The intake air temperature sensor is built-into mass air flow sensor (1). The sensor detects intake air temperature and transmits a signal to the ECM.

The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise.
<Reference data>
Intake air temperature [°C (°F)]
| Voltage* (V)
| Resistance (kΩ)
|
25 (77)
| 3.3
| 1.800 - 2.200
|
80 (176)
| 1.2
| 0.283 - 0.359
|
*: These data are reference values and are measured between ECM terminals 44 (Intake air temperature sensor) and 22 (Sensor ground).