It would be harder and useless if the switch or motor wasn't the problem. The most expensive and least effective way to troubleshoot something is by throwing random parts at it. Each time you do that, you install another variable that has the potential to create an additional problem.
Have you considered a broken wire between the driver's door hinges? That is way more common than a bad switch or motor.
The driver's switch is different than the other switches. If testing proves it is defective, and you want to be as cheap as I am, you can pop the switch apart and look for overheated contacts. Fold up a small sliver of sandpaper to slide between them and polish them up. It's not often a switch can't be repaired this way. Both the switches and motors don't fail very often so there isn't much call for them at the salvage yards. You should be able to find either part there at a very low cost.
Tuesday, July 12th, 2011 AT 7:40 AM