Lexus RX300, 330 3 2000-06
Mass Air Flow (MAF) Sensor
Using an ohmmeter, measure the resistance between terminals THA and E2.
If the resistance is not as specified, replace the MAF meter.
Fig. Terminals THA and E2
Fig. Temperature/resistance table
Connect the MAF meter connector.
Using a voltmeter, connect the positive (+) tester probe to terminal VG, and negative (-) tester probe to terminal E3.
Blow air into the MAF meter, and check that the voltage fluctuates.
If operation is not as specified, replace the MAF meter.