Air Flow Meter/Sensor: Description and Operation

2Hot-film Mass Air Flow Sensors HFM 5-6.4







One hot-film mass air flow sensor HFM 5-6.4 is located in each of the turbocharger intake pipes on the left and right behind the air cleaner. The mass air flow sensors are matched to the overall air mass of the engine. Each of the two mass air flow sensors can measure an air mass of up to 800 kg/h.