Thanks for the instructions. I did the fix over 2 days so I had the whole night to play around with the PNP switch. Cleaned the grease, sanded the copper plates and adjusted the springs. And it looked like the copper arcs acts as an encoder to tell the computer the position of the gear via the pins ...

I was told by my mechanic there is some rack and pinion leakage.
So when I start using the Valvoline ATF stop leak to replace the current ATF, do I tell the mechanic NOT to top off with other ATF in the future?