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"symphony” > < Radio "chorus” (up to week 21/04)

A4 Mk2

Radio “concert”/“chorus” (from week 22/04)
   
Radio “concert”/“chorus” (from week 22/04)
1 - Multi-pin connector IV, 10-pin, red (T10l)
2 - Multi-pin connector I, 20-pin, black (T20d)
3 - Fuse for unit
4 - Multi-pin connector III, 8-pin, black (T8)
5 - Multi-pin connector II, 8-pin, brown (T8a)
6 - Connection ZF (intermediate frequency) (yellow) to aerial selection control unit -J515- / left aerial module -R108-
7 - Connection HF (high frequency) (black) from aerial selection control unit -J515- / left aerial module -R108-

  Note
Contacts which are not listed are not used.
   
1 - Multi-pin connector IV, 10-pin, red (T10l)
1 - NF mute (low frequency) from telephone transmitter and receiver unit -R36- / pre-fitted components for mobile phone installation
3 - NF+ (low frequency) from telephone transmitter and receiver unit -R36- (not with navigation IV) / pre-fitted components for mobile phone installation
4 - NF– (low frequency) from telephone transmitter and receiver unit -R36- (not with navigation IV) / pre-fitted components for mobile phone installation
5 - NF+ (low frequency) from navigation system with CD drive control unit -J401- (only with navigation IV)
6 - NF– (low frequency) from navigation system with CD drive control unit -J401- (only with navigation IV)
7 - Navigation control wire from navigation system with CD drive control unit -J401- (only with navigation IV)
  A91-0079
2 - Multi-pin connector I, 20-pin, black (T20d)
1 - Signal (rear left) to amplifier -R12-
2 - Signal (rear right) to amplifier -R12-
3 - Signal earth to amplifier -R12-
4 - Signal (front left) to amplifier -R12- (only with BOSE)
5 - Signal (front right) to amplifier -R12- (only with BOSE)
6 - Switched positive to amplifier -R12-
7 - CAN Bus High (Infotainment)
10 - CD earth to CD changer -R41-
12 - CAN Bus Low (Infotainment)
13 - CD data input from CD changer -R41-
14 - CD data output to CD changer -R41-
15 - CD-CLK from CD changer -R41-
16 - Permanent live to CD changer -R41-
17 - Switched positive to CD changer -R41-
18 - Signal earth to CD changer -R41-
19 - Signal (left-side) from CD changer -R41-
20 - Signal (right-side) from CD changer -R41-
  A91-0079
4 - Multi-pin connector III, 8-pin, black (T8)
1 - BOSE coding to earth (only with BOSE)
2 - Anti-theft alarm earth from convenience system central control unit -J393-
3 - L-diagnosis
7 - Terminal 30
8 - Terminal 31
  A91-0079
5 - Multi-pin connector II, 8-pin, brown (T8a)
3 - Loudspeaker (+) (front right) (not with BOSE)
4 - Loudspeaker (–) (front right) (not with BOSE)
5 - Loudspeaker (+) (front left) (not with BOSE)
6 - Loudspeaker (–) (front left) (not with BOSE)
  A91-0079

"symphony” > < Radio "chorus” (up to week 21/04)