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
Electrical Component Locator: Connectors
CONNECTORS LOCATION
| Component | Location |
|---|---|
| BA1 (White, 2 Pin) | At left quarterpanel. See Figure. |
| BA2 (White, 4 Pin) | At left quarterpanel. See Figure. |
| BB1 (White, 2 Pin) | At left quarterpanel. See Figure. |
| BC1 (White, 12 Pin) | Near stereo amplifier. See Figure. |
| BD1 (White, 13 Pin) | Under driver's seat. See Figure. |
| BE1 (White, 13 Pin) | Under front passenger's seat. See Figure. |
| EA1 (White, 10 Pin) | Inside of ECU Box. See Figure. |
| EA2 (White, 9 Pin) | Inside of ECU Box. See Figure. |
| EB1 (Black, 3 Pin) | Behind intake manifold. See Figure. |
| IA1 (Yellow, 2 Pin) | Near driver's side junction block. See Figure. |
| IA2 (White, 18 Pin) | Near driver's side junction block. See Figure. |
| IB1 (Yellow, 2 Pin) | At left kick panel. See Figure. |
| IB2 (Gray, 1 Pin) | At left kick panel. See Figure. |
| IC1 (White, 24 Pin) | At left kick panel. See Figure. |
| IC2 (Gray, 1 Pin) | At left kick panel. See Figure. |
| IC3 (White, 11 Pin) | At left kick panel. See Figure. |
| ID1 (White, 18 Pin) | At left kick panel. See Figure. |
| ID2 (White, 1 Pin) | At left kick panel. See Figure. |
| IE1 (White, 13 Pin) | At left kick panel. See Figure. |
| IE2 (White, 18 Pin) | At left kick panel. See Figure. |
| IE3 (White, 22 Pin) | At left kick panel. See Figure. |
| IF1 (White, 14 Pin) | Near left side of blower unit. See Figure. |
| IG1 (White, 18 Pin) | Near right side dash brace. See Figure. |
| IG2 (White, 14 Pin) | Near right side dash brace. See Figure. |
| IH1 (White, 3 Pin) | Near passenger's side junction block. See Figure. |
| II1 (White, 22 Pin) | Behind right end of dash. See Figure. |
| IJ1 (Yellow, 2 Pin) | Near passenger's side junction block. See Figure. |
| IJ2 (White, 18 Pin) | Near passenger's side junction block. See Figure. |
| IK1 (Yellow, 2 Pin) | At right kick panel. See Figure. |
| IK2 (Gray, 1 Pin) | At right kick panel. See Figure. |
| IL1 (White, 24 Pin) | At right kick panel. See Figure. |
| IL2 (White, 11 Pin) | At right kick panel. See Figure. |
| IM1 (White, 5 Pin) | At right kick panel. See Figure. |
| IM2 (White, 2 Pin) | At right kick panel. See Figure. |
Factory Service Tools
Use the Manual With the Right Hardware
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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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