Hey Dr. J I finally found the problem!!
It turns out, as you suggested, that the AC high pressure switch is apparently failed open. I jumpered the connector last night and the fans operate as they should. (Yipee!)
I was studying the wiring print and it appeared that the temp sensor circuit is the only thing common to both fan circuits.
I need to replace the high press switch but I'm not sure if it is attached to the receiver dryer on a shrader valve connector or not. Would you happen to know?
Thank you so much for the help!! I just love the Toyotanation website!!
An unrelated question: Would you happen to know what controls the torque converter lockup solenoid on this car? There appears to be 2 speed sensors - one integral to the speedometer and one on the transaxle. Does one of these control the lockup function? My converter locks up every time the transmission up-shifts. I can't find a diagram anywhere that shows this system. Again, any help is greatly appreciated!!
