EBay to the rescue!
The replacement 4WD ECU is here, so let's plug it in and see if our initial diagnosis was correct...

Uh Oh...the 4 Runner is STILL STUCK in 4x4!!
Grrrr back to the drawing board...what did I MISS in Part 1?

This is why modules with NO CODES OR LIVE DATA can be some of the most time-consuming to diagnose...

You won't believe what the problem actually is!!

TOPDON TORNADO 90000 BATTERY CHARGER:
www.amazon.com/dp/B09XV64Q49?linkCode=ssc&tag=onam…

Enjoy!
Ivan