16v ECU acting up code 12s with jumper engine won't start

[zukitrek]

Good day sir. Glads to know you are back.

So as a recap of my idling issue, my TPS Idle switch volts and ohm numbers are ok by results I posted.
Now DLC jumpered I can start engine and getting 12's all the time endlessly as you saw on video.

So thats:
A- my ISC could still be flaky even though I saw it live (2.20v) or
B- my DMM is not the right one for regulating the duty to 7v.
C- what else can I test?

What then could the problem when shifting to R or D and rpms dropping? BTW this seems to be and on and off thing. Just this morning when I shifted to D RMPs did not drop sometimes it does.

I find time this weekend after all errands to take a look at the ECU.

Buen dia!!!