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.
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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 23 (ENGINE CONTROL SYSTEM & COMPONENT TESTING - 4-CYLINDER)MODULES, MOTORS, RELAYS & SOLENOIDSIG2 RELAYMR2
2004 Toyota Matrix XR, FWD, Standard
IG2 Relay: MR2
2004 Toyota Matrix XR, FWD, StandardSECTION MR2
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tacoma, 2002 Toyota RAV4, 2002 Toyota Prius, 2002 Toyota MR2, and 2002 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
- Remove IG2 relay from relay box on firewall at driver's side front corner of engine compartment. See Figure.
- To test IG2 relay continuity, using ohmmeter, check for continuity and no continuity between specified terminals on IG2 relay. See Figure.
- To test IG2 relay operation, apply battery voltage and ground to IG2 relay. Using ohmmeter, check for continuity between specified terminals on IG2 relay. See Figure. Replace IG2 relay if defective.
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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.