Digital Sound System Control Module - J525-

Fig 1: Digital Sound System Control Module - J525- Connector End View

Courtesy of AUDI OF AMERICA, LLC

1. MOST Bus
2. not installed
3. 38-Pin Connector -T38-

Connector No. 1, MOST Bus - 2-Pin 

Courtesy of AUDI OF AMERICA, LLC

1. Output
2. Input

Connector No. 2, Not Installed 

Not Installed (not used)

Connector No. 3, 38-Pin Connector - T38- 

Courtesy of AUDI OF AMERICA, LLC

1. Terminal 30
2. Terminal 31
3. Right Front Bass Speaker -R23- (+)
4. Left Front Bass Speaker -R21- (+)
5. Subwoofer -R211- (-)
6. Not Assigned
7. Left Rear Speaker (-)
8. Right Rear Speaker (+)
9. Not Assigned
10. Center Speaker -R208- (+)
11. Not Assigned
12. Not Assigned
13. Not Assigned
14. Not Assigned
15. Right Front Bass Speaker -R23- (-)
16. Left Front Bass Speaker -R21- (+)
17. Subwoofer -R211- (+)
18. Not Assigned
19. Left Rear Speaker (+)
20. Right Rear Speaker (-)
21. Not Assigned
22. Center Speaker -R208- (-)
23. Not Assigned
24. Not Assigned
25. Ring-break Diagnostic Cable
26. Not Assigned
27. Not Assigned
28. Ground shielding from Microphone Unit In Front Roof Module -R164-, Interior Microphone -R74-
29. Microphone Unit in Front Roof Module -R164-, Interior Microphone -R74- (-)
30. Microphone Unit in Front Roof Module -R164-, Interior Microphone -R74- (+)
31. Left Front Speaker (+)
32. Left Front Speaker (+)
33. Right Front Speaker (-)
34. Right Front Speaker (-)
35. Right Rear Speaker -R5- (+)
36. Right Rear Speaker -R5- (-)
37. Left Rear Speaker -R4- (+)
38. Left Rear Speaker -R4- (-)