Sound System Connector Assignments, Bang & OLUFSEN, MMI

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Digital Sound System Control Module J525

Fig 1: Digital Sound System Control Module -J525-

Courtesy of AUDI OF AMERICA, LLC

A - MOST Bus

B - 18-Pin Connector (T18b)

C - 32-Pin Connector (T32h)

NOTE:

Unlisted Connector Terminals Are Not Assigned.

A - MOST Bus

Fig 2: 2 - MOST Bus

Courtesy of AUDI OF AMERICA, LLC

Input
Output

B - Black 18-Pin Connector (T18b)

Fig 3: 18-Pin Connector

Courtesy of AUDI OF AMERICA, LLC

1 - Microphone input 1 (+) from Microphone Unit In Front Roof Module -R164- (Interior Microphone -R74-)

2 - Microphone input 1 (Ground Shielding) from Microphone Unit In Front Roof Module -R164- (Interior Microphone -R74-)

3 - Microphone Input 2 (+) from Microphone Unit in Front Roof Module -R164- (Speech Recognition System Microphone -R206-), through 11 / 03 / 2008

4 - LF (+) cell phone preparation preliminary setup / Japan navigation through 10 / 27 / 2008

6 - Right LF-In from External Audio Source Connection -R199- through 10 / 27 / 2008

7 - Left LF-In from External Audio Source Connection -R199- through 10 / 27 / 2008

10 - Microphone input 1 (-) from Microphone Unit In Front Roof Module -R164- (Interior Microphone -R74-)

11 - Microphone Input 2 (ground shielding) from Microphone Unit in Front Roof Module -R164- (Speech Recognition System Microphone -R206-), through 11 / 03 / 2008

12 - Microphone Input 2 (-) from Microphone Unit in Front Roof Module -R164- (Speech Recognition System Microphone -R206-), through 11 / 03 / 2008

13 - LF (-) cell phone preparation preliminary setup / Japan navigation through 10 / 27 / 2008

15 - Right LF-In ground from External Audio Source Connection -R199- through 10 / 27 / 2008

16 - Left LF-In ground from External Audio Source Connection -R199- through 10 / 27 / 2008

17 - Ring-break Diagnostic Cable

C - 32-Pin Multi-Pin Connector (T32h)

Fig 4: B - Black 32-Pin Connector (T32h)

Courtesy of AUDI OF AMERICA, LLC

1 - Terminal 30

2 - Terminal 31

3 - Left rear speaker (+)

4 - Right rear speaker (+)

5 - Center Mid-Treble Speaker -R158- (+)

6 - Left front speaker (+)

7 - Right front speaker (+)

8 - Left Rear Midrange Speaker -R105- (+)

9 - Right Rear Midrange Speaker -R106- (+)

10 - Right Front Bass Speaker -R23- (+)

15 - Left rear speaker (-)

16 - Right rear speaker (-)

17 - Center Mid-Treble Speaker -R158- (-)

18 - Left front speaker (-)

19 - Right front speaker (-)

20 - Left Rear Midrange Speaker -R105- (-)

21 - Right Rear Midrange Speaker -R106- (-)

22 - Right Front Bass Speaker -R23- (-)

23 - Left Front Bass Speaker -R21- (+)

25 - Subwoofer in Rear Shelf -R157- (+)

28 - Left Front Bass Speaker -R21- (-)

30 - Subwoofer in Rear Shelf -R157- (-)