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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls And Fuel - 2.0L (LTG) - DTC P0010 To DTC P0333 >> Diagnostic Information and Procedures >> DTC P0112, P0113, or P0114: Intake Air Temperature (IAT) Sensor 1 >> Component Testing

Component Testing

Multifunction Intake Air Sensor

  1. Ignition OFF, disconnect the harness connector at the B75C Multifunction Intake Air Sensor.
    2. NOTE:

    A thermometer can be used to test the sensor off the vehicle.

  2. Test the IAT Sensor 1 by varying the sensor temperature while monitoring the sensor resistance. Compare the readings with the Temperature Versus Resistance - Intake Air Temperature Sensor (Delco) table for Hitachi Sensors. The resistance values should be in range of the table values.
    • If not within the specified range 

      Replace the B75C Multifunction Intake Air Sensor.

    • If within the specified range 
  3. All OK.
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