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.
1994 Toyota Tercel BaseFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| ABS ECU | Behind left side of dash. See Figure. |
| Air Bag Center Sensor Assembly | Behind center of dash, under theft deterrent ECU. See Figure. |
| Electronic-Controlled Trans. ECU (A/T) | Behind center of dash, integral within ECM. See Figure. |
| Engine Control Module (ECM) | Behind center of dash, under ashtray. See Figure. |
| Shift Lock Control ECU (A/T) | Under center console, behind gear selector. See Figure. |
| Theft Deterrent ECU | Behind center of dash, below radio and ashtray. 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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