2nd Gen Non-Engine/Transmission Power Window quit

[TEasley]

The passenger side window on my '97 Xcab started warning me a couple of years ago, started having to fiddle with the switch on that door, then just wanted to go down,etc etc. Changed the motor out, the old one wouldn't run up or down when I applied 12v to either terminal and grounded the other. the replacement ran both ways, but when I connected the harness, it wouldn't. I could read 12v at the harness connector, but was afraid to check for ground continuity at the other wire--- figured it might fry my multimeter. Switches apparently switch 12v and ground alternately to reverse direction. I haven't pulled the door panel off the driver side yet. It seems improbable that both switches are failing to switch ground. Has anyone had something like this? I ran the window back full up and left the harness disconnected so no one might randomly get the window to come down.



IDEAS?



Thanks, Tom

 

[Joe G.]

You can test for a ground with the voltage selection on your meter. If there is zero volts no matter what the setting of the switch then you have ground.

 

[TEasley]

Thanks Joe. Not the first time I've the missed the obvious. It took a while to realize the motor couldn't have a common ground and had to alternate 12v and ground thru the brushes to reverse rotation. I kept trying to apply 12v to the up wire without grounding the down wire and vice versa. Told you I was slow.



Thanks again, Tom

 

[BILLVO]

Why do they always have to quit in the down position. Mine just started to act up in the driver door and it rolls down but not up always happens to me this way .

 

[Joe G.]

Why do they always have to quit in the down position. Mine just started to act up in the driver door and it rolls down but not up always happens to me this way .

Murphy's Law