LMM Cable to Ground - Only with ECU Connected

So, after another error scan today, the errors reappeared.
Brake pedal sensor: implausible signal.
and G70 is still running against ground.

Now I've re-measured the cables from the G70.
The white/brown wire is connected to the brewing cable, which is connected to the ground.
Now I'm disconnecting the control unit, and look what happens.
The cables are no longer connected to each other.
"Now, I'm directly measuring at the control unit, and look what I found!"
Several pins are making contact with my pin on the white/brown wire.

Does it have to be this way, or is there a fault in the control unit?
Best regards,
Thilo