Air Flow Sensor

Disconnect ECU connector. Connect 1 ohmmeter lead to pin 21 and the other to pin 22. Resistance with flap in a full open position should be 40-60 ohms. Resistance with flap in a fully closed position should be 290-360 ohms. Maximum resistance with flap in motion is measured between pin 21 and 22. Resistance should be approximately 700 ohms. Maximum resistance with flap closed is measured between pin 21 and 10. Resistance should be approximately 360 ohms.