RADIO – Audi A4 2009 – SYSTEM WIRING DIAGRAMS

RADIO

MOST Data Bus Wiring Diagram, MMI 2 for Audi A4 2009

List of elements for MOST Data Bus Wiring Diagram, MMI 2 for Audi A4 2009:

• (a4 sedan: left rear of trunk)
• Basic
• Cd changer
• Data bus on board diagnostic interface (a4: behind center of dash)
• Digital radio
• Digital sound system control module (a4 avant: left rear of cargo area)
• Digital sound system control module (a4 avant: left rear of cargo area) (a4 sedan: left rear of trunk)
• Except premium
• External audio source connection
• Front information display control head control module (a4: behind glove box)
• High
• Lwl in
• Lwl out
• Navigation system w/ cd drive control module (a4: left side of trunk)
• Nca
• Premium
• Radio
• Satellite radio/ digital radio
• Telephone transceiver (a4: under front passenger's seat)
• Tv tuner (a4: left side of trunk)

MOST Data Bus Wiring Diagram, MMI 3 for Audi A4 2009

List of elements for MOST Data Bus Wiring Diagram, MMI 3 for Audi A4 2009:

• Cd changer/ dvd changer
• Data bus on board diagnostic interface (a4: behind center of dash)
• Digital sound system control module (a4 avant: left rear of cargo area) (a4 sedan: left rear of trunk)
• Except premium
• Information electronics control module 1
• Lwl in
• Lwl out
• Nca
• Premium
• Radio
• T2dg
• T2dk
• Tv tuner
• W/ premium
• W/ premium & standard

Multimedia Interface Wiring Diagram (1 of 2) for Audi A4 2009

List of elements for Multimedia Interface Wiring Diagram (1 of 2) for Audi A4 2009:

• (a4: left side of center tunnel) g687
• (a4: right side of center tunnel) g688
• (or nca)
• (w/o speaker phone)
• 18 pin connector t18a
• Computer data lines system
• Front information display control head (a4: behind glove box)
• Fuse 10a
• Fuse 5a
• Fuse 7.5a
• Fuse carrier
• Fuse carrier 2
• G687 (a4: left side of center tunnel)
• Hot at all times
• Information electronics control module 1
• Left microphone
• Luggage compartment relay/fuse carrier (a4: right side of luggage compt)
• Microphone unit
• Mmi basic
• Mmi high
• Most data bus circuit
• Multimedia control head
• Nca
• Passenger's side fuse panel (a4: behind right end of dash)
• Rear view camera system control module (if equipped) (right rear of luggage compt)
• Red
• Right microphone
• T12x
• T1o
• T1p
• T1s
• T1w
• T2di
• T32b
• T4al
• T4am
• T4ao
• T8ah
• T8ai
• T8ao
• Telephone baseplate (w/ speaker)
• Telephone baseplate (w/o speaker)
• Vehicle electric system control module (a4: under left side of dash) (s4: behind driver's storage compt)
• W/ speaker
• W/o speaker

Multimedia Interface Wiring Diagram (2 of 2) for Audi A4 2009

List of elements for Multimedia Interface Wiring Diagram (2 of 2) for Audi A4 2009:

• (or nca)
• 7a3/7a6
• 7d3/uf7
• Antenna amplifier 2 (sedan) (a4: right rear of roof)
• Antenna amplifier 3 (a4 sedan: left side of trunk) (a4 avant: left side of cargo area)
• Comfort system central control module (a4: right side of trunk)
• External audio source connection
• G61 (a4 sedan: left "c" pillar) (a4 avant: behind left quarterpanel)
• G62 (a4: right "c" pillar)
• Information electronics control module 1
• Navigation system antenna
• Nca
• Radio (if equipped)
• Radio, telephone & navigation system antenna (sedan)
• Red
• Satellite antenna
• T12y
• T1ac
• T1ae
• T1af
• T1ah
• T1ai
• T1i
• T1l
• T1m
• T1n
• T2dn
• T4ap
• Telephone antenna
• Tv tuner (if equipped) (a4: left side of trunk)

Radio Wiring Diagram, Basic Infotainment (1 of 2) for Audi A4 2009

List of elements for Radio Wiring Diagram, Basic Infotainment (1 of 2) for Audi A4 2009:

• 18 pin connector
• 7a3/uf0
• 7d3/uf7
• Antenna amplifier
• Computer data lines system
• External audio source connection (7a3/uf0)
• External audio source connection (7d3/uf7)
• Fuse 20a
• Fuse 5a
• Fuse carrier 2
• G61 (a4 sedan: left "c" pillar) (a4 avant: behind left quarterpanel)
• G687 (a4 avant & sedan: left side of center tunnel)
• G687 (a4: left side of center tunnel)
• G688 (a4 avant & sedan: right side of center tunnel)
• Hot at all times
• Nca
• Passenger's side fuse panel (a4: behind right end of dash)
• Radio
• Radio, telephone navigation system antenna (w/ roof antenna)
• T12a
• T12s
• T16l
• T18a
• T8k
• Telephone transceiver (a4: under front passenger's seat)
• W/ speaker phone
• W/o speaker phone

Radio Wiring Diagram, Basic Infotainment (2 of 2) for Audi A4 2009

List of elements for Radio Wiring Diagram, Basic Infotainment (2 of 2) for Audi A4 2009:

• Cd/dvd changer
• Computer data lines system
• Front information display control head control module (w/ radio) (a4: behind glove box)
• Fuse 5a
• Fuse carrier 2
• G687 (a4: left side of center tunnel)
• Hot at all times
• Left front mid-bass speaker
• Left front treble speaker
• Left rear mid/low range speaker
• Left rear treble speaker
• Most data bus circuit
• Nca
• Passenger's side fuse panel (a4: behind right end of dash)
• Right front mid-bass speaker
• Right front treble speaker
• Right rear mid/low range speaker
• Right rear treble speaker

Radio Wiring Diagram, MMI 2 Basic (1 of 2) for Audi A4 2009

List of elements for Radio Wiring Diagram, MMI 2 Basic (1 of 2) for Audi A4 2009:

• 18 pin connector (w/o speaker phone)
• Cd changer
• Computer data lines system
• Digital sound system control module (a4 avant: left rear of cargo area)
• External audio source connection (w/ mmi high)
• Front information display control head control module (w/o rear view camera)
• Fuse 30a
• Fuse 5a
• Fuse 7.5a
• Fuse carrier 2
• Fuse carrier 3
• G50 (a4: left side of luggage compt)
• G687 (a4 avant & sedan: left side of center tunnel)
• Hot at all times
• Left front mid-bass speaker
• Left front treble speaker
• Luggage compartment relay/fuse carrier (a4: right side of luggage compt)
• Most data bus circuit
• Nca
• Passenger's side fuse panel (a4: behind right end of dash)
• Rear view camera system control module
• Right front mid-bass speaker
• Right front treble speaker
• T20c
• T32h
• Tv tuner
• W/ mmi high

Radio Wiring Diagram, MMI 2 Basic (2 of 2) for Audi A4 2009

List of elements for Radio Wiring Diagram, MMI 2 Basic (2 of 2) for Audi A4 2009:

• Antenna amplifier 2 (a4: right rear of roof)
• Antenna amplifier 3 (a4 sedan: left side of trunk) (a4 avant: left side of cargo area)
• Computer data lines system
• Fuse 7.5a
• Fuse carrier 3
• G50 (a4: left side of luggage compt)
• G61 (a4 sedan: left "c" pillar) (a4 avant: behind left quarterpanel)
• G62 (a4: right "c" pillar)
• Hot at all times
• Left rear mid/low range speaker
• Left rear treble speaker
• Luggage compartment relay/fuse carrier (a4: right side of luggage compt)
• Most data bus circuit
• Navigation system w/ cd drive control module (left rear of luggage compt)
• Nca
• Radio
• Radio, telephone navigation system antenna (w/ roof antenna)
• Right rear mid/low range speaker
• Right rear treble speaker
• Satellite radio
• W/ speaker phone

Radio Wiring Diagram, MMI 2 Premium (1 of 3) for Audi A4 2009

List of elements for Radio Wiring Diagram, MMI 2 Premium (1 of 3) for Audi A4 2009:

• 18 pin connector (w/o speaker phone)
• Center mid/high range speaker
• Computer data lines system
• Digital sound system control module (a4 avant: left rear of cargo area) (a4 sedan: left rear of trunk)
• External audio source connection (7a3/7a6)
• Front information display control head control module (w/o rear view camera)
• Fuse 30a
• Fuse 7.5a
• Fuse carrier 3
• G50 (a4: left side of luggage compt)
• Hot at all times
• Inside microphone
• Left rear mid/low range speaker
• Left rear treble speaker
• Luggage compartment relay/fuse carrier (a4: right side of luggage compt)
• Microphone unit (a4: in front roof module)
• Most data bus circuit
• Nca
• Rear view camera system control module
• Right rear mid/low range speaker
• Right rear treble speaker
• T18a
• T18b
• T20c
• T32h
• Telephone microphone
• Telephone transceiver (a4: under front passenger's seat)
• Tv tuner (a4: left side of trunk)
• Voice control microphone
• W/ speaker phone
• W/o speaker phone

Radio Wiring Diagram, MMI 2 Premium (2 of 3) for Audi A4 2009

List of elements for Radio Wiring Diagram, MMI 2 Premium (2 of 3) for Audi A4 2009:

• Antenna amplifier 2 (a4: right rear of roof)
• Antenna amplifier 3 (a4 sedan: left side of trunk) (a4 avant: left side of cargo area)
• Computer data lines system
• Fuse 7.5a
• Fuse carrier 3
• G50 (a4: left side of luggage compt)
• G61 (a4 sedan: left "c" pillar) (a4 avant: behind left quarterpanel)
• G62 (a4: right "c" pillar)
• Hot at all times
• Luggage compartment relay/fuse carrier (a4: right side of luggage compt)
• Most data bus circuit
• Navigation system w/ cd drive control module (a4: left side of trunk)
• Nca
• Radio
• Radio, telephone navigation system antenna (w/ roof antenna)
• Satellite radio
• W/ speaker phone

Radio Wiring Diagram, MMI 2 Premium (3 of 3) for Audi A4 2009

List of elements for Radio Wiring Diagram, MMI 2 Premium (3 of 3) for Audi A4 2009:

• Cd changer
• Computer data lines system
• External audio source connection (w/ mmi high)
• Fuse 5a
• Fuse carrier 2
• G687 (a4: left side of center tunnel)
• Hot at all times
• Left front bass speaker
• Left front mid-bass speaker
• Left front treble speaker
• Left rear midrange speaker
• Most data bus circuit
• Nca
• Passenger's side fuse panel (a4: behind right end of dash)
• Right front bass speaker
• Right front midrange speaker
• Right front treble speaker
• Right rear midrange speaker
• Subwoofer
• W/ mmi high

Radio Wiring Diagram, MMI 2 Standard (1 of 3) for Audi A4 2009

List of elements for Radio Wiring Diagram, MMI 2 Standard (1 of 3) for Audi A4 2009:

• 18 pin connector
• Computer data lines system
• Digital sound system control module (a4 avant: left rear of cargo area) (a4 sedan: left rear of trunk)
• External audio source connection (7a3/7a6)
• Front information display control head control module (w/o rear view camera)
• Fuse 30a
• Fuse 7.5a
• Fuse carrier 3
• G50 (left side of luggage compt)
• Hot at all times
• Luggage compartment relay/fuse carrier (a4: right side of luggage compt)
• Microphone unit (a4: in front roof module)
• Most data bus circuit
• Nca
• Rear view camera system control module
• T18a
• T20c
• T54a
• Telephone microphone
• Telephone transceiver (a4: under front passenger's seat)
• Tv tuner (a4: left side of trunk)
• Voice control microphone
• W/ speaker phone
• W/o speaker phone

Radio Wiring Diagram, MMI 2 Standard (2 of 3) for Audi A4 2009

List of elements for Radio Wiring Diagram, MMI 2 Standard (2 of 3) for Audi A4 2009:

• Antenna amplifier 2
• Antenna amplifier 3
• Computer data lines system
• Fuse 7.5a
• Fuse carrier
• G50 (left side of luggage compt)
• G61 (a4 sedan: left "c" pillar) (a4 avant: behind left quarterpanel)
• G62 (a4: right "c" pillar)
• Hot at all times
• Luggage compartment relay/fuse carrier (a4: right side of luggage compt)
• Most data bus circuit
• Navigation system w/ cd drive control module (a4: left side of trunk)
• Nca
• Radio
• Radio, telephone navigation system antenna (w/ roof antenna)
• Satellite radio
• W/ speaker phone

Radio Wiring Diagram, MMI 2 Standard (3 of 3) for Audi A4 2009

List of elements for Radio Wiring Diagram, MMI 2 Standard (3 of 3) for Audi A4 2009:

• Cd changer
• Center mid/high range speaker
• Computer data lines system
• External audio source connection (w/ mmi high)
• Fuse 5a
• Fuse carrier 2
• G687 (left side of center tunnel)
• Hot at all times
• Left front mid-bass speaker
• Left front treble speaker
• Left rear mid/low range speaker
• Left rear treble speaker
• Most data bus circuit
• Nca
• Passenger's side fuse panel (under right side of dash)
• Right front mid-bass speaker
• Right front treble speaker
• Right rear mid/low range speaker
• Right rear treble speaker
• Subwoofer
• W/ mmi high

Radio Wiring Diagram, MMI 3 Basic (1 of 2) for Audi A4 2009

List of elements for Radio Wiring Diagram, MMI 3 Basic (1 of 2) for Audi A4 2009:

• 18-pin connector
• Antenna amplifier 3 (a4 sedan: left side of trunk) (a4 avant: left side of cargo area)
• Comfort system central control module (a4: right side of trunk)
• Computer data lines system
• Fuse 30a
• Fuse 7.5a
• Fuse carrier
• G50 (a4: left side of luggage compt)
• G61 (a4 sedan: left "c" pillar) (a4 avant: behind left quarterpanel)
• G62 (a4: right "c" pillar)
• Hot at all times
• Luggage compartment relay/fuse carrier (a4: right side of luggage compt)
• Most data bus circuit
• Nca
• Radio
• Right front mid-bass speaker
• Right front treble speaker
• Right rear mid/ low range speaker
• Right rear treble speaker
• T10ag
• T12w
• T18a
• T1i
• T1l
• T20c
• T2dn
• T2do
• T8ag
• Tv tuner (if equipped) (a4: left side of trunk)

Radio Wiring Diagram, MMI 3 Basic (2 of 2) for Audi A4 2009

List of elements for Radio Wiring Diagram, MMI 3 Basic (2 of 2) for Audi A4 2009:

• Antenna amplifier 2 (a4: right rear of roof)
• Cd/dvd changer
• Computer data lines system
• Digital radio antenna
• Fuse 5a
• Fuse carrier 2
• G687 (a4: left side of center tunnel)
• Hot at all times
• Information electronics control module 1
• Left front mid-bass speaker
• Left front treble speaker
• Left rear mid/ low range speaker
• Left rear treble speaker
• Most data bus circuit
• Navigation system antenna
• Nca
• Passenger's side fuse panel (a4: behind right end of dash)
• Radio, telephone navigation system antenna
• Satellite antenna
• T1ac
• T1ae
• T1af
• T1ah
• T1ai
• T1n
• T1p
• T1w
• Telephone antenna
• Telephone base plate
• W/ speaker phone

Radio Wiring Diagram, MMI 3 Premium (1 of 2) for Audi A4 2009

List of elements for Radio Wiring Diagram, MMI 3 Premium (1 of 2) for Audi A4 2009:

• (a4 avant & sedan: left side of luggage compt) g50
• Antenna amplifier 2 (a4: right rear of roof)
• Antenna amplifier 3 (a4 sedan: left side of trunk) (a4 avant: left side of cargo area)
• Cd/dvd changer
• Comfort system central control module (a4: right side of trunk)
• Computer data lines system
• Digital radio antenna
• Fuse 30a
• Fuse 5a
• Fuse 7.5a
• Fuse carrier
• Fuse carrier 2
• G50 (a4 avant & sedan: left side of luggage compt)
• G61 (a4 sedan: left "c" pillar) (a4 avant: behind left quarterpanel)
• G62 (a4: right "c" pillar)
• G687 (a4: left side of center tunnel)
• Hot at all times
• Information electronics control module 1
• Luggage compartment relay/fuse carrier (a4: right side of luggage compt)
• Most data bus circuit
• Navigation system antenna
• Nca
• Passenger's side fuse panel (a4: behind right end of dash)
• Radio
• Radio, telephone navigation system antenna
• Satellite antenna
• T10ag
• T1ac
• T1ae
• T1ah
• T1ai
• T1i
• T1l
• T1n
• T1p
• T1w
• T20c
• T2dg
• T2dn
• T2do
• Telephone antenna
• Telephone base plate
• Tv tuner (if equipped) (a4: left side of trunk)
• W/ speaker phone

Radio Wiring Diagram, MMI 3 Premium (2 of 2) for Audi A4 2009

List of elements for Radio Wiring Diagram, MMI 3 Premium (2 of 2) for Audi A4 2009:

• (a4 sedan: left rear of trunk)
• (a4: left side of luggage compt) g50
• Center mid/ high range speaker
• Computer data lines system
• Digital sound system control module (a4 avant: left rear of cargo area)
• Left front bass speaker
• Left front mid-bass speaker
• Left front treble speaker
• Left rear mid/ low range speaker
• Left rear midrange speaker
• Left rear treble speaker
• Microphone unit (a4: in front roof module)
• Most data bus circuit
• Nca
• Right front bass speaker
• Right front midrange speaker
• Right front treble speaker
• Right rear mid/ low range speaker
• Right rear midrange speaker
• Right rear treble speaker
• Subwoofer
• T18b
• T2dk
• T32h

Radio Wiring Diagram, MMI 3 Standard (1 of 2) for Audi A4 2009

List of elements for Radio Wiring Diagram, MMI 3 Standard (1 of 2) for Audi A4 2009:

• 18-pin connector
• Antenna amplifier 3 (a4 sedan: left side of trunk) (a4 avant: left side of cargo area)
• Comfort system central control module (a4: right side of trunk)
• Computer data lines system
• Fuse 30a
• Fuse 7.5a
• Fuse carrier
• G50 (a4: left side of luggage compt)
• G61 (a4 sedan: left "c" pillar) (a4 avant: behind left quarterpanel)
• G62 (a4: right "c" pillar)
• Hot at all times
• Luggage compartment relay/fuse carrier (a4: right side of luggage compt)
• Most data bus circuit
• Nca
• Radio
• Right front mid-bass speaker
• Right front treble speaker
• Right rear mid/ low range speaker
• Right rear treble speaker
• T10ag
• T12w
• T18a
• T1i
• T1l
• T20c
• T2dg
• T2dn
• T2do
• T8ag
• Tv tuner (if equipped) (a4: left side of trunk)

Radio Wiring Diagram, MMI 3 Standard (2 of 2) for Audi A4 2009

List of elements for Radio Wiring Diagram, MMI 3 Standard (2 of 2) for Audi A4 2009:

• Antenna amplifier 2 (a4: right rear of roof)
• Cd/dvd changer
• Computer data lines system
• Digital radio antenna
• Fuse 5a
• Fuse carrier 2
• G687 (a4: left side of center tunnel)
• Hot at all times
• Information electronics control module 1
• Left front mid-bass speaker
• Left front treble speaker
• Left rear mid/ low range speaker
• Left rear treble speaker
• Most data bus circuit
• Navigation system antenna
• Nca
• Passenger's side fuse panel (a4: behind right end of dash)
• Radio, telephone navigation system antenna
• Satellite antenna
• T1ac
• T1ae
• T1af
• T1ah
• T1ai
• T1n
• T1p
• T1w
• Telephone antenna
• Telephone base plate
• W/ speaker phone

Radio Wiring Diagram, Premium Infotainment (1 of 2) for Audi A4 2009

List of elements for Radio Wiring Diagram, Premium Infotainment (1 of 2) for Audi A4 2009:

• 18 pin connector
• 7a3/uf0
• 7d3/uf7
• Antenna amplifier
• Computer data lines system
• External audio source connection (7a3/uf0)
• External audio source connection (7d3/uf7)
• Fuse 20a
• Fuse 5a
• Fuse carrier
• G61 (a4 sedan: left "c" pillar) (a4 avant: behind left quarterpanel)
• G654 (a4: top of right "d" pillar)
• G687 (a4: left side of center tunnel)
• G688 (a4: right side of center tunnel)
• Hot at all times
• Nca
• Passenger's side fuse panel (a4: behind right end of dash)
• Radio
• Radio, telephone navigation system antenna (w/ roof antenna)
• T12a
• T12s
• T16l
• T18a
• T8k
• Telephone amplifier (w/ telephone amplifier)
• Telephone baseplate (w/ preparation & speaker phone)
• Telephone transceiver (a4: under front passenger's seat)
• W/ preperation & speaker phone
• W/ speaker phone
• W/ telephone amplifier
• W/o speaker phone

Radio Wiring Diagram, Premium Infotainment (2 of 2) for Audi A4 2009

List of elements for Radio Wiring Diagram, Premium Infotainment (2 of 2) for Audi A4 2009:

• Center mid/high range speaker
• Computer data lines system
• Digital sound system control module
• Front information display control head (w/ radio concert) (center of dash)
• Fuse 30a
• Fuse carrier 3
• G50 (a4: left side of luggage compt)
• Hot at all times
• Inside microphone
• Left front bass speaker
• Left front mid-bass speaker
• Left front treble speaker
• Left rear mid/low range speaker
• Left rear midrange speaker
• Left rear treble speaker
• Luggage compartment relay/fuse carrier (right side of luggage compt)
• Microphone unit
• Pnk
• Radio
• Red
• Right front bass speaker
• Right front midrange speaker
• Right front treble speaker
• Right rear mid/low range speaker
• Right rear midrange speaker
• Right rear treble speaker
• Subwoofer
• T10v
• T18b
• T32h
• Telephone microphone

Radio Wiring Diagram, Standard Infotainment (1 of 2) for Audi A4 2009

List of elements for Radio Wiring Diagram, Standard Infotainment (1 of 2) for Audi A4 2009:

• 18 pin connector
• 7a3/uf0
• 7d3/uf7
• Antenna amplifier
• Computer data lines system
• External audio source connection (7a3/uf0)
• External audio source connection (7d3/uf7)
• Fuse 20a
• Fuse 5a
• Fuse carrier 2
• G61 (on left "c" pillar)
• G654 (a4: top of right "d" pillar)
• G687 (a4: left side of center tunnel)
• G688 (a4: right side of center tunnel)
• Hot at all times
• Nca
• Passenger's side fuse panel (a4: behind right end of dash)
• Radio
• Radio,telephone navigation system antenna (w/ roof antenna)
• T12a
• T12s
• T16l
• T18a
• T8k
• Telephone amplifier (w/ telephone amplifier)
• Telephone baseplate (w/ preparation & speaker phone)
• Telephone transceiver (a4: under front passenger's seat)
• W/ preparation & speaker phone
• W/ speaker phone
• W/ telephone amplifier
• W/o speaker phone

Radio Wiring Diagram, Standard Infotainment (2 of 2) for Audi A4 2009

List of elements for Radio Wiring Diagram, Standard Infotainment (2 of 2) for Audi A4 2009:

• Center mid/high range speaker
• Computer data lines system
• Digital sound system control module (a4 avant: left rear of cargo area (a4 sedan: left rear of trunk)
• Front information display control head control module (center of dash)
• Fuse 30a
• Fuse carrier 3
• G50 (a4: left side of luggage compt)
• Hot at all times
• Left front mid-bass speaker
• Left front treble speaker
• Left rear mid/low range speaker
• Left rear treble speaker
• Luggage compartment relay/fuse carrier (a4: right side of luggage compt)
• Pnk
• Radio
• Red
• Right front mid-bass speaker
• Right front treble speaker
• Right rear mid/low range speaker
• Right rear treble speaker
• Subwoofer
• T10v