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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 16 (ENGINE CONTROL SYSTEM SELF-DIAGNOSTICS - V6)DIAGNOSTIC TESTSDTC P0125: INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROLTEST DRIVE CONFIRMATION
2004 Toyota Matrix XR, FWD, Standard

Test Drive Confirmation

2004 Toyota Matrix XR, FWD, StandardSECTION Test Drive Confirmation
WARNING: This page is about a different car, the 2002 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition off. Connect Toyota hand-held tester or scan tool to Data Link Connector (DLC) No. 3. See Figure. Switch Toyota hand-held tester from NORMAL mode to CHECK mode. Start engine and allow engine to idle for 100 seconds or more. Go to next step.
  2. Drive vehicle at 24 MPH or more for 20 seconds or more. Let engine idle for 20 seconds or more. Repeat driving and idling portion of procedure 3 more times. Let engine idle for 30 seconds or more. Using hand-held tester or scan tool, check A/F sensor voltage. If malfunction exists, MIL will illuminate.
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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.