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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 135 (Engine Controls And Fuel - 3.6L (LF4 LGX) - DTC P0010 To DTC P0121 LGX) >> Diagnostic Information and Procedures >> DTC P0096 or P0111: Intake Air Temperature (IAT) Sensor (LF4) >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

Multifunction Intake Air Sensor - IAT Sensor 1

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

    A thermometer can be used to monitor the air temperature while testing the sensor off the vehicle.

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

      Replace the B75C Multifunction Intake Air sensor.

    • If within the table values. 
  4. All OK

Multifunction Intake Air Sensor - IAT Sensor 2

  1. Test the IAT Sensor 2 by varying the sensor temperature while monitoring the air temperature with a thermometer. Compare the readings with the scan tool IAT Sensor 2 parameter. The values should be within 5%.
    • If not within 5% 

      Replace the B75C Multifunction Intake Air sensor.

    • If within 5% 
  2. All OK.
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