Air Flow Meter/Sensor: Testing and Inspection

INSPECT MASS AIR FLOW METER




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




If the result is not as specified, replace the MAF meter.