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.
2003 Toyota Matrix Base, 4WDFACTORY OEM SERVICE PROCEDURE
Removal & Installation (MR2)
- Ensure ignition is off.
- Note location of Engine Control Module (ECM). See ECM LOCATION table.
- Remove luggage compartment lids, luggage compartments, quarter trim panels, lower trim covers, partition board and cover for access to ECM. See Fig 1. For additional information on removal of luggage compartment components, see FUEL PUMP under FUEL SYSTEMS.
- Remove ECM. To install, reverse removal procedure.
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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