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 400FACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Miscellaneous
MISCELLANEOUS
| Component | Component Location |
|---|---|
| CD Automatic Changer | At right side of luggage compartment. See Figure. |
| Data Link Connector (DLC) No. 1 (3.0L) | On left side of engine, near strut tower. See Figure. |
| Data Link Connector (DLC) No. 1 (4.0L) | At left rear side of engine. See Figure. |
| Data Link Connector (DLC) No. 2 | Behind left side of dash. |
| Data Link Connector (DLC) No. 3 | Behind left side of dash. |
| Diode (Tension Reducer) | Behind left kick panel. |
| Noise Filter (Defogger System) (3.0L) | At left side of engine compartment, near fuse block. See Figure. |
| Noise Filter (Defogger System) (4.0L) | At left side of engine compartment, near fuse block. See Figure. |
| Noise Filter (Ignition System) (3.0L) | At left side of engine compartment, on strut tower. |
| Noise Filter (Ignition System) (4.0L) | At left rear corner of engine. |
| Stereo Power Amplifier | At right side of luggage compartment. |
| Telephone Transceiver & Speaker Relay | At left rear corner of luggage compartment. |
| Theft Deterrent Horn (3.0L) | At left side of engine compartment, near strut tower. |
| Theft Deterrent Horn (4.0L) | At left side of engine compartment, near strut tower. See Figure. |
| Transponder Key Amplifier | Behind left side of dash. See Figure. |
| Woofer Speaker Amplifier | At right side of luggage compartment. |
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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