Airflow Meter

Inspect airflow meter for damage, and ensure measuring plate or cone moves smoothly. See Fig 1 . Disconnect airflow meter electrical connector. Move measuring plate or cone, and measure resistance between terminals. See appropriate AIRFLOW METER TERMINAL RESISTANCE table. Replace sensor as necessary.

AIRFLOW METER TERMINAL RESISTANCE

Terminals ⁽¹⁾

Fully Closed: Ohms

Fully Open: Ohms

E2 & Vs

⁽²⁾ 200-600

20-1000

E2 & Vc

200-400

E2 & THAa ⁽³⁾

-4°F (-20°C)

13,600-18,400

68°F (20°C)

2210-2690

2100-2690

140°F (60°C)

493-667

E1 & Fc

Infinite

⁽¹⁾	See Fig 1 for terminal identification.

⁽²⁾	20-600 ohms on 323 and Protege.

⁽³⁾	Intake air thermosensor.

Fig 1: Airflow Meter Terminal ID (Miata)

Courtesy of MAZDA MOTORS CORP.