Pin Assignment MMI Basic Plus

Front Information Display Control Head Control Module J523 

Fig 1: Front Information Display Control Head Control Module -J523-

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A  - Antenna Amplifier 3 -R112- HF Connection (White)

B  - IF (yellow) connection to Antenna Amplifier 3 -R112-

C  - MOST Bus

D  - Connection Block With Four Multi-Pin Connectors

C - MOST Bus 

Fig 2: 2 - MOST Bus

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1. Input
2. Output

D - connection Block With Four Multipin Connectors 

A - 8-Pin Multi-Pin Connector (T8ab) 

Fig 3: A - 8-Pin Connector (T8k)

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1  - Wake UP to Multimedia System Control Head -E380-

4  - Res HU to the Multimedia System Control Head -E380-

5  - Res BT to the Multimedia System Control Head -E380-

8  - Ground (GND) to Front Information Display Control Head -J685-

B  - 12-Pin Connector (T12q)

Fig 4: A - 8-Pin Connector (T8k)

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1. Data to the Multimedia System Control Head -E380-
2. Not Assigned
3. Data (+) to Front Information Display Control Head -J685-
4. Data (-) to Front Information Display Control Head -J685-
5. Data from Multimedia System Control Head -E380-

C - 12-Pin Connector (T12r) 

Fig 5: A - 8-Pin Connector (T8k)

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5  - Data (-) from Front Information Display Control Head -J685-

7  - Ground to Multimedia System Control Head -E380-

11  - Data (+) from Front Information Display Control Head -J685-

D  - 8-Pin Connector (T16j)

Fig 6: A - 8-Pin Connector (T8k)

Courtesy of AUDI OF AMERICA, LLC

11  - LF mute wire from preliminary setup for cell phone preparation

12  - Terminal 31

13  - Power Supply to Front Information Display Control Head -J685-

14  - Ring-Break Diagnostic Cable

15  - Terminal 30

16  - Power Supply to Multimedia System Control Head -E380-