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.
1990 Lexus LS 400FACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Miscellaneous
MISCELLANEOUS LOCATION
| Component | Location |
|---|---|
| A/C Power Transistor | Behind right side of dash, in evaporator case. |
| Blower Fan Motor Resistor | Behind right side of dash, in evaporator case. |
| Diagnostic Check Connector | On bracket, on top of front of engine. See Figure. |
| Electronic Modulated Air Suspension Actuators | On top of each shock absorbers. |
| Fuel Pump Resistor | On right front inner fender panel. |
| Total Diagnostic Communication Link (TDCL) Connector | Under left side of dash. See Figure. |
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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