2003 F150 King Ranch....Drivers side power window only works when outside temperature is below 50F. All other windows operate correctly from the drivers switch panel. I changed the drivers side power window switch but no dice, same problem. I'm hearing a clicking sound, when I operate the drivers side window switch, coming from the fuse panel to the left of the steering column. I pulled out the lower left relay and swaped it with the relay above it and that does not seem to make a difference so I'm not sure that the relay is the problem either. Could it be a short at the relay connection but not the relay?

 

Anyone with Ford electrical problem knowledge?

 

I checked the wire harness running from the door to the panel but found no frayed wires. I removed the case from the 2 relays in question and found nothing out of the ordinary. I'd hate to spend the $26 for 2 new relays just to find out nothing is was wrong with the original relays. I already spent $90 on a new door swith just to find out nothing was wrong with the original switch. Any way to test a power window relay?