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
Service Data
SERVICE DATA SPECIFICATION
| Ignition coil | Standard | 10-14V |
| Spark plug | Recommended spark plug: ND made | SK20R11 |
| NGK made | IFR6A11 | |
| Correct electrode gap for new spark plug | 1.0-1.1 mm (0.039-0.043 in.) | |
| Maximum electrode gap for used spark plug | 1.3 mm (0.051 in.) | |
| Crankshaft position sensor | Resistance: Cold | 1,630-2,740 ohm |
| Hot | 2,065-3,225 ohm | |
| Camshaft position sensor | Resistance: Cold | 835 -1,400 ohm |
| Hot | 1,060-1,645 ohm |
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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