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Home >> Mitsubishi >> 2003 >> Lancer Evolution >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Sensors & Switches >> Sensors >> Intake Air Temperature (IAT) Sensor
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Intake Air Temperature (IAT) Sensor

NOTE: IAT sensor is a part of volume airflow sensor assembly.
  1. Disconnect Volume Airflow (VAF) sensor connector. Check resistance between VAF sensor connector terminals No. 5 and 6. Compare air temperature and IAT sensor resistance value with standard values. See IAT SENSOR RESISTANCE  table.
  2. Using hair dryer, heat IAT sensor and check resistance. Resistance should decrease as IAT temperature increases.
IAT SENSOR RESISTANCE

Temperature - °F (°C) Ohms
32 (0) 5300-6700
68 (20) 2300-3000
104 (40) 1000-1500
176 (80) 300-420