Digital Sound System Control Module -J525-, Connector Views, W/Radio (8DN, 8DP, 8DS)

1. 38-Pin Connector -T38-/18-Pin Connector -T18i-

Courtesy of AUDI OF AMERICA, LLC

T18i (B)	Designation
1
2
3
4
5
6	Noise reduction microphone 3 R287(1)
7	Noise reduction microphone 3 R287(1)
8	Noise reduction microphone 4 R288(1)
9	Noise reduction microphone 4 R288(1)
10	Engine Control Module (ECM) J623 Subframe Mount Control Module J931
11	Terminal 31, to 397 Ground Connection 32 (in main wiring harness)(1)
12
13	Noise reduction microphone 2 R286(1)
14	Noise reduction microphone 2 R286(1)
15
16	Noise reduction microphone 1 R285(1)
17	Noise reduction microphone 1 R285(1)
18
(1) only for vehicles with noise cancellation ANC (EP1)

T38 (A)	Designation
1	Terminal 30, of fuse carrier 4 ST4 in Fuse Panel F S
2	Terminal 31, to 50 Ground Connection (in left luggage compartment)
3	Right Rear Bass Speaker R17 Right Rear Treble Speaker R16
4	Left Front Bass Speaker R21
5	Subwoofer R211
6
7	Left Front Midrange Speaker R103
8	Right Front Midrange Speaker R104
9	Right front speaker R3
10	Left front speaker R2
11	Right Front Bass Speaker R23
12	Right Front Bass Speaker R23
13	Left Rear Bass Speaker R15 Left Rear Treble Speaker R14
14	Left Rear Bass Speaker R15 Left Rear Treble Speaker R14
15	Right Rear Bass Speaker R17 Right Rear Treble Speaker R16
16	Left Front Bass Speaker R21
17	Subwoofer R211
18
19	Left Front Midrange Speaker R103
20	Right Front Midrange Speaker R104
21	Right front speaker R3
22	Left front speaker R2
23
24
25	Ringbreak Diagnosis Wire B444 OBD connection 1 (in main wiring harness)
26
27
28	Screen composition for internal microphone R74 in the microphone unit in front roof module R164
29	Internal microphone R74 in the microphone unit in front roof module R164
30	Internal microphone R74 in the microphone unit in front roof module R164
31	Center speaker R208
32	Center speaker R208
33	Left effects speaker R209
34	Left effects speaker R209
35
36
37	Right effects speaker R210
38	Right effects speaker R210