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Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 2 (Engine Controls And Fuel - 5.3L (L83) Or 6.2L (L86) - DTC P0010 To DTC P0442) >> Diagnostic Information And Procedures >> DTC P0112, P0113 Or P0114: Intake Air Temperature (IAT) Sensor 1 Circuit >> Component Testing >> Multifunction Intake Air Sensor

Multifunction Intake Air Sensor

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the B75C Multifunction Intake Air sensor.
  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 table for Hitachi Sensors. The resistance values should be in range of the table values.
    NOTE: A thermometer can be used to test the sensor off the vehicle.
    • If not within the table values. 

      Replace the B75C Multifunction Intake Air sensor.

    • Go to next step : If within the table values. 
  3. All OK
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