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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P205B - P2BAA) And Symptoms) >> Diagnostic Information And Procedures >> DTC P2199: Intake Air Temperature (IAT) Sensor 1-2 Not Plausible >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition On.
  2. Verify that DTC P0097, P0098, P0099, P00F4, P00F5, P00F6, P0102, P0103, P0112, P0113, P0114, P0641, P0651, P0697, or P06A3 is not set.
    • Go to next step: 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. Ignition ON.
  4. Verify the following scan tool parameters are within 55°C (99°F) of each other.
    • Start-Up IAT Sensor 1
    • Start-Up IAT Sensor 2
    • Start-Up IAT Sensor 3
    • If not within 55°C (99°F) 

      Refer to Circuit/System Testing.

    • Go to next step: If within 55°C (99°F) 
  5. Engine running, verify the following scan tool parameters are between: -38 and +149°C (-36 and +300°F).
    • IAT Sensor 1
    • IAT Sensor 2
    • 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) 
  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.

    • Go to next step: If the DTC does not set 
  8. All OK
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