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Home >> Cadillac >> 2006 >> CTS Base, 2.8 T, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 2.8L - DTC P0008 To P0128 >> DTC P0111 >> Component Testing

Component Testing

  1. Ignition OFF, disconnect the harness connector of the IAT sensor.
  2. IMPORTANT: A thermometer can be used to test the sensor off the vehicle.
  3. Test the IAT sensor by varying the sensor temperature while monitoring the sensor resistance. Compare the readings with the Temperature vs Resistance - Intake Air Temperature (IAT) Sensor table and verify that the resistance is within 5 percent of the specification.
    • If the resistance vs temperature is not within 5 percent, replace the IAT sensor.