Left rear door window not working - motor OK

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by rwernst, Jun 2, 2017.

  1. rwernst

    rwernst Junior Member

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    P1100687 Prius rear door wiring 20.jpg Hmmmm, suddenly/without warning, my 2005 Gen II Prius' left rear door window wouldn't go up or down.

    Won't go up or down via door switch, nor driver's door switch, but ALL other windows work fine from doors and driver's door.

    Got the panel off without too much trouble. Tested switch with the one from the right door, doesn't work, and left switch on right door works fine so it's not the switch.

    Also, there's power at 2 of the connectors to the switch, which seems to be appropriate. Hmmm, haven't checked the right side switch connector for power/ground to compare, I will do that.

    After much head scratching and horrible time removing the plastic with that awful black stuff and tearing the plastic a bunch, found that the motor connection is actually at the top right (near hinge). Applied power to those terminals and motor worked up and down fine.

    So... what's next? Since the driver's door can also control the windows, where do I find a wiring diagram for that circuit?

    And/or what would be wrong? Is there a fuse or relay for JUST the left rear door window? Seems unlikely.

    Some circuit that both driver's switch and door switch complete is apparently faulty.
     
    #1 rwernst, Jun 2, 2017
  2. andrewclaus

    andrewclaus Active Member

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    You can find wiring diagrams on this site in "The File Library" section.

    Have you checked the wiring from the switch to the motor (G and Y wires). It sounds like you have depending on where you applied the 12V. Perhaps a peculiar mating problem between the original switch and the connector.
     
    #2 andrewclaus, Jun 2, 2017
    Last edited: Jun 2, 2017
  3. rwernst

    rwernst Junior Member

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    I'm feeling stupid, but can not find "The File Library".

    And no wires from switch go directly to the motor. They go into the harness and come out where?

    That's why I need the wiring diagram. Since the driver's door master switch doesn't open or close the window, but the motor works when directly powered from 12v, it's something else.

    Thanks,

    Rich
     
    #3 rwernst, Jun 3, 2017
    Last edited: Jun 3, 2017
  4. bisco

    bisco cookie crumbler

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    at the bottom of the gen 2 forums.
     
    #4 bisco, Jun 3, 2017
  5. andrewclaus

    andrewclaus Active Member

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    Here's a snapshot of part of the diagram:
    upload_2017-6-3_6-22-43.png
     

    Attached Files:

    #5 andrewclaus, Jun 3, 2017
  6. rwernst

    rwernst Junior Member

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    Thanks! Found the File LIbrary as well and think I have what I need. Now to dig through it and test, test, test.

    Thanks all!
     
    #6 rwernst, Jun 3, 2017
  7. Mike Jr.

    Mike Jr. New Member

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    I have the same problem with the driver's door I have replaced the switch panel with 3 different ones also replaced window motor. I tested with a meter power input and output to motor I get nothing. But the other windows work great I don't get it works fine and one day I roll down and that's it won't go up.
     
    #7 Mike Jr., Dec 9, 2018
  8. scott99

    scott99 New Member

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    I am having problems with the passenger window not moving. I pressed on the window power switch for 5 plus seconds and it worked, but only for a few days. Now it does not work at all. Before that i took out the window regulator and the motor and plug it into the other passenger side and plugged it in and it worked. I replaced the master control for the windows at the drivers side and that did not help.
     
    #8 scott99, Jun 24, 2019
  9. james909

    james909 Junior Member

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    I have the exact same problem with a passenger rear window that went down and stayed down. I had to disconnect the motor and manually put the window up. If I reconnect it just goes back down. Had to use duct tape to cover a small gap at the top of the window. Any ideas why it's automatically trying to go down even though no buttons are being pressed
     
    #9 james909, Sep 29, 2024
  10. mr_guy_mann

    mr_guy_mann Senior Member

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    If the motor pulls the window glass down when you plug it in, then it must be getting 12V power on the green wire (at the right rear window switch).

    Normally, the black and white wires are grounded inside the master (left front) window switch. When you move a switch rocker (on either switch), it disconnects one circuit from ground and then connects it to 12V. You have current flow through the motor and the window moves.

    Move the rocker the other way, the first circuit stays grounded and the second goes to 12V. Current flow and motor direction are reversed.

    I would unplug the Right Rear switch then turn the ignition on. Now test which wires have 12V. If it's only the blue wire, then the RR switch has a fault. If the white wire has 12V, then the fault is "upstream" - likely the master switch but possibly a short in the harness.

    Screenshot_20240929-093432.jpeg

    Posted via the PriusChat mobile app.
     
    #10 mr_guy_mann, Sep 29, 2024
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