AUDI A3 2004 — Multi-function steering wheel . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A3 2004 - Fuses - operating unit in steering wheel - multi-function steering wheel control unit

D	Ignition/starter switch
E221	Operating unit in steering wheel
F138	Airbag coil connector, return spring with slip ring
J453	Multi-function steering wheel control unit
S5	Fuse in fuse box/relay plate
S240	Fuse in fuse box
S242	Fuse in fuse box
S326	Multi-function steering wheel fuse
T3l	3-pin connector, vehicle interior, in steering wheel
T5k	5-pin connector, yellow, vehicle interior, at steering column
T18	18-pin connector, on multi-function steering wheel control unit
285	Earth connection -7-, in interior wiring harness
A2	Positive (+) connection (15), in dash panel wiring harness
A46	Positive (+) connection (30 - from radio), in dash panel wiring harness
B135	Connection -1- (15a), in interior wiring harness
*	From July 2002 onwards
**	As of July 2002 no longer fitted

Wiring Diagram AUDI A3 2004 - Operating unit in steering wheel - airbag coil connector/return spring with slip ring - horn plate - dual tone horn relay - airbag igniter - driver's side - multi-function steering wheel control unit

D	Ignition/starter switch
E221	Operating unit in steering wheel
F138	Airbag coil connector, return spring with slip ring
H	Horn plate
H2	High tone horn
H7	Low tone horn
J4	Dual tone horn relay
N95	Airbag igniter, driver's side
J234	Airbag control unit
J453	Multi-function steering wheel control unit
T5a	5-pin connector, yellow, vehicle interior, at steering column
T5c	5-pin connector, yellow, vehicle interior, at steering column
T18	18-pin connector, on multi-function steering wheel control unit
277	Earth connection -3-, in interior wiring harness
280	Earth connection, in communication systems wiring harness
A72	Connection (71), in dash panel wiring harness
B138	Positive (+) connection (X), in interior wiring harness
	Short circuit bridge becomes effective when connector is unplugged

Wiring Diagram AUDI A3 2004 - Multi-function steering wheel control unit - automatic gearbox control unit - Tiptronic switch

F189	Tiptronic switch
J217	Automatic gearbox control unit
J453	Multi-function steering wheel control unit
R36	Telephone transmitter and receiver unit
R88	Multi-function steering wheel interface
T10e	10-pin connector, black, engine compartment, in plenum chamber
T18	18-pin connector, on multi-function steering wheel control unit
285	Earth connection -7-, in interior wiring harness
U3	Connection -1-, in automatic gearbox wiring harness
U5	Connection -2- (15), in automatic gearbox wiring harness
U6	Connection -2-, in automatic gearbox wiring harness
V15	Connection, in telephone wiring harness
V16	Connection (screening), in telephone wiring harness
*	Only models with 5-speed automatic gearbox
**	Only applies to telephone, as of model year 2002 no longer fitted
***	As of model year 2002 no longer fitted

Wiring Diagram AUDI A3 2004 - Combi-processor in dash panel insert - multi-function steering wheel control unit

J218	Combi-processor in dash panel insert
J453	Multi-function steering wheel control unit
T16	16-pin connector, black, centre console compartment (diagnostic connector)
T18	18-pin connector, on multi-function steering wheel control unit
T32	32-pin connector, blue, on dash panel insert
T32a	32-pin connector, green, on dash panel insert
277	Earth connection -3-, in interior wiring harness
A76	Connection (diagnosis wire K), in dash panel wiring harness
B145	Positive (+) connection (58b), in interior wiring harness
*	Only models with 5-speed automatic gearbox
**	As of model year 2002 no longer fitted

Wiring Diagram AUDI A3 2004 - Auto-check system - combi-processor in dash panel insert - radio - earth connections

J189	Auto-check system
J218	Combi-processor in dash panel insert
R	Radio
T20a	20-pin connector, black, on radio
T32b	32-pin connector, grey, on dash panel insert
11	Earth point, in battery box
30	Earth point -1-, next to relay plate
277	Earth connection -3-, in interior wiring harness
280	Earth connection, in communication systems wiring harness
285	Earth connection -7-, in interior 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 5-speed automatic gearbox
**	As of model year 2002 no longer fitted
***	Only models with driver information system