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

The intake air temperature sensor (IAT Sensor), located on the air cleaner, is a resistor-based sensor for detecting the intake air temperature. According to the intake air temperature information from the sensor, the ECM provides necessary fuel injection amount control.

Circuit Diagram:

Harness Inspection Procedures (Steps 1 - 2):

SENSOR INSPECTION
1. Using the voltmeter, measure the sensor voltage.




2. Measure the voltage between the IAT sensor terminal 1 and 2.

3. If the voltage deviates from the standard value, replace the intake air temperature sensor assembly.

Troubleshooting Procedures:

TROUBLESHOOTING HINTS
Input from intake air temperature sensor is below 0.1 V or above 4.8 V when engine is in a full warm-up condition.