MMI Bang and Olufsen Sound System Connectors

MMI Bang and Olufsen Sound System Connectors

Digital Sound System Control Module (J525)





A MOST bus
B 18-pin connector (T18b)
C 32-pin connector (T32h)

• Unlisted connector terminals are not used.

A - MOST Bus





1. IN

2. OUT


B - 18-Pin Connector (T18b)





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 (interior microphone)
10 Microphone input 1 (-) from Microphone unit in front roof module (interior microphone)
17 Ring-break diagnostic cable

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





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 (-)
18 Left front midrange speaker (-)
19 Right front midrange speaker (-)
20 Right front treble speaker (-)
21 Left front treble speaker (-)
22 Right front bass speaker (-)
23 Left front bass speaker (R21) (+)
25 Subwoofer in rear shelf (R157) (+)
28 Left front bass speaker (-)
30 Subwoofer in rear shelf (-)