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Mass Air Flow Meter: Inspection: Inspection

WARNING: This page is about a different variant/trim than selected.
  1. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY 
    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: Identifying Mass Air Flow Meter Sub-Assembly
      GTY194951Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

      There is no foreign material.

    2. Check the intake air temperature sensor (built into the mass air flow meter).
      1. Measure the resistance according to the value(s) in the table below.
        Fig 2: Identifying Mass Air Flow Meter Connector
        GTY194994Courtesy 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) 0.49 to 0.67 kΩ

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