Air Flow Meter/Sensor: Testing and Inspection

1. INSPECT MAF METER RESISTANCE.




- Using an ohmmeter, measure the resistance between terminals THA and E2.





- If the resistance is not as specified, replace the MAF meter.


2. INSPECT MAF METER OPERATION.




- Connect the MAF meter connector.
- Connect the negative (-) terminal cable to the battery.
- Using a voltmeter, connect the positive (+) tester probe to terminal VG, and negative (-) tester probe to terminal EVG.
- Turn the ignition switch ON.
- Blow air into the MAF meter, and check that the voltage fluctuates,
- If operation is not as specified, replace the MAF meter.
- Turn the ignition switch OFF.
- Disconnect the negative (-) terminal cable from the battery.
- Disconnect the MAF meter connector.