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40 (16+12+12) pin QuadLock Fakra Head Unit / Car Stereo connector layout
40 (16+12+12) pin QuadLock Fakra Head Unit / Car Stereo connector
at the car stereo
p/n 4F0035769B, 4F0035769

16 pin A connector

Pin
Number		 Function
1
Wake UP to Multimedia System Control Head
4
Res HU to multimedia system control head
 
5
Res BT to multimedia system control head
 
6
Ground (GND) to multimedia system control head
 
11
NF mute from preliminary setup for cell phone preparation
 
12
Terminal 31
 
13
Voltage supply for the front information display control head
 
14
Ring-break diagnostic cable
 
15
Terminal 30
 
16
Voltage supply to Multimedia System Control Head
 

12 pin B connector

Pin
Number		 Function
1
Data to the multimedia system control head
3
Data (+) to Front Information Display Control Head
 
4
Data (-) to Front Information Display Control Head
 
5
Data from multimedia system control head
 

12 pin C connector

Pin
Number		 Function
5
Data (-) from Front Information Display Control Head
7
Ground (GND) to Multimedia Control Head
 
11
Data (+) from Front Information Display Control Head
 

 Following pins are also still connected with the internet access control module (from MY 13). 3 - USB (+5 V) 4 - USB (ground) 6 - Detect.

4 pin Head Unit LVDS shaped connector layout
4 pin Head Unit LVDS shaped connector
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Audi (2008-2016) A4, A6, S6 C6 4F CD Navigation Basic Unit visual pinout:click to enlarge
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