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.
2001 Lexus LS 430FACTORY OEM SERVICE PROCEDURE
Window Motor Circuit
- If Lexus hand-held tester is not available, go to next step. If Lexus hand-held tester is available, attempt to operate window motor in ACTIVE TEST mode. If window motor operates, perform check for next fault listed under appropriate symptom. See TROUBLE SHOOTING . If window motor does not operate, go to next step.
- Check window motor. See WINDOW MOTOR under COMPONENT TESTS. Repair as necessary. If window motor is okay, go to next step.
- Check wiring harness and connectors between window motor and appropriate door ECU. See WIRING DIAGRAMS . Repair as necessary. If wiring harness and connectors are okay, perform check for next fault listed under appropriate symptom. See TROUBLE SHOOTING .
Factory Service Tools
Use the Manual With the Right Hardware
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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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