Intake Air Temperature Sensor

Pull off airflow sensor plug. Connect an ohmmeter to terminals No. 1 and 4 of airflow sensor (on control unit terminal No. 6 and 22). Reading at 32°F (0°C)= 4.4 to 6.8 k/ohms. If temperature sensor has an open circuit, should be richer mixture. At 60 to 85°F (15 to 30°C) = 1.4 to 3.6 k/ohms, At 105°F (40°C) = 1.0 to 1.3 k/ohms. If temperature sensor with grounded circuit, should be leaner mixture. It is important that intake air temperature be 60-85°F (15-35°C) for CO level adjustments.