Digital Sound System Control Module - J525-, BOSE, THROUGH MY 2014

WARNING: This page is about a different car, the 2015 Audi A7 Quattro and 2014 Audi A7 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Digital Sound System Control Module - J525-

Courtesy of AUDI OF AMERICA, LLC

MOST bus
18-Pin Connector - T18-
38-Pin Connector - T38-

NOTE:

Unlisted connector terminals are not assigned.

Fig 2: 2 - MOST Bus

Courtesy of AUDI OF AMERICA, LLC

Input
Output

Fig 3: 2 - 18-pin connector (T18)

Courtesy of AUDI OF AMERICA, LLC

6 - Left Rear Microphone - R144- (+)

7 - Left Rear Microphone - R144- (-)

8 - Right Rear Microphone - R145- (+)

9 - Right Rear Microphone - R145- (-)

10 - Speed signal from Engine Control Module - J623- (+)

11 - Speed signal from Engine Control Module - J623- (-)

13 - Right Center Microphone - R143- (+)

14 - Right Center Microphone - R143- (-)

16 - Left Center Microphone - R142- (+)

17 - Left Center Microphone - R142- (-)

Fig 4: 3 - 38-Pin Connector - T38-

Courtesy of AUDI OF AMERICA, LLC

Terminal 30
Terminal 31
Right rear speaker (+)
Left Front Bass Speaker - R21- (+)
Subwoofer - R211- (-)
Not Assigned
Left Front Midrange Speaker - R103- (-)
Right Front Midrange Speaker - R104- (+)
Right Front Treble Speaker - R22- (-)
Left Front Treble Speaker - R20- (+)
Right Front Bass Speaker - R23- (-)
Right Front Bass Speaker - R23- (+)
Left rear speaker (+)
Left rear speaker (-)
Right rear speaker (-)
Left Front Bass Speaker - R21- (-)
Subwoofer - R211- (+)
Not Assigned
Left Front Midrange Speaker - R103- (+)
Right Front Midrange Speaker - R104- (-)
Right Front Treble Speaker - R22- (+)
Left Front Treble Speaker - R20- (-)
Not Assigned
Not Assigned
Ring-break Diagnostic Cable
Not Assigned
Not Assigned
Ground shielding from Microphone Unit In Front Roof Module - R164-, Interior Microphone - R74-
Microphone Unit in Front Roof Module - R164-, Interior Microphone - R74- (-)
Microphone Unit in Front Roof Module - R164-, Interior Microphone - R74- (+)
Center Speaker - R208- (+)
Center Speaker - R208- (-)
Left Effects Speaker - R209- (-)
Left Effects Speaker - R209- (+)
Not Assigned
Not Assigned
Right Effects Speaker - R210- (+)
Right Effects Speaker - R210- (-)