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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 178 (POWER & HEATED SEATS)COMPONENT TESTSMOTOR PTC THERMISTOR (RECLINING)
2004 Toyota Matrix XR, FWD, Standard

Motor PTC Thermistor (Reclining)

2004 Toyota Matrix XR, FWD, StandardSECTION Motor PTC Thermistor (Reclining)
WARNING: This page is about a different car, the 2002 Lexus GS 430 and 2002 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect the positive (+) lead from the battery to terminal No. 2, the positive (+) lead from the ammeter to terminal No. 1 and the negative (-) lead to the battery negative (-) terminal, then recline the seat back to the most forward position. See CONNECTOR IDENTIFICATION . Continue to apply voltage, check that the current changes to less than 1 ampere within 4-90 seconds.
  2. Disconnect the leads from terminals. Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal No. 1 and the negative (-) lead to terminal No. 2, check that the seat back begins to fall backwards. If operation is not as specified, replace the seat adjuster. See POWER SEAT  under REMOVAL & INSTALLATION.
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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.