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 36 of 82
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"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 48 of 82
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6 -
Radio system antenna
7 -
Antenna amplifier
8 -
Speakers
9 -
Radio
10 -
CAN Bus (Infotainment)
11 -
CD Changer Unit
In glove compartment
12 -
Telephone/Telematics Control Module Under front passenger seat
Audi A4 Sedan 2002-2004, Audi A4 Avant 2002-2004, Audi A4 Cabriolet 2003-2004 - Communication
Page 50 of 82
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Multi-pin connector assignments on Satellite
Radio -R146-
Note:
Terminals which are not listed are
vacant/unassigned.
A - Multi-pin connector, 8-pin
B - Multi-pin connector, 8-pin
C - Connection - Satellite Tuner Antenna (brown) 1 - CAN-Bus High (Infotainment)
2 - CAN-Bus Low (Infotainment)
3 - CD-IN L (CD Changer Unit)
4 - CD-IN R (CD Changer Unit)
5 - NF - Ground (GND) (Radio)
6 - NF - left (Radio)
7 - NF - right (Radio)
8 - CD Ground (GND) (CD Changer Unit)
1 - Terminal 30 (B+)
2 - Terminal 31 (GND)
Audi A4 Sedan 2002-2004, Audi A4 Avant 2002-2004, Audi A4 Cabriolet 2003-2004 - Communication