Battery discharges in stand

Hello together, my Mazda 3 BK (10/2006) pulls the battery empty in the stand. A rest current of about 170-200mA flows. Normal values are apparently around 20-30mA. I measured these values by hanging a multimeter between mass cable and minus pole, closing the car and waiting for about 10 minutes. I think that should have fallen asleep with all control units and sensors. To limit the consumer, I pulled all fuses. Only in the passenger compartment, where there are about Then in the engine compartment, where nothing happened. Only when I took out the bolted fuse 3 (“BTN”, “To protect different circuits”, the current fell to 0. I still don’t really know what it will secure. I then looked at the fuse box in the passenger compartment (Passenger Junction Box / PJB) and just pulled plugs. If I pull the big green plug (J-01), I was able to get the plug in. The measured current is also set to 0. This makes sense so far that it probably supplies the power supply for the board, and so that everything from it is controlled. If I only pull the blue plug (J-03), the value falls to approx. 80mA. Pulling all other plugs does not change the measurement. In other words, with only J-01 and J-03 connected I still measure 170-200mA. Even if all fuses are pulled on the PJB itself. I attach a PDF with the occupancy/wiring, the vo The car has no warning lights and I have not noticed any problems. The error memory is empty. My considerations/questions: I find it funny that I still measure 80mA with connected J-01. If I look at the pin assignment, only voltages arrive via the plug, but Ground comes only with J-03. But it is not connected. Should the PJB not be completely off and I don’t have any power at all. Because the current drops to 0, if I separate J-01, I can actually exclude everything that is not controlled by the PJB, can I? What can I test now? Can I narrow it down somehow? Thank you very much.