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.
2004 Toyota Matrix Base, 4WDFACTORY OEM SERVICE PROCEDURE
Starter Relay Test
- Remove starter relay box cover.
- Remove starter relay located in engine compartment junction block. Starter relay is marked "ST".
- Using an ohmmeter, verify continuity between relay terminals No. 1 and 2. See Fig 1. Continuity should not exist between terminals No. 3 and 5. If continuity is not as specified, replace relay.
- Check relay operation by applying battery voltage through terminals No. 1 and 2. See Fig 1. Continuity should now exist between terminals No. 3 and 5. If relay does not test as indicated, replace relay.
- Install starter relay
- Install starter relay box cover.
Factory Service Tools
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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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