Also the vsv switch is discontinued from Toyota, but there’s posts out there on how to buy replacements from other Toyota vehicles that are identical and will work if you need to replace them.
I just finally fixed mine, so I have a lot of experience with the entire system now lol.
You don’t have 4hi or low? It doesn’t shift or the lights are flashing on the dash, it shifts but doesn’t engage? You need to pull the 4wd switches through out the vehicle, don’t climb under there and try...