audi Workshop Repair Guides

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Connectors at aerial amplifier, mobile telephone R86 > < Mobile telephone operating electronics control unit J412 up to MY 03
Mobile telephone operating electronics control unitJ412 as of MY 04
   
Mobile telephone operating electronics control unit -J412- as of MY 04
A - Aerial for Bluetooth -R152-
B - 54-pin connector
  Note!
Contacts not listed are not used.
54-pin connector
1 - Terminal 30
2 - Terminal 31
3 - “Mobile phone ON” signal (to aerial amplifier, mobile telephone -R86-)
8 - AF output (+) (to radio -R-)
9 - AF output (-) (to radio -R-)
11 - Microphone (+)
12 - Microphone (-)
16 - Mute (to navigation system)
17 - CAN bus High (infotainment)
18 - CAN bus Low (infotainment)
37 - Terminal 30 (to mobile phone bracket)
39 - Terminal 31 (to mobile phone bracket)
41 - Terminal 30 (to mobile phone bracket)
42 - Microphone output (+) (to mobile phone bracket)
43 - Microphone output (-) (to mobile phone bracket)
44 - Terminal 31 (screen earth)
45 - AF input (+) (from mobile phone bracket)
46 - AF input (-) (from mobile phone bracket)
47 - SNDREQ signal (from mobile phone bracket)
49 - Ser Tx (+) (to mobile phone bracket)
50 - Ser Tx (-) (to mobile phone bracket)
51 - Ser Rx (+) (from mobile phone bracket)
52 - Ser Rx (-) (from mobile phone bracket)
  A91-10026

Connectors at aerial amplifier, mobile telephone R86 > < Mobile telephone operating electronics control unit J412 up to MY 03