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Air Flow Meter/Sensor: Testing and Inspection

INSPECTION

INSPECT MASS AIR FLOW METER

a. Check the output voltage.
1. Apply battery voltage across terminals 1 (+B) and 2 (E2G).
2. Connect the positive (+) tester probe to terminal 3 (VG), and negative (-) tester probe to terminal 2 (E2G).
3. Blow air into the Mass Air Flow (MAF) meter, and check that the voltage fluctuates.

b. Measure the resistance between terminals 4 (THA) and 5 (E2).