Audi Workshop Service and Repair Manuals > A4 Mk3 > Vehicle electrics | Communication | Infotainment | Sound systems | Connectors for sound system basic plus (MMI up to week 44/08)

Connectors for sound system Standard (CAN) > < Sound systems - layout

Connectors for sound system basic plus (MMI up to week 44/08)

Connectors for sound system basic plus (MMI up to week 44/08)

Digital sound package control unit -J525-

A -

MOST bus

B -	Multi-pin connector, 32-pin (T32h)

Note

Contacts which are not listed are not used.

A91-10004

A - MOST bus

1 -

Input

2 -

Output

A91-11851

B - Multi-pin connector, 32-pin (T32h)

1 -	Terminal 30

2 -	Terminal 31

3 -	Front left loudspeaker (+)

4 -	Front right loudspeaker (+)

6 -	Rear left loudspeaker (+)

7 -	Rear right loudspeaker (+)

15 -	Front left loudspeaker (–)

16 -	Front right loudspeaker (–)

18 -	Rear left loudspeaker (–)

19 -	Rear right loudspeaker (–)

24 -	NF in, left-side (low frequency) from connection for external audio sources -R199-

25 -	NF (+) (low frequency) from pre-fitted components for mobile phone installation/Japan nav

26 -	NF in, right-side (low frequency) from connection for external audio sources -R199-

27 -	Open circuit diagnostic lead

29 -	NF in, earth, left-side (low frequency) from connection for external audio sources -R199-

30 -	NF (–) (low frequency) from pre-fitted components for mobile phone installation/Japan nav

31 -	NF in, earth, right-side (low frequency) from connection for external audio sources -R199-

A91-0851

Vehicle electrics
Communication / Infotainment
Sound systems
Connectors for sound system basic plus (MMI up to week 44/08)

Connectors for sound system Standard (CAN) > < Sound systems - layout