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

INTAKE AIR TEMPERATURE (IAT) SENSOR
The Intake Air Temperature (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 control.




CIRCUIT DIAGRAM







HARNESS INSPECTION PROCEDURES

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.




P0112, P0113 - TROUBLESHOOTING PROCEDURES

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