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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 (Engine Controls And Fuel - 1.4L (LUJ LUV) - DTC P0010 To DTC P0246) >> Diagnostic Information and Procedures >> DTC P00F4-P00F6: Intake Air Humidity Sensor >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, verify that DTC DTC P0641, P0651, P0697, or P06A3 is not set.
    • If none of the DTCs are set 
    2. NOTE:

    To minimize the effects of residual engine heat and sensor internal heating elements, perform Steps 2 and 3 of this verification procedure only if the ignition has been OFF for 8 hours or more.

  2. Ignition ON.
  3. Verify the following scan tool parameters are within 25°C (45°F) of each other.
    • Start-Up IAT Sensor 1
    • IAT Sensor 2
    • IAT Sensor 3; where equipped
    • If not within 25°C (45°F) 

      Refer to Circuit/System Testing.

    • If within 25°C (45°F) 
  4. Engine idling, verify the scan tool Intake Air Humidity parameter is between 5 and 90 %.
    • If not between 5 and 90 % 

      Refer to Circuit/System Testing.

    • If between 5 and 90 % 
  5. 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.
  6. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • If the DTC does not set 
  7. All OK
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