I have a 2006 4Runner Sport. The fan works fine with no unusual noises, but it only operates on high. I did a search on this and it looks like the problem might be a blower motor resistor. Is this a common problem? In case it is the blower motor resistor, I tried to find that part on some sites that sell genuine Toyota parts, but I couldn't fine anything by that name. What else would it be called? I found something called a "controller", but it was over $130. On some of the threads I found where the problem was the blower motor resistor, guys were saying the part was less than $40. Any ideas?