Wiring Diagram AUDI A4 2003 - Brake light switch - trailer detector control unit - fuse in fuse box
![AUDI A4 2003 — Trailer socket . Wiring diagrams, Pin Connector, Location Download PDF file](/images/pdf-80.jpg)
D | Ignition/starter switch |
F | Brake light switch |
J345 | Trailer detector control unit |
S14 | Fuse in fuse box/relay plate |
S227 | Fuse in fuse box |
86 | Earth connection -1-, in rear wiring harness |
501 | Screw connection -2- (30), on relay plate |
A2 | Positive (+) connection (15), in dash panel wiring harness |
A18 | Connection (54), in dash panel wiring harness |
A32 | Positive (+) connection (30), in dash panel wiring harness |
A57 | Positive (+) connection -3- (30), in dash panel wiring harness |
A98 | Positive (+) connection -4- (30), in dash panel wiring harness |
Wiring Diagram AUDI A4 2003 - Trailer detector control unit - terminal 30 fuse - trailer towing - trailer socket
E23 | Front and rear fog light switch |
F216 | Rear fog light cut-out, contact switch |
J345 | Trailer detector control unit |
J446 | Parking aid control unit |
J519 | Onboard power supply control unit |
L46 | Rear fog light bulb, left |
T32b | 32-pin connector, grey, on onboard power supply control unit |
S77 | Terminal 30 fuse, trailer towing |
U10 | Trailer socket |
86 | Earth connection -1-, in rear wiring harness |
A88 | Connection (NSL (rear fog light)), 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 |
* | Applies to Lowline equipment |
** | Applies to Highline equipment only |
*** | Applies to parking aid only |
AUDI A4 2003 Control units overview
1 - | Rear right door control unit -J389- |
q | Location → page 805/3 |
2 - | Trailer detector control unit -J345- |
q | Location → page 805/2 |
3 - | Parking aid control unit -J446- |
q | Location → page 805/2 |
4 - | Rear left door control unit -J388- |
q | Location ⇒ page → 805/3 |
Audi A4 | Fitting Locations | No. 805 / 2 |
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Audi A4 | Fitting Locations | No. 805 / 3 |
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