Wiring Diagram AUDI A4 2003 - Ignition/starter switch - control unit for headlight range control - fuses
C | Alternator |
D | Ignition/starter switch |
E1 | Lighting switch |
J285 | Control unit with display in dash panel insert |
J431 | Headlight range control, control unit |
S10 | Fuse in fuse box/relay plate |
S20 | Fuse in fuse box/relay plate |
S21 | Fuse in fuse box/relay plate |
T2 | 2-pin connector, black, engine compartment, right |
T10 | 10-pin connector, black, connector point, electronics box, plenum chamber |
T32a | 32-pin connector, green, on dash panel insert |
33 | Earth point, behind dash panel, right |
238 | Earth connection -1-, in interior wiring harness |
501 | Screw connection -2- (30), on relay plate |
A2 | Positive (+) connection (15), in dash panel wiring harness |
A17 | Connection (61), in dash panel wiring harness |
A32 | Positive (+) connection (30), in dash panel wiring harness |
A51 | Connection (56), in dash panel wiring harness |
* | Only applies to Lowline equipment |
** | Only applies to Highline equipment |
Wiring Diagram AUDI A4 2003 - Control unit for headlight range control - vehicle level senders
G76 | Vehicle level sender, rear left |
G78 | Vehicle level sender, front left |
J104 | ABS with EDL control unit |
J431 | Headlight range control, control unit |
T4s | 4-pin connector, black, for vehicle level sender, rear left |
T16 | 16-pin connector, black, diagnostic connector |
T17 | 17-pin connector, black, connector point, A pillar, left |
T17a | 17-pin connector, red, connector point, A pillar, left |
A133 | Connection (ABS impulses, left), in dash panel wiring harness |
A159 | Connection (L), in dash panel wiring harness |
Z20 | Connection in self-levelling suspension wiring harness |
Z21 | Positive (+) connection (x), in self-levelling suspension wiring harness |
Wiring Diagram AUDI A4 2003 - Control unit for headlight range control - left gas discharge (xenon) lamp - left headlight range control motor
J343 | Left gas discharge (xenon) lamp control unit |
J431 | Headlight range control, control unit |
J519 | Onboard power supply control unit |
L13 | Left gas discharge (xenon) lamp |
M1 | Side light bulb, left |
M5 | Turn signal bulb, front left |
M30 | Main beam bulb, left |
T17a | 17-pin connector, red, connector point, A pillar, left |
T23 | 23-pin connector, black, on onboard power supply control unit |
T32b | 32-pin connector, grey, on onboard power supply control unit |
V48 | Headlight range control motor, left |
26 | Earth point, on front apron |
179 | Earth connection, in left headlight wiring harness |
A6 | Positive (+) connection (left turn signal), in dash panel wiring harness |
A84 | Connection (58L), in dash panel wiring harness |
B167 | Connection (56b), in interior wiring harness |
E117 | Connection (56a, left), in dash panel wiring harness |
* | Only applies to Lowline equipment |
** | Only applies to Highline equipment |
*** | Only applies to models with automatic headlight switching / surround lighting |
Wiring Diagram AUDI A4 2003 - Control unit for headlight range control - right gas discharge (xenon) lamp - right headlight range control motor
J344 | Right gas discharge lamp control unit |
J431 | Headlight range control, control unit |
J519 | Onboard power supply control unit |
L14 | Right gas discharge lamp |
M3 | Side light bulb, right |
M7 | Turn signal bulb, front right |
M32 | Main beam bulb, right |
T17c | 17-pin connector, red, connector point, A pillar, right |
T23 | 23-pin connector, black, on onboard power supply control unit |
T32b | 32-pin connector, grey, on onboard power supply control unit |
V49 | Headlight range control motor, right |
43 | Earth point, lower part of right A pillar |
176 | Earth connection, in right headlight wiring harness |
A5 | Positive (+) connection (right turn signal), in dash panel wiring harness |
A85 | Connection (58R), in dash panel wiring harness |
E116 | Connection (56a, right), in dash panel wiring harness |
* | Only models with Low-Line equipment |
** | Only models with High-Line equipment |
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 |
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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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