On the V6 engine the bottom bolt is accessible from under the truck easily but not the top one. You can remove the right front tire and wheel and access it.
This sounds crazy but, the wiper arm has a switch on it that if it shows that it is in the down position the window will not roll down. Try reseating the wiper arm in its stay. Push up on it firmly to make sure it is seated. The switch should sense that the wiper arm is up and the window will roll down. I had the same problem with my 4Runner. I too ohmed all the wires from the front to the back and the switches as well they tested good. I seated the wiper arm and then it worked fine!
replace master switch for door locks
change your TPS trotle posioning sencer drive safe