Mass Air Flow Meter Inspection

Engine. Lexus Gs430, Gs300. Uzs190 Grs190
3Uz-Fe Engine Control System. Lexus Gs430, Gs300. Uzs190 Grs190

  1. INSPECT INTAKE AIR FLOW METER

Mass Air Flow Meter -- Inspection



1. INSPECT INTAKE AIR FLOW METER


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Control System.Sfi System.Mass Air Flow Meter Inspection

  1. Check the output voltage.

    1. Apply battery voltage across terminals 1 (+B) and 2 (EVG).

    2. Using a voltmeter, connect the positive (+) tester probe to terminal 3 (VG), and negative (-) tester probe to terminal 2 (EVG).

    3. Blow air into the MAF meter, and check that the voltage fluctuates.

  1. Measure the resistance between terminals 4 (THA) and 5 (ETHA).

    Standard resistance:
    Condition
    		Specified Condition
    -20°C (-4°F)
    		13.6 to 18.4 kΩ
    20°C (68°F)
    		2.21 to 2.69 kΩ
    60°C (140°F)
    		0.493 to 0.667 kΩ
    If the result is not as specified, replace the MAF meter.