Operation CHARM: Car repair manuals for everyone.

Navigation System







Navigation Connectors

Information Electronics Control Module 1 (J794)





1. Not assigned

2. Connection block with four connectors

3. MOST bus

4. FBAS input from TV Tuner (R78)

5. 4-pin multi-pin connector (T4al/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. GPS connection from the GPS antenna (R50)


Unlisted connector terminals are not used.

2 - Connection Block with Four Connectors

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





1. NF mute from preliminary setup for cell phone preparation

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

3. Wake UP to multimedia system control head

4. Not assigned

5. Not assigned

6. Res MU to multimedia system control head

7. Ring-break diagnostic cable


B - 12-Pin Connector (T12x)





5 FBAS wire (-) from rear view camera system control module (J772)
11 FBAS wire (+) from rear view camera system control module

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 (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 2012).

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
14 Res BT from multimedia system control head
15 Terminal 30
16 Ground (GND) to multimedia system control head

3 - MOST Bus





1. IN

2. OUT