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.
1998 Lexus SC 300FACTORY OEM SERVICE PROCEDURE
Ignition Coil
NOTE:
Information for GS400, LS400 & SC400 is not available from manufacturer at time of publication.
IGNITION COIL RESISTANCE
| Application | Primary | Secondary | |||||
|---|---|---|---|---|---|---|---|
| Aisan | |||||||
| Cold (1) | .70-.94 | 10,800-14,900 | |||||
| Hot (2) | .85-1.10 | 13,100-17,500 | |||||
| Diamond | |||||||
| Cold (1) | .70-.94 | 6,800-11,700 | |||||
| Hot (2) | .85-1.10 | 8,600-13,700 | |||||
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IGNITION COIL RESISTANCE
| Application | Primary | Secondary | ||||
|---|---|---|---|---|---|---|
| Cold (1) | .33-.52 | 8,500-14,700 | ||||
| Hot (2) | .42-.61 | 10,800-17,200 | ||||
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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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