LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 52 (Engine Controls And Fuel - 1.4L (LV7) - DTC P0010 To DTC P0366) >> Diagnostic Information and Procedures >> DTC P00F4-P00F6: Intake Air Humidity Sensor Circuit >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify that DTC P0641, P0651, P0697, P06A3, or P06D2 is not set.
    • If none of the DTCs are set 
    3. NOTE:

    To minimize the effects of residual engine heat and sensor internal heating elements, perform Steps 3 and 4 of this verification procedure only if the ignition has been OFF for 8 hours or more.

  3. Verify the following scan tool parameters are within 25°C (45°F) of each other.
    • Start-Up IAT Sensor 1
    • IAT Sensor 2
    • 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%.
    5. NOTE:

    On vehicles equipped with Auto Start/Stop, it may be necessary to OPEN the hood to enable the engine to idle.

    • If not between 5 and 90% 

      Refer to Circuit/System Testing.

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

      Refer to Circuit/System Testing.

    • If the DTC does not set 
  8. All OK
scientia non olet · About LEMON Manuals