open circuit on driver side power window

Asked by May 15, 2018 at 03:24 PM about the 1997 Ford F-150 XLT Extended Cab SB

Question type: Maintenance & Repair

Pulled the switch plugs on driver side and used a test light. On the plug for the driver window one of the contacts lights up without depressing the button.  The passenger side works fine.  I don't know where to start finding a solution.

4 Answers

25,700

Sounds like the drivers side window does not respond to input, but all other windows will operated from master control on drivers side, right? If you unplug the connection for the drivers side window motor, you should be able to test the individual switch with a multi meter connected to the outputs leading to the motor. If there is a fault you will have to replaced the master control switches. Make sure all the other windows operate properly from the master control.

25,700

It also depends on how the master switch is wired. A wiring diagram is most helpful. Power could be supplied to the master control through the drivers side switch then routed to the other window controls. The motors used in windows are DC motors. To make them go up or down all that is needed is to reverse the polarity to the motor and it runs in the other direction. The switch accomplishes that function. With the switch in the neutral position, key in on position, not pushed up or backward there should be no voltage output to the motor. A small 12V test light should indicate the problem.

I hear what you're saying but I believe the switch is not the problem because I took another switch from an auto that was working fine and had the same problem. The problem is in the wiring to the plug that plugs into the switch. Test light shows it is hot when the key is on. It is not supposed to be. The switch is what allows juice to operate the window.;

25,700

Voltage must be supplied to a switch for it to work, else there is nothing to switch. Try unplugging the connection to the drivers side window and see if the other windows function from the master control. If they don't, then the power supplied via that connection powers the entire master switch.

Your Answer:

F-150

Looking for a Used F-150 in your area?

CarGurus has 12,341 nationwide F-150 listings starting at $352.

Postal Code:

Ford F-150 Experts

  • #1
    OJ
    Reputation
    12,010
  • #2
    dandyoun
    Reputation
    5,150
  • #3
    tennisshoes
    Reputation
    4,150
View All

Related Models For Sale

Used GMC Sierra 1500
58 Great Deals out of 8,820 listings starting at $4,499
Used Dodge Ram 1500
18 Great Deals out of 510 listings starting at $2,600
Used Toyota Tacoma
24 Great Deals out of 1,585 listings starting at $6,858
Used Ford Mustang
50 Great Deals out of 1,531 listings starting at $2,900
Used Ford F-250
6 listings
Used Ford Explorer
29 Great Deals out of 1,652 listings starting at $2,995

Used Cars for Sale

2018 Ford F-150 For Sale
11 Great Deals out of 8,494 listings starting at $352
2017 Ford F-150 For Sale
10 Great Deals out of 408 listings starting at $26,490
2016 Ford F-150 For Sale
6 Great Deals out of 927 listings starting at $18,997
2015 Ford F-150 For Sale
11 Great Deals out of 472 listings starting at $18,995
2014 Ford F-150 For Sale
18 Great Deals out of 406 listings starting at $11,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.