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.
2009 Lexus SC 430FACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Miscellaneous
MISCELLANEOUS LOCATION
| Component | Location |
|---|---|
| Airbag Squib (Front Passenger Airbag Assembly) | Right side of dash. See Figure. |
| Airbag Squib (Steering Wheel Pad) | Center of steering wheel. See Figure. |
| Data Link Connector (DLC) No. 3 | Left side of dash. See Figure. |
| Fuel Pump Resistor | Left rear of engine compartment. See Figure. |
| Generator | Right front of engine. See Figure. |
| Horn (Left) | Behind grille. See Figure. |
| Horn (Right) | Behind grille. See Figure. |
| Ignition Coil And Igniter No. 1 | Top left side of engine. See Figure. |
| Ignition Coil And Igniter No. 2 | Top right side of engine. See Figure. |
| Ignition Coil And Igniter No. 3 | Top left side of engine. See Figure. |
| Ignition Coil And Igniter No. 4 | Top right side of engine. See Figure. |
| Ignition Coil And Igniter No. 5 | Top left side of engine. See Figure. |
| Ignition Coil And Igniter No. 6 | Top right side of engine. See Figure. |
| Ignition Coil And Igniter No. 7 | Top left side of engine. See Figure. |
| Ignition Coil And Igniter No. 8 | Top right side of engine. See Figure. |
| Junction Connector J8 | Left end of dash. See Figure. |
| Junction Connector J11 | Center of dash. See Figure. |
| Junction Connector J15 | Above right rear wheel. See Figure. |
| Junction Connector J17 | Left rear of luggage compartment. See Figure. |
| Junction Connector J18 | Right rear of luggage compartment. See Figure. |
| Junction Connector J19 | Under driver's seat. See Figure. |
| Junction Connector J20 | Under driver's seat. See Figure. |
| Junction Connector J21 | Under front passenger's seat. See Figure. |
| Junction Connector J22 | Under front passenger's seat. See Figure. |
| Junction Connector J25 | Right side of dash. See Figure. |
| Junction Connectors J1, J2 & J3 | Engine room No. 2 R/B. See Figure. |
| Junction Connectors J4, J5, J6 & J7 | In ECU box. See Figure. |
| Junction Connectors J9 & J10 | Top left end of dash. See Figure. |
| Junction Connectors J12, J13 & J14 | Right side of dash. See Figure. |
| Knee Airbag Squib (Driver/Front Passenger) | Respective lower sides of dash. See Figure. |
| Microphone Amplifier Assembly | Right kick panel. See Figure. |
| Navigation Amplifier | Right rear of luggage compartment. See Figure. |
| Noise Filter (Ignition, Left Bank) | Top left rear of engine. See Figure. |
| Noise Filter (Ignition, Right Bank) | Top right side of engine. See Figure. |
| Noise Filter (Rear Window Defogger) | Left front of luggage compartment. See Figure. |
| Pretensioner (Left/Right) | Base of respective "B" pillar. See Figure. |
| Rear Window Defogger | Rear window. See Figure. |
| Short Connector | Rear center of luggage compartment. See Figure. |
| Short Pin No. 1 | Engine room No. 2 R/B. See Figure. |
| Short Pin No. 2 | Engine room No. 2 R/B. See Figure. |
| Short Pin No. 3 | Engine room No. 2 R/B. See Figure. |
| Side Airbag Squib (Left) | Left side of driver's seat. See Figure. |
| Side Airbag Squib (Right) | Right side of front passenger's seat. See Figure. |
| Starter | Rear of engine. See Figure. |
| Stereo Component Amplifier | Right rear of luggage compartment. See Figure. |
| Theft Deterrent Horn | Right front of engine compartment. See Figure. |
| Tire Pressure Warning Antenna (Front) (Left/Right) | Respective front wheelwells. See Figure. |
| Tire Pressure Warning Antenna (Rear) (Left/Right) | Respective rear wheelwells. See Figure. |
| Transponder Key Amplifier | Behind left side of dash. 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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