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.
2003 Lexus SC 430FACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Splices
SPLICES LOCATION
| Component | Component Location |
|---|---|
| B2 | In body harness, near roof position limit switch No. 3. |
| B3 | In body harness, near breakout to telephone computer. |
| B4 | In body harness, near breakout to rear woofer. |
| E1 | In engine No. 4 harness, near breakout to positive battery cable. See Figure. |
| E2 | In engine wire harness, near breakout to ground EB. See Figure. |
| E3 | In engine wire harness, near breakout to fuel injector No. 5. See Figure. |
| E4 | Near engine control module. See Figure. |
| E5 | Near engine control module. See Figure. |
| E6 | In engine compartment main harness, near center of left fender. See Figure. |
| I1 | In A/C sub No. 2 wire harness, near connector for driver's side air mix control servo motor. See Figure. |
| I2 | At right "A" pillar, near connector IK2. See Figure. |
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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