Power window problem
04-07-2014, 03:43 PM
#1
Power window problem
Occasionally the driver door window switch for the front passenger door on my 05 SCREW will not work. The window can still be operated from the front passenger door switch when this happens. All other windows work normally.
The other day this happened again, so I took the driver door master switch apart to clean it up. The contacts were very dirty. I cleaned them until they were shiny and then put a little dielectric grease on all the contacts to promote continuity. I reassembled the switch and put it back in the truck. Not only did the same problem with the front passenger window persist, but now NONE of the windows work.
I know power is getting to the switch, because it lights up with the headlamp switch. Also, when any of the buttons are pressed, all the door window switch lights throughout the truck go out until the switch is released. None of the windows will now work from any switch.
At this point, I figured the switch was just bad so I ordered a new one (Dorman). I installed it today and still have the exact same problems. Obviously there is a problem with the truck and not the switch.
I bought some electronics spray cleaner and sprayed the harness connections where they go into the switch. I used nearly an entire can and still none of the windows work. I removed the body harness at the A-pillar and also sprayed that liberally with electronics cleaner and still nothing....
At this point I have no idea. I'm guessing it's likely that the Body Control Module went bad? Anyone have other ideas?
The other day this happened again, so I took the driver door master switch apart to clean it up. The contacts were very dirty. I cleaned them until they were shiny and then put a little dielectric grease on all the contacts to promote continuity. I reassembled the switch and put it back in the truck. Not only did the same problem with the front passenger window persist, but now NONE of the windows work.
I know power is getting to the switch, because it lights up with the headlamp switch. Also, when any of the buttons are pressed, all the door window switch lights throughout the truck go out until the switch is released. None of the windows will now work from any switch.
At this point, I figured the switch was just bad so I ordered a new one (Dorman). I installed it today and still have the exact same problems. Obviously there is a problem with the truck and not the switch.
I bought some electronics spray cleaner and sprayed the harness connections where they go into the switch. I used nearly an entire can and still none of the windows work. I removed the body harness at the A-pillar and also sprayed that liberally with electronics cleaner and still nothing....
At this point I have no idea. I'm guessing it's likely that the Body Control Module went bad? Anyone have other ideas?
04-07-2014, 05:44 PM
#3
I popped the master switch out of the driver's door and tested with my multi-meter. I'm more confused than ever now. What's happening doesn't seem possible.
I found a wiring diagram here, and it appears to be correct with the color codes of the wires I tested:
The solid black wire is a good ground when not plugged into the switch (interestingly it doesn't show any continuity with ground when the switch is plugged in).
The Light blue wire with black stripe is battery voltage with the key turned, as it should be. This is the main power wire.
The white wire with black stripe is 0V normally, and with the driver window switch in the down position, shows battery voltage, as it should. The window, however, will not roll down.
The same thing happens for each window. Power is going through the switch, but the windows do not work.
Again, when any switch in the truck is pressed, all the switch lights go out.
So, I am getting a good ground. I am getting power through the switch when I should be, and yet none of the windows work. The switch is not defective because it is doing the exact same thing as the old switch.
It appears that every single power wire for every single window broke at the exact same time. This is impossible. There has to be something else going on here. I don't see in that diagram where the body control module is even wired to the windows, unless it's 100-3 at the top right of the diagram. Even then I don't see how that would have any control over this circuit.
I found a wiring diagram here, and it appears to be correct with the color codes of the wires I tested:
The solid black wire is a good ground when not plugged into the switch (interestingly it doesn't show any continuity with ground when the switch is plugged in).
The Light blue wire with black stripe is battery voltage with the key turned, as it should be. This is the main power wire.
The white wire with black stripe is 0V normally, and with the driver window switch in the down position, shows battery voltage, as it should. The window, however, will not roll down.
The same thing happens for each window. Power is going through the switch, but the windows do not work.
Again, when any switch in the truck is pressed, all the switch lights go out.
So, I am getting a good ground. I am getting power through the switch when I should be, and yet none of the windows work. The switch is not defective because it is doing the exact same thing as the old switch.
It appears that every single power wire for every single window broke at the exact same time. This is impossible. There has to be something else going on here. I don't see in that diagram where the body control module is even wired to the windows, unless it's 100-3 at the top right of the diagram. Even then I don't see how that would have any control over this circuit.
04-11-2014, 12:43 AM
#4
I had/still have thia issue with just the passenger side window. Took the door apart after changing switches and such and a plug had came undone at the bottom center of the door. But now im having this issue again. Gonna tear into it again this weekend and if it's the plug I'm taping it together this time
04-12-2014, 02:43 AM
#7