Power window not working properly

Tiny
DJMARSOLEK
  • MEMBER
  • 2010 CHEVROLET COBALT
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 130,000 MILES
Passenger side power window will go down but not up using either the driver's master switch or the passenger switch. Window will go up and down if I connect the motor directly to the battery. Replaced the passenger door switch with new one. Still won't go up with the new switch.
If motor and switch are both good, what else could cause the window to go down but not up?
Sunday, August 23rd, 2020 AT 12:46 PM

42 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

I attached a wiring diagram for you.

Do you have a test light or voltmeter to do some checks?

https://www.2carpros.com/articles/how-to-check-wiring

Roy
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Sunday, August 23rd, 2020 AT 2:17 PM
Tiny
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I have a test light and a cheap meter.
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Sunday, August 23rd, 2020 AT 2:31 PM
Tiny
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When commanding the window up, check the dark blue wire at the switch for power with a test light.

Roy
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Sunday, August 23rd, 2020 AT 2:42 PM
Tiny
DJMARSOLEK
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With the driver's door master switch in the up position for the passenger's window, the light blue wire lights up. Not the dark blue wire. None of the wire's light up (except the power wire) when I have the drivers door master switch down for the passenger window. This makes no sense because I can use either the master switch or the passenger switch to get the window down, but neither switch will work to get the window up.
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Sunday, August 23rd, 2020 AT 3:12 PM
Tiny
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Does the dark green wire at the passenger switch have power with the key on?

Roy
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Sunday, August 23rd, 2020 AT 3:19 PM
Tiny
DJMARSOLEK
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Yes.
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Sunday, August 23rd, 2020 AT 3:22 PM
Tiny
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When you command up with the passenger switch, the dark green should power the dark blue.
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Sunday, August 23rd, 2020 AT 3:27 PM
Tiny
DJMARSOLEK
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  • 21 POSTS
Not sure how to check that with the passenger switch not plugged into the wire harness. I tired using a wire to connect the dark green wire to the dark blue, then turning on the key. Nothing happened. I then tried the same thing with the wire connecting the dark green to the down wire. Nothing happened.
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Sunday, August 23rd, 2020 AT 3:52 PM
Tiny
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The tests I wanted you to do are with the switch plugged in.
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Sunday, August 23rd, 2020 AT 3:53 PM
Tiny
DJMARSOLEK
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  • 21 POSTS
I'm not sure how to test that with the switch plugged into the connector. I removed the door panel and checked to see if activating the switch sent a signal to the connector that plugs into the motor. It did. All these connector.S seem to be fine. I've made the window go up and down by applying power directly from the battery to the connector that plugs in to the passenger door switch as well as directly to the motor. I'm not sure what I could be missing.
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Sunday, August 23rd, 2020 AT 4:13 PM
Tiny
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I read all that already. All you have to do is remove the switch with the wires attached and back probe them with the procedure I asked you to do.

Roy
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Sunday, August 23rd, 2020 AT 4:42 PM
Tiny
DJMARSOLEK
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Unfortunately, it started to rain and I do not have a garage. I'll have to try this tomorrow. Thanks for your help. I really appreciate it.
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Sunday, August 23rd, 2020 AT 5:08 PM
Tiny
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You are welcome.

Always glad to help.

Roy
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+1
Monday, August 24th, 2020 AT 1:30 AM
Tiny
DJMARSOLEK
  • MEMBER
  • 21 POSTS
Using my cheap meter, I determined that voltage did not go through to the motor when pulling the window switch up. I checked again and confirmed there was continuity in both wires that go from the switch to the motor. Is it possible there is something wrong with the master switch in the driver's door?
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Monday, August 24th, 2020 AT 2:09 PM
Tiny
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You just checked the passenger switch? Is that correct?

Roy
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Monday, August 24th, 2020 AT 2:20 PM
Tiny
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Yes. I did not check the driver's master switch. I was not sure if something in that switch could mess up the passenger door switch.
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Monday, August 24th, 2020 AT 2:27 PM
Tiny
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Go back the switch again and do the test I requested. I posted it below.

When you command up with the passenger switch, the dark green should power the dark blue.

The dark green wire comes from the fuse in the fuse panel.

Roy
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Monday, August 24th, 2020 AT 2:39 PM
Tiny
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I tested the switch on the passenger door. When pushing the switch down, my meter registers voltage at the connector that plugs into the motor. When pulling the switch up, it does not.
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Monday, August 24th, 2020 AT 2:50 PM
Tiny
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I asked you twice for the voltage on the 2 wires I posted.

Can you please give me those results?

Roy
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Monday, August 24th, 2020 AT 3:07 PM
Tiny
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I'm sorry that I didn't realize you wanted the the voltage numbers. I can't get the meter to measure any voltage now, either with the switch up or down. However, activating the switch in the down position still gets the window to go down. I don't want to waste any more of your time. I think I'm going to throw in the towel. Thanks for your patience while trying to help me out.
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Monday, August 24th, 2020 AT 4:25 PM

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