1999 Superduty Power Windows not working

Kevin 007 · Apr 19, 2017

Both power windows in my 99 F550 7.3, were working just fine and rolled the drivers one down one day (in the rain) and it won't go back up, both windows are dead. Both switches on drivers door and the switch on passenger door do nothing.

The fuse, (position 25) in the fuse box, is fine. The wires thru the boot in the door jam seem fine. Unplugged the switch and jumped out the wires to get the window back up. Motor functions fine. Does anyone have any thoughts here as to where a window relay or something might be in these superduty psd trucks? Or any other thoughts for that matter. I'm tempted to just switch doors with another truck that has manual windows but that's a last resort.

79jasper · Apr 19, 2017

Fuse 25 under hood. Should be 30 amp fuse/circuit breaker.
Not sure why you didn't locate a owner's manual.
http://www.fordservicecontent.com/Ford_Content/catalog/owner_guides/9973l731e.pdf
http://www.fordservicecontent.com/Ford_Content/catalog/owner_guides/99f23og4e.pdf

Sent from my SAMSUNG-SM-G935A using Tapatalk

Kevin 007 · Apr 20, 2017

The fuse (#25) is fine as I stated in my original post. That's why I chose to politely ask for other suggestions, here on the forum.

79jasper · Apr 20, 2017

Ha missed where you said it was 25.
It's a fuse or circuit breaker?
Check position 4 relay in the dash.
There's also one labeled as power window/lock illumination. But I think that's only the light.

Sent from my SAMSUNG-SM-G935A using Tapatalk

79jasper · Apr 21, 2017

When you jumped it, was that from the battery? Or just in the switch connector with the switch out?
If the latter, it's possible the switches just went at the same time.

Sent from my SAMSUNG-SM-G935A using Tapatalk

Double-S-Diesel · Apr 22, 2017

driver side switches control both the driver side and the passanger side windows.
we had trouble on an 03 before that eneded up being a problem in the fuse box with the accessory delay relay . radio didnt work right either.

SebastIDIan · Apr 22, 2017

Does the radio work? What about the dome light? Test the switches with a voltmeter if you have one.

Kevin 007 · Apr 22, 2017

I jumped the window motor out from the battery as there is no power from the light blue wire w/ black tracer, as I believe there is supposed to be anytime the key is either ON or ACC.
The lock/window illumination fuse is fine, not sure about the #4 relay under the dash. I'm betting that might be it. I will have to track that down.
The radio does work and so does the dome light.

Was told yesterday that it could also be the "GEM" module if all else fails. I hope not

OLDBULL8 · Apr 22, 2017

Here's the circuit.

You must be registered for see images attach

79jasper · Apr 22, 2017

I can't remember what years have the gem. But that could be a possibility.

Sent from my SAMSUNG-SM-G935A using Tapatalk

OLDBULL8 · Apr 22, 2017

I have a CD for every Ford Car and truck from 99 to 2002. That's the only Power Window circuit that's on there.

trackspeeder · Apr 22, 2017

79jasper said:
I can't remember what years have the gem. But that could be a possibility.

Sent from my SAMSUNG-SM-G935A using Tapatalk

99-01 have a GEM.

Kevin 007 · Apr 22, 2017

OLDBULL8 said:
Here's the circuit.

You must be registered for see images attach

WOW THANKS!

1999 Superduty Power Windows not working

Kevin 007

Full-floater

79jasper

Chickenhawk

Kevin 007

Full-floater

79jasper

Chickenhawk

79jasper

Chickenhawk

Double-S-Diesel

parts seller

SebastIDIan

Full Access Member

Kevin 007

Full-floater

OLDBULL8

Good Morning Ya'll.

79jasper

Chickenhawk

OLDBULL8

Good Morning Ya'll.

trackspeeder

Stone crusher.

Kevin 007

Full-floater

Similar threads

Latest posts

Forum statistics

Members online

Share this page