Audi Workshop Service and Repair Manuals

→ Connection for 26-pin connector -A-

Pin assignment:

•     1 -    Terminal 31
•     2 -    Loudspeaker (-)
•     3 -    Loudspeaker (+)
•     4 -    not used
•     5 -    Earth for operating unit
•     6 -    Button section 1 for operating unit
•     7 -    Button section 2 for operating unit
•     8 -    Operating unit lighting
•     9 -    not used
•     10 -    not used
•     11 -    not used
•     12 -    Telephone AF screen (not used)

•     13 -    Telephone AF (-)
•     14 -    Terminal 30
•     15 -    Terminal 15
•     16 -    Terminal 58
•     17 -    GALA signal
•     18 -    Enable signal to display
•     19 -    Clock signal to display
•     20 -    Data signal to display
•     21 -    AF mute
•     22 -    Enable signal from radio
•     23 -    Clock signal from radio
•     24 -    Data signal from radio
•     25 -    Telephone mute signal
•     26 -    Telephone AF (+)

→ Connection for 12-pin connector -B-

Pin assignment:

•     1 -    Screen
•     2 -    Data signal (RxD)
•     3 -    Data signal (TxD)
•     4 -    Control signal (RTS)
•     5 -    Control signal (CTS)
•     6 -    not used
•     7 -    AF language output signal (AF+)
•     8 -    AF language output signal (AF-)
•     9 -    AF screen
•     10 -    Mute signal
•     11 -    not used
•     12 -    not used