Audi Workshop Service and Repair Manuals > A4 Mk3 > Vehicle electrics | Communication | Infotainment | Telephone system | Connectors for Bluetooth car phone (up to week 44/08)

Connectors for Bluetooth car phone (up to week 44/08)

Telephone transmitter and receiver unit -R36-

A -	Connection for aerial for Bluetooth -R152-

B -

MOST bus

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

D -	Connection (GSM) from radio, telephone and navigation system aerial -R52- (roof aerial)

Note

Contacts which are not listed are not used.

B - MOST bus

1 -

Input

2 -

Output

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

1 -	Terminal 30

2 -	Terminal 31

3 -	Switch-on signal from telephone bracket -R126-

10 -	Terminal 31 (screen earth)

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

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