1. Check the fuse: Locate the fuse box, usually in the engine compartment or under the dashboard. Identify the fuse that corresponds to the power window (refer to the vehicle's owner's manual). If the fuse is blown (broken), replace it with a new one of the same amperage.
2. Test the switch: Operate the power window switch. If you hear a clicking sound when pressing the switch, it indicates the switch is working. However, the problem could still be within the switch's internal components.
3. Check for power at the motor: Use a multimeter or test light to check if there is electrical power at the motor connector. If there's no power, it could be an issue with the wiring, switch, or fuse.
4. Test the motor: If there is power at the motor connector, the problem may lie within the motor itself. Disconnect the motor connector and apply direct power from the battery to the motor terminals. If the motor operates, the switch is faulty; If it doesn't, the motor needs to be replaced.
By following these steps, you can narrow down the cause of the non-functioning power window and determine whether the problem is likely due to the switch, motor, or a fuse issue.
