AUDI A3 2001 — Driver information system . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A3 2001 - Fuses - left and right twin filament bulb

D	Ignition/starter switch
E1	Light switch
E4	Headlight dipper/flasher switch
J124	Rear bulb monitoring device
L1	Left headlight twin filament bulb
L2	Right headlight twin filament bulb
S5	Fuse in relay plate fuse holder
S18	Fuse in relay plate fuse holder
S19	Fuse in relay plate fuse holder
S20	Fuse in relay plate fuse holder
S21	Fuse in relay plate fuse holder
T4j	4-pin connector, left headlight
T4l	4-pin connector, right headlight
280	Earth connection, in communications wiring harness
285	Earth connection 7, in interior wiring harness
A2	Positive connection (15), in dash panel wiring harness
A51	Connection (56), in dash panel wiring harness
A103	Connection 2 (56), in dash panel wiring harness
B135	Connection 1 (15a), in interior wiring harness
B142	Positive connection 2 (56a), in interior wiring harness

Wiring Diagram AUDI A3 2001 - Brake light - tail light - fuses

E1	Light switch
F	Brake light switch
J124	Rear bulb monitoring device
J508	Brake light suppression relay
M2	Right tail light bulb
M4	Left tail light bulb
M9	Left brake light bulb
M10	Right brake light bulb
M25	High level brake light bulb
S13	Fuse in relay plate fuse holder
S22	Fuse in relay plate fuse holder
S223	Fuse in fuse holder
T5h	5-pin connector, brown, A-pillar left, near relay plate
T8g	8-pin connector, brown, on left in luggage compartment
98	Earth connection, in rear lid wiring harness
238	Earth connection 1, in interior wiring harness
B131	Connection (54), in interior wiring harness
B143	Positive connection (58R), in interior wiring harness
B144	Positive connection (58L), in interior wiring harness
B185	Connection 2 (54), in interior wiring harness
*	for models with anti-lock brake system (ABS) MK20
**	for models with anti-lock brake system (ABS) MK60 only

Wiring Diagram AUDI A3 2001 - On-board computer with auto-check system - door contact switch - dash panel insert

F2	Driver door contact switch
F3	Front passenger door contact switch
J189	Auto-check system
J218	Combi-processor in dash panel insert
T5i	5-pin connector, black, A-pillar left, near relay plate
T10d	10-pin connector, brown, connector carrier on left of A-pillar
T10f	10-pin connector, brown, connector carrier on right of A-pillar
T32	32-pin connector, blue, on dash panel insert
T32a	32-pin connector, green, on dash panel insert
T32b	32-pin connector, grey, on dash panel insert
V94	Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system
W9	Left footwell light
W10	Right footwell light
W30	Driver side door warning lamp
W36	Front passenger side door warning lamp
205	Earth connection, in driver door wiring harness
206	Earth connection, in front passenger door wiring harness
269	Earth connection (sender earth) 1, in dash panel wiring harness
B155	Connection 2 (DCt), in interior wiring harness

Wiring Diagram AUDI A3 2001 - On-board computer with auto-check system - windscreen washer fluid level display - door contact switch

E91	Function selection switch
E92	Reset button
F10	Rear left door contact switch
F11	Rear right door contact switch
F77	Washer fluid warning contact
J189	Auto-check system
T4n	4-pin connector, black, in rear left door
T4o	4-pin connector, black, in rear right door
T5i	5-pin connector, black, A-pillar left, near relay plate
T10z	10-pin connector, green, connector carrier on left of B-pillar
T10ab	10-pin connector, green, connector carrier on right of B-pillar
T32b	32-pin connector, grey, on dash panel insert
W33	Rear left entry light
W34	Rear right entry light
W37	Rear left door warning lamp
W38	Rear right door warning lamp
269	Earth connection (sender earth) 1, in dash panel wiring harness
285	Earth connection 7, in interior wiring harness
*	only with 4-door models

Wiring Diagram AUDI A3 2001 - On-board computer with auto-check system - infotainment CAN bus - radio

J189	Auto-check system
J453	Multifunction steering wheel control unit
R	Radio
T18	18-pin connector, on multifunction steering wheel control unit
T20a	20-pin connector, black, on radio
T32b	32-pin connector, grey, on dash panel insert
A178	Connection (infotainment CAN bus, high), in dash panel wiring harness
A179	Connection (infotainment CAN bus, low), in dash panel wiring harness
*	from model year 2001, only with radio symphony
**	with multifunction steering wheel
***	from model year 2001, not with radio symphony, is dropped, from model year 2002