MMI Cell Phone Preparation Connectors

MMI Cell Phone Preparation Connectors

Information Electronics Control Module 1 (J794)





1. GSM connection from telephone antenna (R65)

2. Connection block with four connectors

3. MOST bus

4. FBAS input from TV tuner (R78)

5. 4-pin connector (T4am) to front information display control head (J685)

6. 4-pin connector (T4ap) for the external audio source connection (R199) / internet access control module (J666) (from MY 2012)

7. Not assigned

8. Not assigned


• Unlisted connector terminals are not used.

2 - Connection Block with Four Connectors

A - 8-Pin Multi-Pin Connector (T8ah)





1. Not assigned

2. Voltage supply to multimedia system control head (E380)

3. Wake UP to multimedia system control head

4. Not assigned

5. Switch-on signal for the cellular telephone amplifier (R86)

6. Res MU to multimedia system control head

7. Ring-break diagnostic cable


B - 12-Pin Connector (T12x)





8 Microphone IN (+) for the microphone unit in front roof module (R164) ( left front microphone (R140) )
9 Microphone IN (-) for the microphone unit in front roof module (left front microphone)

C - 12-Pin Connector (T12y)





All pins are connected to the external audio source connection (R199).

1. LF IN ground

2. Right LF IN

3. USB (+5V) not for internet access control module (J666) (from MY 2012)

4. USB (ground)

5. Not assigned

6. Detect not for internet access control module (from MY 2012)

7. Left LF IN

8. LF IN ground shielding

9. FBAS wire (+)

10. FBAS wire (-)

11. iPod data

12. iPod data


Following pins are also still connected with the internet access control module (from MY 12).

3 USB (+5 V)
4 USB (ground)
6 Detect

D - 8-Pin Connector (T16q)





10 Data from multimedia system control head
11 Data to the multimedia system control head
12 Terminal 31
13 Telephone baseplate (R126) DIAG signal
14 Res BT from multimedia system control head
15 Terminal 30
16 Ground for the multimedia system control head

3 - MOST Bus





1. IN

2. OUT