Power windows not functioning

Tiny
BLESSING EWOBOR
  • MEMBER
  • 2004 TOYOTA HIGHLANDER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 233,465 MILES
Hello, when the "down switch" is pressed, the windows will moved downward but with the "up switch" none of the windows will respond. I have checked the circuit breaker, it was okay. What could be the cause?
Please could you help me with the circuit diagram?
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Monday, October 19th, 2020 AT 7:57 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

I attached the wiring schematic below in pics 1 and 2. I overlapped them to help you follow them.

Now, first check to see if there is power out from the violet wire at the main switch when you select the up direction. That is what powers the window up. The power is sent via the violet computer data line to other windows. See attached. Remember, the power to raise and lower the window is controlled by reversing the polarity of the power supply. So, if it works down, that tells me that the wire isn't broken, but leads me to believe the switch is bad.

Let me know what you find.
Joe
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Monday, October 19th, 2020 AT 9:06 PM
Tiny
BLESSING EWOBOR
  • MEMBER
Thank you.
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Friday, October 23rd, 2020 AT 6:51 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
You are very welcome. Let us know if you have any questions in the future.

Take care,
Joe
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Friday, October 23rd, 2020 AT 9:36 PM

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