hello everyone;
I prepared my circuit according to @vtl's recommendations. It managed to decode the PIN on the first try. I now have the PIN code for my MY12 XC90. Thank you very much.
I'm a novice at this and I'm just getting started. I have some experience in coding field. I'm working on Python ...

great. I will try all.

thank you so much @vtl
I have the necessary circuit elements ready. I wanted to give it a try with the simplest method, I was happy thinking it would be successful after passing the first 3 steps. I followed this thread from the first page. I knew about the cable and other features you mentioned ...

Hello everyone
I would like to thank all the participants who prepared and supported this magnificent project.
My English is not very good so I use google translate. Please forgive me if I have any errors in expression.
I prepared my circuit as in the picture. I connected it to my 2012 model XC90 ...