Air Temperature Sensor ( Ambient / Intake ): Testing and Inspection

(IAT) INTAKE AIR TEMPERATURE SENSOR
The intake air temperature sensor, located on the VAF Sensor as shown in the illustration, is a resistor-based sensor for detecting the intake air temperature.
Based on the intake air temperature information from the sensor, the ECM provides necessary fuel injection control.




NOTE: The intake air temperature sensor senses the intake air temperature in the air cleaner to indicate a temperature different from outside temperature.




Using GST




1. Disconnect the volume air flow sensor connectors.




2. Measure resistance between terminals 4 and 6.







3. Measure resistance while heating the sensor with a hair drier.
4. If the value deviates from the standard value or the resistance remains unchanged, replace the volume air flow sensor assembly.







HARNESS INSPECTION PROCEDURE