Ok I know this is just a general Ford Super Duty question but the 6.0 forum is the only one I ever watch.

The other day I was going down the road and wanted a little fresh air in the cab so I rolled down both front windows. It was pretty cold outside so a few minutes later I went to roll them up. Driver side went up fine the passenger side, nothing. I still had an hour to go to get home. Once I got home I took the panel off removed the motor and manually put the window back up. It moved freely, no binding there. With the motor out and plugged in I hit the up button, and nothing. So I broke out the volt meter and tested both leads, 12 volts on both up and down. Motor was bad I assumed. Went to AZ to pick up a new one, plugged it in and same thing. Bad new motor? I'm not sure, cause I started checking voltages again and when I would push the up button I would get power on 1 lead but when I pushed the down button I would get power on both leads!! No I didn't type that wrong, the motor will work going down but not up. I am confused now. You would think if I was getting power on both leads when pushing down it wouldn't go down.

I checked what wiring I could that would get chaffed and short, but I haven't pulled the dash. Is there a relay or fusable link that I need to check that would cause this? I'm stumped.

Truck is a 2006 f-250 6.0 king ranch, studded, egr cooler welded, coolant filter, blue spring, zoodad mod, SCT ITSX w/IPad for guages including EGT, and fuel pressure guage.
I know all that wasn't necessary but all work was done by myself and I'm proud. Fuel pressure guage has already saved my injectors once with a bad HFCM.

 

Yeah, that would suck here for me too. I think you should check the techy folder for diagram and look at fuses and relays. The other possibility I'd your switch on the drivers door. What happens when you use tha passenger switch, any different voltages or results?

 

I was doing this by myself couldn't check voltages from driver side control but neither button worked when trying to roll it up

 

if i open drivers door then the switch works for passenger side been like that for years now weird or what

 

The power windows work by providing 12v to one terminal and GND to the other. The motor reverses by swapping power and ground on the terminals. When the UP switch is pressed, you get one combination of 12v and GND. When DOWN is pressed the combination is swapped. A bad switch may not be providing GND for the DOWN motion.

Here's the wiring diagram. It gets complicated by the master switch being wired to both sides.

https://lemon-manuals.la/Ford/2006/F...grams/Windows/

Maybe a new switch is easier than troubleshooting all the wiring, but you could have a bad wire or connection.