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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Controls And Fuel - 2.5L (LCV) - Diagnostic Information And Procedures (P0010 - P034B)) >> Diagnostic Information And Procedures >> DTC P0112, P0113, Or P0114: Intake Air Temperature (IAT) Sensor 1 Circuit >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
NOTE:

To minimize the effects of residual engine heat and sensor internal heating elements, perform Steps 1 and 2 of this verification procedure only if the ignition has been OFF for 8 hours or more.

  1. Ignition ON.
  2. Verify the following scan tool parameters are within 30°C (54°F) of each other.
    • Start-Up IAT Sensor 1
    • IAT Sensor 2
    • Start-up ECT
    • If not within 30°C (54°F) 

      Refer to Circuit/System Testing.

    • Go to next step: If within 30°C (54°F) 
  3. Engine idling, verify the following scan tool parameters are between: -38 and +149°C (-36 and +300°F).
    • IAT Sensor 1
    • IAT Sensor 2
    • ECT Sensor
    • If not between: -38 and +149°C (-36 and +300°F) 

      Refer to Circuit/System Testing.

    • Go to next step: If between: -38 and +149°C (-36 and +300°F) 
  4. Operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.
  5. Verify the DTCs do not set.
    • If any of the DTCs set 

      Refer to Circuit/System Testing.

    • Go to next step: If none of the DTCs set 
  6. All OK
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