2000 Toyota MR2FACTORY OEM SERVICE PROCEDURE

Test No. 4: Power Window Control Switch Circuit: Testing

  1. Check operation of power window control switch. See POWER WINDOWS - CARS article. If power window control switch operates properly, go to next step. If power window control switch is defective, replace power window control switch.
  2. Check for faulty connectors and wiring between power window control switch and body ECU. See WIRING DIAGRAMSΒ .
  3. Repair wiring or connectors as necessary. If connectors and wiring are okay, go to next test listed. See appropriate TROUBLE SHOOTING SYMPTOMS table under TROUBLE SHOOTING.
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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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