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Re: power window problems
All wires to the motors are ground, when you operate the switch, it removes the ground and applies battery voltage to one of the wires to the motor. When the key is on, one wire at the window switch should show battery voltage, all other wires should show less than 5 ohms resistance to ground.
Disconnect the connector at the motor, connect a digital volt meter between the two terminals in the motor harness connector that you removed from the motor. Key on, operate the window switch in one direction, the voltmeter should show + battery voltage. Operate the switch in the other direction and the voltmeter should show - battery voltage. If this test passes, the motor is faulty.
If the test fails: check resistance at the motor harness connector. Key off, both wires should show less than 5 ohms resistance to ground. Post the results.
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You have to know how it works,
to figure out why it doesn't.
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