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
Diagnostic Trouble Code Table
DIAGNOSTIC TROUBLE CODE TABLE
| DTC | Description |
|---|---|
| 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 |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.