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Home >> Hyundai >> 2000 >> Elantra GLS Sedan L4-2.0L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Air Temperature Sensor ( Ambient / Intake ) >> Testing and Inspection
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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.
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