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
Power Mirror Position Sensor
- Disconnect power mirror motor harness connector. Connect three 1.5-volt dry cell batteries together in series. See Fig 1. Connect dry cell battery positive lead to terminal No. 5 and negative lead to terminal No. 14. Connect positive lead of voltmeter to terminal No. 6 and negative lead to terminal No. 14.
- While watching voltmeter, apply battery voltage and ground to terminals No. 1 and 10, reversing polarity as necessary to move mirror in both directions. As mirror moves, voltage should gradually and smoothly change from 0-1.0 volt to 2.8-5.0 volts. If voltage is not as specified, replace power mirror motor assembly. If voltage is as specified, go to next step.
- Disconnect 4 leads of voltmeter and battery voltage from power mirror motor connector terminals (leave dry cell assembly connected). Connect positive lead of voltmeter to terminal No. 13 and negative lead to terminal No. 14.
- Apply battery voltage and ground between terminals No. 9 and 10, reversing polarity as necessary to move mirror in both directions. As mirror moves, voltage should gradually and smoothly change from 0-1.0 volt to 2.8-5.0 volts. If voltage is not as specified, replace power mirror motor assembly.
Factory Service Tools
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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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