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.
2002 Toyota PriusFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Component Location |
|---|---|
| A/C Amplifier | Behind center of dash. See Figure. |
| Air Bag Sensor Assembly | Behind lower center of dash. See Figure. |
| Battery Blower Motor Controller | On left side of luggage compartment. See Figure. |
| Battery ECU | Beside system main relay, above left rear wheelwell. See Figure. |
| Blower Motor Linear Controller | Behind right center of dash. See Figure. |
| Body ECU | On right side of instrument panel J/B. See Figure. |
| Brake ECU | Behind left center of dash. See Figure. |
| EMPS ECU | Behind right end of dash. See Figure. |
| Engine Control Module | Behind right end of dash. See Figure. |
| Gateway ECU | Behind upper center of dash. See Figure. |
| Hybrid Vehicle Control ECU | Behind right side of dash, forward of glove box. See Figure. |
| Navigation ECU | Near base of left "C" pillar. See Figure. |
| Shift Lock ECU | Behind left center of dash. See Figure. |
| Transponder Key Computer | Behind upper left side of dash. See Figure. |
| Wireless Door Control Receiver | Behind upper 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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