Page 28 of 82
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"Concert II" and "Symphony II", Multi-pin
connector terminal assignments
Note:
Terminals which are not listed are
vacant/unassigned.
Multi-pin connector I, 20-pin - black
1 - Line output - left rear
2 - Line output - right rear
3 - Line output, Ground (GND)
4 - Line output - left front
5 - Line output - right front
6 - Switched positive for power amplifier
7 - CAN Bus - High (Infotainment)
10 - Ground (GND) (CD changer)
12 - CAN Bus - Low (Infotainment)
13 - CD bus data input (CD changer)
14 - CD bus data output (CD changer)
15 - CD clock (CD changer)
16 - Battery positive B+ (CD changer)
Audi A4 Sedan 2002-2004, Audi A4 Avant 2002-2004, Audi A4 Cabriolet 2003-2004 - Communication
Page 29 of 82
Downloaded from www.Manualslib.com manuals search engine 17 - Switched positive for CD changer
18 - Ground (GND) Line output (CD changer)
19 - Line output - left (CD changer)
20 - Line output - right (CD changer)
Audi A4 Sedan 2002-2004, Audi A4 Avant 2002-2004, Audi A4 Cabriolet 2003-2004 - Communication
Page 33 of 82
Downloaded from www.Manualslib.com manuals search engine 91-29
6 -
Rear Bass Speakers
In lower rear door trim
7 -
Rear Midrange Speakers In upper rear door trim
8 -
Bass Loudspeaker Below rear shelf
9 -
Center Mid/High Range Loudspeaker In instrument panel
10 -
CD Changer Unit -R41- OptionalIn glove compartment
Audi A4 Sedan 2002-2004, Audi A4 Avant 2002-2004, Audi A4 Cabriolet 2003-2004 - Communication
Page 35 of 82
Downloaded from www.Manualslib.com manuals search engine 91-31
7 -
Front Midrange Speakers
In upper front door trim
8 -
Rear Bass Speakers In lower rear door trim
9 -
Rear Midrange Speakers In upper rear door trim
10 -
Bass Loudspeaker Below rear shelf
11 -
Center Mid/High Range Loudspeaker In instrument panel
12 -
CD Changer Unit -R41- OptionalIn glove compartment
Audi A4 Sedan 2002-2004, Audi A4 Avant 2002-2004, Audi A4 Cabriolet 2003-2004 - Communication
Page 36 of 82
Downloaded from www.Manualslib.com manuals search engine 91-32
"Concert II" and "Symphony II" radio systems
with "BOSE sound system", Multi-pin
connector terminal assignments
Note:
Terminals which are not listed are
vacant/unassigned.
Multi-pin connector I, 20-pin - black
1 - Line output - left rear
2 - Line output - right rear
3 - Line output, Ground (GND)
4 - Line output - left front
5 - Line output - right front
6 - Switched positive for BOSE power amplifier7 - CAN Bus - High (Infotainment)
10 - Ground (GND) (CD changer)
12 - CAN Bus - Low (Infotainment)
13 - CD bus data input (CD changer)
14 - CD bus data output (CD changer)
15 - CD clock (CD changer)
16 - Battery positive B+ (CD changer)
Audi A4 Sedan 2002-2004, Audi A4 Avant 2002-2004, Audi A4 Cabriolet 2003-2004 - Communication
Page 37 of 82
Downloaded from www.Manualslib.com manuals search engine 17 - Switched positive for CD changer
18 - Ground (GND) line output (CD changer)
19 - Line output - left (CD changer)
20 - Line output - right (CD changer)
Audi A4 Sedan 2002-2004, Audi A4 Avant 2002-2004, Audi A4 Cabriolet 2003-2004 - Communication
Page 44 of 82
Downloaded from www.Manualslib.com manuals search engine 91-37
7 -
Rear Midrange Speakers
In upper rear door trim
8 -
Rear Bass Speakers In lower rear door trim
9 -
Bass Loudspeaker Under rear parcel shelf
10 -
Center Mid/High Range Loudspeaker In instrument panel
11 -
CD Changer Unit In glove compartment
12 -
Satellite Radio In left rear luggage compartment
13 -
Satellite Tuner Antenna On roofAlso for Telematics and Navigation
Audi A4 Sedan 2002-2004, Audi A4 Avant 2002-2004, Audi A4 Cabriolet 2003-2004 - Communication
Page 46 of 82
Downloaded from www.Manualslib.com manuals search engine 91-39
9 -
Rear Midrange Speakers
In upper rear door trim
10 -
Rear Bass Speakers In lower rear door trim
11 -
Bass Loudspeaker Under rear parcel shelf
12 -
Center Mid/High Range Loudspeaker In instrument panel
13 -
CD Changer Unit In glove compartment
14 -
Satellite Radio In left rear luggage compartment
15 -
Satellite Tuner Antenna On roofAlso for Telematics and Navigation
Audi A4 Sedan 2002-2004, Audi A4 Avant 2002-2004, Audi A4 Cabriolet 2003-2004 - Communication
