Edmunds Answers

Voted Best Answer

  • avatar docj 04/19/09 12:44 am PST

    Get yourself a 12 volt test light and check for power/voltage at the front window motors.
    Basically,touch the test light to one wire terminal at the motor wiring connector and push the switch up and then down,it it lights up in either position,then touch the other termninal and do the same thing.,If it lights up,then you have a faulty motor.
    If no power is going to the motor,i would suspect a faulty master switch.
    Check the drivers door motor first.

    Wiring coming thru the conduit to the drivers door can break and cause inoperative windows but it usually would affect all 4 windows.
    All the windows get feed off the master switch as you know and get their ground thru this switch as well.
    You can check the wiring in the pass thru conduit for an open...look at the color wires at the switch and check the wiring of that color coming thru..
    Usually big gauge wires -10 or 12 gauge wires


    What you can do to is take a jumper wire,use a 10 gauge wire and connect it to the battery positive ,careful not to touch the other end to any metal ....and then touch the other end to one of the terminals at the motor itself and see if the motor operates,may need to touch one then the other to see which one will move the motor depending if its up or down.If it moves,then you know the motor is ok.Do this with the connector disconnected from the motor...

    Doc J

Answers

  • docj 04/19/09 12:44 am PST

    Get yourself a 12 volt test light and check for power/voltage at the front window motors.
    Basically,touch the test light to one wire terminal at the motor wiring connector and push the switch up and then down,it it lights up in either position,then touch the other termninal and do the same thing.,If it lights up,then you have a faulty motor.
    If no power is going to the motor,i would suspect a faulty master switch.
    Check the drivers door motor first.

    Wiring coming thru the conduit to the drivers door can break and cause inoperative windows but it usually would affect all 4 windows.
    All the windows get feed off the master switch as you know and get their ground thru this switch as well.
    You can check the wiring in the pass thru conduit for an open...look at the color wires at the switch and check the wiring of that color coming thru..
    Usually big gauge wires -10 or 12 gauge wires


    What you can do to is take a jumper wire,use a 10 gauge wire and connect it to the battery positive ,careful not to touch the other end to any metal ....and then touch the other end to one of the terminals at the motor itself and see if the motor operates,may need to touch one then the other to see which one will move the motor depending if its up or down.If it moves,then you know the motor is ok.Do this with the connector disconnected from the motor...

    Doc J

  • tony78 04/19/09 12:51 am PST

    dave, This is your starting point :

    If power is coming into the master switch from an outside source ( and it is because that is how the rear windows are going up and down ) then you should be able to check for the presence of voltage on all of the wires that come out of the switch and go to their respective locations.

    The second place to check for voltage is at all of your secondary switchs,,frt seat pssngr door, lft and right back seat doors.

    And then you would get a 12 volt stand alone battery, use 2 jumper wires and provide power directly to the power window motors,,to see if they operate directly from a voltage source.

    go to your local library and go to the reference section and ask the librarian to help you locate a repair manual and a wiring diagram,,,it will make all of this a whole lot easier.

    hope this helps

  • friardave 04/19/09 8:09 am PST

    Hi thanks for the answers...i should note that i used my test light and found voltage at the switch when i pushed either front window button
    tony i totally forgot about using the library...i definetely need a diagram...thanks
    should the wiring color be the same at the conduit as at the switch?

ADVERTISEMENT

Top Electrical Power Windows Experts View More

Rank Leader Points
1. MrShift@Edmunds 615
2. karjunkie 465
3. docj 155
4. tony78 120
5. Stever@Edmunds 85
6. Mr_Shiftright 75
7. texases 75
ADVERTISEMENT