Audi Workshop Service and Repair Manuals

Pin assignment for Ready4Nav

Control unit 1 for information electronics -J794- 1 -  Connection (AM/FM1) from aerial amplifier -R24- on normal roof / aerial amplifier 2 -R111- with roof spoiler (radio aerial 2 -R93-) 2 -  Connection (DAB) from aerial amplifier 3 -R112- (digital radio aerial -R183-) 3 -  GPS connection from GPS aerial -R50- 4 -  Connection block with four multi-pin connectors 5 -  MOST bus 6 -  Multi-pin connector, 4-pin (T4ap) to connection for external audio sources -R199-/internet access control unit -J666- 7 -  Multi-pin connector, 4-pin (T4al) to display unit for front information display and operating unit control unit -J685- 8 -  Connection (FM2) from aerial amplifier -R24- (aerial -R11-)   Note Contacts which are not listed are not used. 4 - 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) 4 -  Microphone input (+) from microphone unit in front roof module -R164- (telephone microphone -R38-) 6 -  DIAG signal from telephone bracket -R126- 12 -  Microphone input (–) from microphone unit in front roof module -R164- (telephone microphone -R38-)

C - Multi-pin connector, 12-pin (T12y) All pins are connected to the connection for external audio sources -R199-. 1 -  NF in, earth (low frequency) 2 -  NF in, right-side (low frequency) 3 -  USB (+5 V) - not with internet access control unit -J666- 4 -  USB (earth) 5 -  iPod (ACC power) 6 -  Detect - not with internet access control unit -J666- 7 -  NF in, left-side (low frequency) 8 -  NF in, screen earth (low frequency) 9 -  FBAS wire (+) 10 -  FBAS wire (–) 11 -  iPod data 12 -  iPod data The following pins are also connected to the internet access control unit -J666-. 3 -  USB (+5 V) 4 -  USB (earth) 6 -  Detect

D - Multi-pin connector, 8-pin (T10ag) 9 -  Subwoofer -R211- 10 -  Centre loudspeaker -R208- 13 -  Subwoofer -R211- 14 -  Centre loudspeaker -R208- 17 -  Terminal 31 18 -  Terminal 30

E - Multi-pin connector, 12-pin (T12w) 7 -  Open circuit diagnostic lead 12 -  Switch-on signal for telephone bracket -R126-/aerial amplifier for mobile telephone -R86-

5 - MOST bus 1 -  Input 2 -  Output

6 - Multi-pin connector, 4-pin (T4ap) All pins are connected to the connection for external audio sources -R199-/internet access control unit. -J666-. 1 -  D (+) 2 -  iPod detected 3 -  D (–) 4 -  Earth

7 - Multi-pin connector, 4-pin (T4al) All pins are connected to the display unit for front information display and operating unit control unit -J685-. 1 -  LVDS (–) 2 -  LIN 3 -  LVDS (+) 4 -  Earth