Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit Description
The power window regulator master switch controls the driver's power window and activates the driver's power window motor. If a malfunction is found in the pulse sensor during motor operation, the fail-safe function will stop UP/DOWN operation.
If the AUTO UP/DOWN function does not operate, the cause may be one or more of the following:
- The recorded power window fully closed position, which is stored in the power window regulator master switch, was erased as a result of the battery terminal or the power window regulator master switch connector being disconnected.
- The pulse sensor in the power window regulator motor has a malfunction.
- The wiring between the power window regulator master switch and the corresponding power window regulator motor is open or short circuit.
- The power window regulator master switch has a malfunction.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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