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.
Inspection Procedure
2005 Lexus ES 330SECTION Inspection Procedure
- INSPECT POWER WINDOW REGULATOR MOTOR ASSY LHNOTE:
- Be sure not to apply the battery voltage to terminals 2,3 and 6 of the power window regulator motor assy LH connector, because it might damage the pulse sensor and the limit switch .
- Be sure to reset the power window regulator motor assembly (initial position setting of the limit switch)when the power window regulator motor assy LH is installed to the regulator.
- when adding the battery voltage to each connector terminal, check that the motor operates smoothly.BATTERY CONNECTION AND OPERATION
Battery Connection/ (Battery Motor Terminals Operation Positive-4/Negative-5 Clockwise rotation towards driving axis Positive-5/Negative-4 Counterclockwise wind rotation toward driving axis
NG/REPLACE POWER WINDOW REGULATOR MOTOR ASSY LH
OK
- CHECK WIRE HARNESS
- Disconnect the D17 power window regulator master switch and P17 power window regulator motor assy LH connectors
- Check the continuity between the disconnected connectors.TESTER CONNECTION AND SPECIFIED CONDITION CHART
Symbols (Terminals No.)/ (Switch <-> Motor) Specified condition MUP<->U (D17-1<->P7-4 Continutiy MDN<-> (D17-11<->P7-5 Continuity
NG/REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR
OK
REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSY
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.