MASS AIR FLOW METER INSPECTION

PROCEDURE


  1. INSPECT INTAKE MASS AIR FLOW METER SUB-ASSEMBLY


    1. A01HE3WC27
      *a Platinum Hot Wire (Heater)

      Perform a visual check for any foreign matter on the platinum hot wire (heater) of the intake mass air flow meter sub-assembly as shown in the illustration.

      OK
      There is no foreign matter.

    2. Check the intake air temperature sensor (built into the intake mass air flow meter sub-assembly).


      1. A01HERDC09
        *a

        Component without harness connected

        (Intake Mass Air Flow Meter Sub-assembly)

        Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified 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 intake mass air flow meter sub-assembly.