Question about 1993 Ford Thunderbird

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93 Thunderbird, passenger window not working. Got the motor out, the master switch on drivers door will run the motor up, but not down. Will not go in either direction from passenger door?

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  • russmanpower Jul 15, 2010

    As stated in the original problem, the motor goes up and down,it is not bad.

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  • Master
  • 2,272 Answers

Check the connections from master switch to motor.Re check it again if you have checked.Also check by reversing the wires.The wires are not connected or got loose mostly.But in some cases if the motor windings are short then motor only works one side not other side.In that case motor needs replacement.Remove the other window motor and connect it to the passenger side window and confirm .If its motor problem the window will function.But if its wiring problem then other window motor will also do the same thing.In that case rechecked the wirings.In some cases the old wires needs to be removed and new wires needs to be connected externally.Also to confirm its motor or wires you can try this To see if it was the motor, take two wires and jump the motor with a 12volt drill battery. If the motor makes the window function properly in both ways up and down then the wires are faulty from master switch. In some rare cases the switch is faulty and it has to be replaced if wires checked out ok. Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

Posted on Jul 15, 2010

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  • Master
  • 11,896 Answers

Motor is likely bad. The switch on passenger door is probably bad to.

Posted on Jul 15, 2010

  • Nate Stansfield
    Nate Stansfield Jul 15, 2010

    If motor isn't bad, then either the switches are bad or the cable that goes from motor to window is binded or bunched up. Because if a relay or fuse was bad, none of them would work at all.

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Posted on Jan 02, 2017

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Not following you completely.
When you say driver side passenger window, you mean the driver side rear window ?
The window motors get power thru a power window control unit and thru the driver master switch.
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There could be a lock controller somewhere that is not working.
I don't have a wiring diagram for your truck.

Generally, the power window motors are grounded thru the doors, or the switches provide ground. In your case the motors are probably grounded thru the doors.
The master switch "overrides" the door switch so you have extra wires that do the same thing. The E wire probably gives the door switch power and the A and C are up and down. The B and D are override circuits from the master that bypass the door switch.
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1 Answer

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On the passenger door, look for a broken wire in the door opening.

So you found power on one of the two wires. That was with holding the switch in one position, either up or down, right? Try it again, now hold the switch in the opposite position as before, now the other wire that had no power the first time should now have power. If not, probably a break in the wiring, look in the door jamb. If not a broken wire in the passenger door, it could be in the driver's door.

You see, the power is reversible to the window motors. When power goes down one wire to the motor, the other wire serves as a ground. The ground path goes back to the driver's master switch, where the ground for all the windows originate. Ground wire from master switch carries power to ground somewhere inside the cabin. Since other windows work, your ground is good. but the pass. window is, or seems to be missing a wire. Check by looking for power on both wires, but the window switch has to be opposite from the first time for the second wire to have power. Only if both show power is the wiring good, but they wont both show power at the same time-the switch has to be in right position to show power.
I hope this is clear, post back if you don't understand.

Oh yes, use the ohmmeter function of your multi-meter to check the wires' integrity. Just don't have any power on any of the wires you are checking, but check between the pass. door and the driver's master. Check both wires that go to the passenger window. That should tell you if you have a break in the wiring.

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1 Answer

Rear side windows


This may be just a case of inadvertently hitting the window lock out n th driver door window switch by mistake. Check that first. Here's some background on window operation

Principles of Operation
The driver power window regulator motor is controlled directly by the master window/door lock/unlock switch (and its integrated "auto down" module). Power is supplied to the power window relay and the master window/door lock/unlock switch, and the passenger power window switch when the SEC/timer module grounds the coil side of the power window relay. The SEC/timer module will ground this relay when the ignition is in the ON position and will remain energized for approximately 15 minutes or until the driver or passenger door is opened.
The driver power window regulator motor is a reversible motor that is operated by applying power and ground to the motor leads to lower the window, and then reversing polarity on those leads to raise the window.
The passenger power window regulator motor is controlled directly by the passenger power window switch and can also be controlled by the master window/door lock/unlock switch. Power is supplied to the power window relay and the master window/door lock/unlock switch, and the passenger power window switch when the SEC/timer module grounds the coil side of the power window relay. The SEC/timer module will ground this relay when the ignition is in the ON position and will remain energized for approximately 15 minutes or until the driver or passenger door is opened.
The passenger power window regulator motor is a reversible motor, which is operated by applying power and ground to the motor leads to lower the window, and then reversing polarity on those leads to raise the window.
The power rear quarter glass is also directly controlled by the master window/door lock/unlock switch. The power rear quarter glass power latches also utilize reversible motors. The power rear quarter glass power latches are operated by applying power and ground to the motor leads to open the window, and then reversing polarity on those same leads to close the window.
Symptom Chart Condition Possible Sources Action
  • All windows are inoperative
  • BJB Fuse:
    • F20.
  • Circuit.
  • Power window relay.
  • Front door power window switch.
  • GO to Pinpoint Test A .
  • Single power window is inoperative
  • Front door power window switch.
  • Front door power window regulator.
  • Circuit.
  • Driver door power window switch.
  • GO to Pinpoint Test B .
  • Vent power window is inoperative — quarter window glass power latch
  • Circuit.
  • Quarter window glass switch.
  • Quarter window glass power latch.
  • GO to Pinpoint Test C .
  • The one touch down feature is inoperative
  • Master window regulator and door lock switch.
  • INSTALL a new master window/door lock/unlock switch. REFER to Switch—Master Window Door Lock/Unlock .
  • The back window will not defrost
  • CJB Fuses:
    • F30 (10A).
    • F32 (20A).
    • F34 (20A).
  • BJB Fuse:
    • F27 (45A)
  • Circuit.
  • Heated back window switch.
  • SEC/timer module.
  • Rear window defrost relay.
  • GO to Pinpoint Test D .
  • The back window defrost will not shut off automatically
  • SEC/timer module.
  • Circuit.
  • Rear window defrost relay.
  • GO to Pinpoint Test E .

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