Air Temperature Sensor ( Ambient / Intake ): Description and Operation

INTAKE AIR TEMPERATURE SENSOR
The intake air temperature sensor is built into the air cleaner, detects intake air temperature and transmits a signal to the Engine Control Module (ECM). The temperature sensing unit employs a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decrease in response to the temperature rise. This sensor is not directly used to control the engine system. It is used only for the on-board diagnosis.