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Mass Air Flow Meter: Inspection

WARNING: This page is about a different variant/trim than selected.
  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.

      OK: 

      No foreign matter is attached  .

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

      Fig 1: Inspecting Mass Air Flow Meter
      G05386949Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

    Standard Resistance 

    RESISTANCE REFERENCE

    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.

    Fig 2: Identifying Mass Air Flow Meter Connector Terminal
    G05136390Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002