2013 Toyota Matrix S, AWDFACTORY OEM SERVICE PROCEDURE

Mass Air Flow Meter: Inspection: Inspection

  1. INSPECT MASS AIR FLOW METER 
    1. Perform a visual check for any foreign matter on the platinum hot wire (heater) of the mass air flow meter shown in the illustration.
      Fig 1: Inspecting Mass Air Flow Meter
      GTY165818Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

      No foreign matter is attached.

      If the result is not as specified, replace the mass air flow meter.

    2. Measure the resistance according to the value(s) in the table below.
      Fig 2: Identifying Mass Air Flow Meter
      GTY164358Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 (THA) - 2 (E2) -20°C (-4°F) 13.6 to 18.4 kΩ
      1 (THA) - 2 (E2) 20°C (68°F) 2.21 to 2.69 kΩ
      1 (THA) - 2 (E2) 60°C (140°F) 0.493 to 0.667 kΩ

      If the result is not as specified, replace the mass air flow meter.

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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.

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