2003 Toyota Matrix Base, FWD, AutomaticFACTORY OEM SERVICE PROCEDURE

A/C-Cut Control System Circuit: Prius

WARNING: Read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONSΒ .

For A/C cut control system circuit inspection, see Fig 1-Fig 3 . For engine control module and A/C amplifier location, see Fig 4.

Fig 1: A/C Cut Control Circuit Description, Diagram & Circuit Inspection With Toyota Hand-Held Tester - Step 1 (Prius)
G00227190Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
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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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