A1466 820-00165 keyboard change EN to DE F-Keys not working correctly

[mbcontrol]

Hello, i changed the Keyboard on a A1466 from english to german Layout.
Everything works but the Function-Keys are not working correctly.
The Functions like Volume, Keyboardbacklight brightness, Display brightness etc. are not working - with or without Fn it doesn't matter.

I did SMC-Reset and PRAM Reset. A external USB-Keyboard works correctly. Only the new internal Keyboard have the problem.

Must i change the BIOS or something else?

 

[2informaticos]

Posibbly bad contact on a keyboard connector pin.
The new keyboard may be also bad.
Test with the old keyboard.