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AUDI A4 2003 – CAN bus wires . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A4 2003 - CAN bus wires (drive train)

J...	Engine control units
J104	ABS with EDL control unit
J217	Automatic gearbox control unit
J234	Airbag control unit
T17	17-pin connector, black, connector point, A pillar, left
T17d	17-pin connector, red, connector point, electronics box, plenum chamber
A121	Connection (high bus), in dash panel wiring harness
A122	Connection (low bus), in dash panel wiring harness
D159	Connection (high bus), in engine compartment wiring harness
D160	Connection (low bus), in engine compartment wiring harness
*	Only models with automatic gearbox (multitronic)
**	Only models with five-speed automatic gearbox (AG5)

Wiring Diagram AUDI A4 2003 - CAN bus wires - control unit with display in dash panel insert

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J285	Control unit with display in dash panel insert
J527	Steering column electronics control unit
T16a	16-pin connector, black, on steering column electronics control unit
T32	32-pin connector, blue, on dash panel insert
T32a	32-pin connector, green, on dash panel insert
A121	Connection (high bus), in dash panel wiring harness
A122	Connection (low bus), 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
A178	Connection (infotainment CAN bus, high), in dash panel wiring harness
A179	Connection (infotainment CAN bus, low), in dash panel wiring harness

Wiring Diagram AUDI A4 2003 - CAN bus wires (convenience features)

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E87	Control and display unit for air conditioner/Climatronic
J...	Door control units
J364	Additional heater control unit
J393	Convenience system central control unit
J446	Parking aid control unit
J519	Vehicle voltage control unit
T10k	10-pin connector, white, connector point, A pillar, left
T16f	16-pin connector, brown, on parking aid control unit
T32b	32-pin connector, grey, on vehicle voltage control unit
A146	Connection (convenience CAN bus, high), in dash panel wiring harness
A147	Connection (convenience CAN bus, low), 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

Wiring Diagram AUDI A4 2003 - CAN bus wires (navigation and infotainment)

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J402	Operating electronics control unit, navigation
J415	Navigation/TV tuner
R94	Navigation interface
T12f	12-pin connector, black, under rear seat bench
T26	26-pin connector, black, on operating electronics control unit, navigation
A148	Connection (navigation CAN bus, high), in dash panel wiring harness
A149	Connection (navigation CAN bus, low), 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
*	Only models with radio navigation system
**	Only models with radio navigation system and TV tuner

Wiring Diagram AUDI A4 2003 - CAN bus wires (infotainment)

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J401	Navigation system with CD drive control unit
J507	Control unit for voice control
J526	Telephone/telematics control unit
R99	Chip card reader unit
T12d	12-pin connector, brown, near glove box
T20e	20-pin connector, black, navigation system with CD drive control unit
T46	46-pin connector, black, on telephone/telematics control unit
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 telephone/telematics (USA)
**	Optional equipment for models with navigation system

Wiring Diagram AUDI A4 2003 - CAN bus wires (infotainment)

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J402	Operating electronics control unit, navigation
R	Radio
T20d	20-pin connector, black, radio connector I
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 radio navigation system (Japan)