Air Flow Meter/Sensor: Testing and Inspection

MAF METER 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 E21.
- 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.