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 4Runner BaseFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Component Location |
|---|---|
| A/C Amplifier | Behind center of dash. See Figure. |
| Back Door ECU | On left side of back door. See Figure. |
| Blower Motor Linear Controller (Automatic A/C) | Behind right side of dash. |
| Body ECU | On driver side J/B. See Figure. |
| Center Air Bag Sensor Assembly | Behind lower center of dash. See Figure. |
| Engine Control Module | Behind right side of dash. See Figure. |
| Shift Lock Control Computer | Under center of dash, near front of center console. See Figure. |
| Stereo Power Amplifier | Behind center of dash. See Figure. |
| Trailer Converter | At inside left rear of vehicle. |
| Transponder Key Amplifier | Left side of dash, at steering column. See Figure. |
| VSC Actuator | At left rear of engine compartment. |
| VSC ECU | Behind left side of dash. |
| 4WD ECU | At left kick panel. |
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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