Audi Workshop Service and Repair Manuals

Pin assignment for radio (MMI)

Radio -R- 1 -  Connection (AM/FM1/FM2) 2 -  Connection (DAB) from aerial amplifier 3 -R112- 3 -  Connection block with four multi-pin connectors 4 -  MOST bus   Note Contacts which are not listed are not used.

1 - Aerial connection (AM/FM1/FM2) A -  Contact 2 (AM/FM1) from roof aerial -R216- (radio aerial 2 -R93-) - normal roof  -  Contact 2 (AM/FM1) from aerial amplifier 2 -R111- (radio aerial 2 -R93-) - with roof spoiler B -  Contact 1 (FM2) from aerial amplifier -R24- (aerial -R11-) 3 - Connection block with four multi-pin connectors

A - Multi-pin connector, 8-pin (T8ag) 1 -  Loudspeaker (+), rear right 2 -  Loudspeaker (+), front right 3 -  Loudspeaker (+), front left 4 -  Loudspeaker (+), rear left 5 -  Loudspeaker (–), rear right 6 -  Loudspeaker (–), front right 7 -  Loudspeaker (–), front left 8 -  Loudspeaker (–), rear left

B - Multi-pin connector, 12-pin (T12) 17 -  NF in, left-side (low frequency) 18 -  NF in, earth (low frequency) 19 -  NF in, diag (low frequency) 21 -  NF diag (low frequency) 22 -  NF (–) (low frequency) from pre-fitted components for mobile phone installation 23 -  NF in, right-side (low frequency) 24 -  NF in, screen earth (low frequency) 27 -  NF screen earth (low frequency) 28 -  NF (+) (low frequency) from pre-fitted components for mobile phone installation

C - Multi-pin connector, 12-pin 29 -  Headphones output 1 (diag) 31 -  Headphones output 1/2 (diag) 34 -  Headphones output 2 (diag) 35 -  Headphones output 1 (left) 36 -  Headphones output 1 (earth) 37 -  Headphones output 1 (right) 38 -  Headphones output 2 (left) 39 -  Headphones output 2 (earth) 40 -  Headphones output 2 (right)

D - Multi-pin connector, 10-pin (T10ag) 9 -  Subwoofer -R211- 10 -  Centre loudspeaker -R208- 11 -  Open circuit diagnostic lead 13 -  Subwoofer -R211- 14 -  Centre loudspeaker -R208- 41 -  Terminal 31 42 -  Terminal 30

4 - MOST bus 1 -  Input 2 -  Output