I managed to find a diagram and checked fuses again.
I had a weird result on fuse 22. Its blackened on one side but checks out on continuity. The voltage was inconsistent. I swapped it out and now have good voltages and now the Actron CP-9580a works (329 PID - Parameter Identification Data codes), but only under manual selection. I'm wondering if there is a loose or bad connection or if was just the fuse. Time will tell I suppose
No codes though.
I ran the engine for 30 minutes and it never stopped.
Not sure this is an intermittent fault and am waiting for the CPS delivery today.
I noted during some of my searches that there is a fan under the fuse box/computer areas that sometimes slows down or fails causing overheating issues. I'll look into this as well.
Any other ideas or comments ?
I have noted that there are a lot of reported intermittent issues that come and go. Time will tell if both problems are permanently or temporarily fixed