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Mass Air Flow Meter: Inspection: Inspection

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  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: Identifying Platinum Hot Wire (Heater) Of Mass Airflow Meter
      GTY121018Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

      There is no foreign material.

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

    2. Measure the resistance between the terminals.
      Fig 2: Identifying Terminals Of Mass Air Flow Meter Connector
      GTY128227Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Specified Resistance

      Tester Connection Condition Condition
      1(THA) - 2(E2) -20°C (-4°F) 13.6 to 18.4 kΩ
      20°C (68°F) 2.21 to 2.69 kΩ
      60°C (140°F) 0.49 to 0.67 kΩ

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