Sound System Connector Assignments, Bang & OLUFSEN, MMI

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Digital Sound System Control Module -J525-

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

A - MOST bus

B - 18-pin connector (T18b)

C - 32-pin connector (T32h)

NOTE:

Unlisted connector terminals are not assigned.

A - MOST Bus

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Output
Input

B - 18-pin connector (T18b)

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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-)

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

17 - Ring-break Diagnostic Cable

C - 32-pin multi-pin connector (T32h)

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1 - Terminal 30

2 - Terminal 31

3 - Left rear speaker (+)

4 - Right rear speaker (+)

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

6 - Left Front Midrange Speaker -R103- (+)

7 - Right Front Midrange Speaker -R104- (+)

8 - Right Front Treble Speaker -R22- (+)

9 - Left Front Treble Speaker -R20- (+)

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

15 - Left rear speaker (-)

16 - Right rear speaker (-)

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

18 - Left Front Midrange Speaker -R103- (-)

19 - Right Front Midrange Speaker -R104- (-)

20 - Right Front Treble Speaker -R22- (-)

21 - Left Front Treble Speaker -R20- (-)

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- (-)