Heya!

I've bought 3 OBDII bluetooth and non-bluetooth scanners, hoping to check my micra k13 for any problems, and also just out of curiosity.
However none of them have worked, or even showed any signs of life.
The battery is the 35Ah stock battery, and the power plug/lighter plug on front of the passenger seat works. Tried to check the fuses but... not sure which one could be missing? There are some empty slots, but from the map none of them seemed related to the problem.
The OBDII readers worked on other cars.
Do you have any idea what the problem could be? Where to look?