Power windows are not working properly?

JOHNDAN2

MEMBER
1988 TOYOTA CELICA
2.0L
4 CYL
2WD
MANUAL
200,000 MILES

The car listed above is a GT model, 3SFE, convertible. When I pressed the rear driver's side window switch, the window went up, but the switch's wiring became instantly hot. I quickly unplugged it and let it cool off then tried it again. None of the window switches work. I bypassed them with a jumper cable from the battery to each of the 4 motors, and all still work fine. The fuses are all good as well. I'm at a loss.

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
47,690 POSTS

The wiring becomes hot because of the bad ground or a window motor with high resistance. If the wire does not heat up when testing the motors, I would check the ground for the system. here is a guide to help and the ground wire is by the left kick panel, here is the wiring diagrams so you can see how the system works.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

and

https://www.2carpros.com/articles/how-to-use-a-voltmeter

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