Audi Workshop Service and Repair Manuals > A4 Mk3 > Vehicle electrics | Communication | Infotainment | Telephone system | Connectors for mobile phone pre-installation (MMI up to week 44/08)

Connectors for mobile phone pre-installation (MMI from week 45/08 onwards) > < Connectors for mobile phone pre-installation (CAN)

Connectors for mobile phone pre-installation (MMI up to week 44/08)

Connectors for mobile phone pre-installation (MMI up to week 44/08)

Telephone transmitter and receiver unit -R36-

A -	Multi-pin connector, 54-pin (T54a)

B -	Connection for aerial for Bluetooth -R152-

C -

MOST bus

Note

Contacts which are not listed are not used.

A91-10571

A - Multi-pin connector, 54-pin (T54a)

1 -	Terminal 30

2 -	Terminal 31

3 -	Switch-on signal to aerial amplifier for mobile telephone -R86-

11 -	Microphone input (+) from microphone unit in front roof module -R164- (telephone microphone -R38-)

12 -	Microphone input (–) from microphone unit in front roof module -R164- (telephone microphone -R38-)

14 -	Open circuit diagnostic lead

37 -	Terminal 30 to telephone bracket -R126-

39 -	Terminal 31 to telephone bracket -R126-

41 -	Terminal 30 to telephone bracket -R126-

42 -	Microphone output (+) to telephone bracket -R126-

43 -	Microphone output (–) to telephone bracket -R126-

44 -	Terminal 31 (screen earth) to telephone bracket -R126-

45 -	NF (+) (low frequency) from telephone bracket -R126-

46 -	NF (–) (low frequency) from telephone bracket -R126-

47 -	DIAG signal from telephone bracket -R126-

49 -	Data (+) to telephone bracket -R126-

50 -	Data (–) to telephone bracket -R126-

51 -	Data (+) from telephone bracket -R126-

52 -	Data (–) from telephone bracket -R126-

A91-11311

C - MOST bus

1 -

Input

2 -

Output

A91-11851

Vehicle electrics
Communication / Infotainment
Telephone system
Connectors for mobile phone pre-installation (MMI up to week 44/08)

Connectors for mobile phone pre-installation (MMI from week 45/08 onwards) > < Connectors for mobile phone pre-installation (CAN)