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Mass Air Flow Meter: Inspection

  1. INSPECT MASS AIR FLOW METER 
    1. Visually check for any foreign matter on the platinum hot wire (heater) of the mass air flow meter.

      OK: There is no foreign matter. 

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

      Fig 1: Identifying Mass Air Flow Meter
      G05136390Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value (s) in the table below.

      Standard resistance 

      RESISTANCE SPECIFIED CONDITIONS

      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) 0.49 to 0.67 kΩ