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

The Intake Air Thermosensor is an integral part of the airflow meter. This input signal is utilized by the ECU in it calculations for these outputs:

Fuel injection quantity
Idle speed control
Purge control solenoid valve
Pressure regulator solenoid valve

Normal sensor resistance measurements are as follows:

TEMPERATURE / RESISTANCE (K OHMS)

-4°F (-20°C) / 13.6K - 18.4K
68°F (20°C) / 2.2K - 2.7K
140°F (60°C) / 0.4K - 0.7K