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.
2004 Lexus SC 430FACTORY OEM SERVICE PROCEDURE
Power Window Control System - Diagnosis
- How To Proceed With Troubleshooting
- Customer Problem Analysis Check
- Pre-Check
- Diagnostic Trouble Code Table
- Location
- Terminals Of Ecu
- Problem Symptoms 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/Pulse Switch Circuit On Driver Door
- DTC B1233, B1234: Jam Protection Limit/Pulse Switch Circuit On Passenger Door
- Driver Power Window Does Not Operate
- Power Window Does Not Operate Via Passenger Power Window Switch
- Passenger Window Dose Not Operate Via Master Switch
- Power Window Does Not Operate Via Driver Door Key Cylinder
- Power Window Does Not Operate After Ignition Key Off
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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