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 222 (ENGINE IMMOBILIZER)SELF-DIAGNOSTIC SYSTEMRETRIEVING DIAGNOSTIC TROUBLE CODESUSING INDICATOR LIGHT
2004 Toyota Matrix XR, FWD, Standard
Using Indicator Light
2004 Toyota Matrix XR, FWD, StandardSECTION Using Indicator Light
WARNING: This page is about a different car, the 2003 Lexus IS 300 and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
- Turn the ignition switch ON.
- Using Diagnosis Check Wire No. 2 (SST 09843-18040), connect between terminals 11 (TC) and 3 (E1) of the DLC1. See CONNECTOR IDENTIFICATION .
- Read the diagnostic trouble code (DTC) from the malfunction indicator lamp (MIL). If a diagnostic trouble code is not output, check the terminal 11 (TC) circuit. The ECM controls the immobilizer function on this vehicle, DTC is output with the engine data. As an example, the blinking patterns for codes; normal, 12 and 99 are shown in the charts. See Fig 1.
- When DTC 99 is output, there is a trouble of immobilizer. See PROBLEM SYMPTOM INDEX table.
- After completing the check, disconnect terminals 13 (TC) and 4 (CG) and turn off the display. In the event of 2 or more malfunction codes, indication will begin from the smaller numbered code and continue in order to the larger.
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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.