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.
2005 Lexus SC 430FACTORY OEM SERVICE PROCEDURE
Power Window Control System - Diagnostics
- Precaution
- Location
- System Diagram
- System Description
- How To Proceed With Troubleshooting
- Customer Problem Analysis Check
- Customize Parameters
- Initialization
- Problem Symptoms Table
- Terminals Of Ecu
- Diagnosis System
- DTC Check/Clear
- Fail-Safe Table
- Data List/Active Test
- Diagnostic Trouble Code Table
- DTC B1221: Power Window Switch Circuit On Driver Door
- DTC B1223: Power Window Switch Circuit On Passenger Door
- DTC B1231, B1232: Jam Protection Limit Switch Circuit On Driver Door, Jam Protection Pulse Switch Circuit On Driver Door
- DTC B1233, B1234: Jam Protection Limit Switch Circuit On Passenger Door, Jam Protection Pulse Switch Circuit On Passenger Door
- Power Window Does Not Operate On Driver Side
- Power Window Does Not Operate On Passenger Side
- Remote Up/Down Function Does Not Operate
- Auto Up Operation Does Not Fully Close Power Window (Jam Protection Function Is Activated)
- Power Windows Can Be Operated After Ignition Switch Is Turned Off Even If Operative Conditions Are Not Met
- Driver Side Door Key And Transmitter Do Not Operate Power Window System
- Driver Door Ecu Power Source Circuit
- Passenger Door Ecu Power Source Circuit
- On-Vehicle Inspection
- Inspection
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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