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 206 (CRUISE CONTROL)CIRCUIT TESTSCRUISE MAIN INDICATOR LIGHT CIRCUITINSPECTION PROCEDURE
2004 Toyota Matrix XR, FWD, Standard
Inspection Procedure
2004 Toyota Matrix XR, FWD, StandardSECTION Inspection Procedure
WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
- Turn the ignition switch ON. Measure the voltage between terminals No. 5 (PI) and 16 (GND) of the cruise control ECU connector when the main switch is ON and OFF. The results are OK if there is 10-16 volts when the switch is OFF and if there is below 1.2 volts when the switch is ON. If the results are OK, proceed to the next circuit inspection of the symptom. See PROBLEM SYMPTOM INDEX table. If the results are not OK, go to the next step.
- Check the combination meter. See appropriate INSTRUMENT PANEL article. If the results are OK, check and replace the cruise control ECU. See CRUISE CONTROL ECU under REMOVAL & INSTALLATION. If the results are not OK, replace the combination meter. See appropriate INSTRUMENT PANEL article.
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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.