |
A129 | Connection (muting), in dash panel wiring harness |
A133 | Connection (left ABS impulse), in dash panel wiring harness |
V49 | Connection (NF+), in communication wiring harness |
V50 | Connection (NF-), in communication wiring harness |
* | See applicable Current Flow Diagram: telephone |
** | For anti-theft alarm system only |
Wiring Diagram AUDI A4 2004 - Front active loudspeaker
J402 | Navigation operating electronics control unit |
R21 | Front left bass loudspeaker |
R23 | Front right bass loudspeaker |
R26 | Front left mid-range and treble loudspeaker |
R27 | Front right mid-range and treble loudspeaker |
R70 | Internal loudspeaker (middle loudspeaker) |
T8a | 8-connector, brown, radio connector II |
T20 | 20-pin connector, black, door A-pillar left |
T20a | 20-pin connector, black, door A-pillar right |
* | for models with active loudspeaker only |
Wiring Diagram AUDI A4 2004 - Rear active loudspeaker
J402 | Navigation operating electronics control unit |
R12 | Amplifier |
R15 | Rear left bass loudspeaker |
R17 | Rear right bass loudspeaker |
R34 | Rear left mid-range and treble loudspeaker |
R35 | Rear right mid-range and treble loudspeaker |
R100 | Bass loudspeaker |
T20b | 20-pin connector, black, door B-pillar left |
T20c | 20-pin connector, black, door B-pillar right |
T20d | 20-pin connector, black, radio connector I |
346 | Earth connection (audio), in dash panel wiring harness |
* | for models with active loudspeaker only |
Wiring Diagram AUDI A4 2004 - Front Bose loudspeaker
J402 | Navigation operating electronics control unit |
R12 | Amplifier |
R21 | Front left bass loudspeaker |
R23 | Front right bass loudspeaker |
R26 | Front left mid-range and treble loudspeaker |
R27 | Front right mid-range and treble loudspeaker |
R70 | Internal loudspeaker (middle loudspeaker) |
T20 | 20-pin connector, black, door A-pillar left |
T20a | 20-pin connector, black, door A-pillar right |
T20d | 20-pin connector, black, radio connector I |
133 | Earth connection, in loudspeaker wiring harness |
255 | Earth connection 1, in radio wiring harness |
346 | Earth connection (audio), in dash panel wiring harness |
V28 | Connection 1, in radio wiring harness |
* | for models with Bose sound system only |
** | applicable from November 2003 |
*** | applicable up to October 2003 |
Wiring Diagram AUDI A4 2004 - Rear Bose loudspeaker - internal microphone
J402 | Navigation operating electronics control unit |
R12 | Amplifier |
R15 | Rear left bass loudspeaker |
R17 | Rear right bass loudspeaker |
R34 | Rear left mid-range and treble loudspeaker |
R35 | Rear right mid-range and treble loudspeaker |
R74 | Internal microphone |
R100 | Bass loudspeaker |
T17g | 17-pin connector, dark brown, coupling station on left of A-pillar |
T20b | 20-pin connector, black, door B-pillar left |
T20c | 20-pin connector, black, door B-pillar right |
* | for models with Bose sound system only |
** | applicable from November 2003 |
Wiring Diagram AUDI A4 2004 - CD changer
J402 | Navigation operating electronics control unit |
R41 | CD changer |
T20d | 20-pin connector, black, radio connector I |
* | for models with CD changer only |
Wiring Diagram AUDI A4 2004 - Navigation operating electronics control unit - navigation system tuner for TV
J402 | Navigation operating electronics control unit |
J415 | Navigation system tuner for TV |
T11 | 11-pin connector, on navigation system tuner for TV |
T54 | 54-pin connector, black, on navigation system tuner for TV |
Wiring Diagram AUDI A4 2004 - Navigation operating electronics control unit - navigation system tuner for TV - aerial - navigation system interface
J393 | Convenience system central control unit |
J402 | Navigation operating electronics control unit |
J415 | Navigation system tuner for TV |
J515 | Aerial selection control unit |
R1 | Aerial connection |
R50 | Navigation system aerial |
R64 | Remote control receiver for auxiliary heating |
R94 | Navigation system interface |
T16i | 16-pin connector, brown, on convenience system central control unit (used to be connector 5) |
T26 | 26-pin connector, black, on navigation operating electronics control unit |
T54 | 54-pin connector, black, on navigation system tuner for TV |
346 | Earth connection (audio), in dash panel wiring harness |
A148 | Connection (navigation CAN bus, high), in dash panel wiring harness |
A149 | Connection (navigation CAN bus, low), in dash panel wiring harness |
* | For Avant models see applicable Current Flow Diagram: Avant models, rear |
** | for models without digital TV tuner, digital TV tuner ⇒ applicable Current Flow Diagram |
*** | for models with auxiliary heating only |
Wiring Diagram AUDI A4 2004 - Control unit with display in dash panel insert - navigation operating electronics control unit - navigation system interface - CAN bus
J104 | ABS control unit with EDL |
J285 | Control unit with display in dash panel insert |
J402 | Navigation operating electronics control unit |
J415 | Navigation system tuner for TV |
R94 | Navigation system interface |
T8 | 8-pin connector, black, radio connector III |
T16 | 16-pin connector, black, diagnostic connector |
T17b | 17-pin connector, green, coupling station on left of A-pillar |
T32 | 32-pin connector, blue, on dash panel insert |
T32a | 32-pin connector, green, on dash panel insert |
T54 | 54-pin connector, black, on navigation system tuner for TV |
346 | Earth connection (audio), in dash panel wiring harness |
A27 | Connection (speed signal), in dash panel wiring harness |
A159 | Connection (L), in dash panel wiring harness |
A175 | Connection (58s), 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 |
AUDI A4 2004 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 / 5 |
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Audi A4 | Fitting Locations | No. 804 / 6 |
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Audi A4 | Fitting Locations | No. 804 / 7 |
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Audi A4 | Fitting Locations | No. 804 / 8 |
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Audi A4 | Fitting Locations | No. 804 / 9 |
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Audi A4 | Fitting Locations | No. 804 / 10 |
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Audi A4 | Fitting Locations | No. 804 / 11 |
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Audi A4 | Fitting Locations | No. 804 / 12 |
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Audi A4 | Fitting Locations | No. 804 / 13 |
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Audi A4 | Fitting Locations | No. 804 / 14 |
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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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