Air flow meter wire connector clamp bar
2. Turn the ignition on, then using a voltmeter with directional probes, check the voltage between each connector terminal and ground. The battery voltage should be between 6 and 10 volts at the VC terminal and between 0.7 and 2.7 volts at the VS terminal at the terminal marked FC and VB.
3. If the voltages do not match the values, check the wiring and the main fuse.
4. Remove the bracket and disconnect the wiring connector from the air flow meter.
5. Using an ohmmeter, check that the resistance at the E2 and VS terminals of the connector is greater than 20 ohms. At the E2 and VC terminals, the resistance should be between 100 and 300 ohms, at the E2 and VB terminals from 200 to 400 ohms, and at the E1 and FC terminals, infinity.
6. The resistance at terminals E2 and TNA depends on the air temperature within the air filter. Remove the air filter cover (photo) and using a thermometer, heat the source (for example, a heating hair dryer) to check the resistance as given in the Specifications.
Air filter cover mounting bolt (marked with an arrow)
The full text is on the website Mazbook
7. Manually open the inner plate of the air flow meter and check. that the resistance at terminals E2 and VS is less than 400 ohms. There should be zero resistance across terminals E1 and FC.
EGI Air Flow Meter Connector Clip |
Air filter heating |
8. Check that the inner plate moves freely and, if necessary, use compressed air to clear out any debris or deposits.
9. Install the air cleaner cover and wiring connector.