A/C Switch
When A/C is turned on, input signal is delivered to Engine Control Module (ECM). The ECM uses input signal to control engine idle speed during A/C operation.
NOTE:
Airflow meter may be referred to as Mass Airflow (MAF) meter.
NOTE:
Airflow meter also contains an intake air temperature sensor which is used to measure intake air temperature. See INTAKE AIR TEMPERATURE SENSOR under INPUT DEVICES.