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Home >> Chevrolet >> 2017 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 29 (Engine Controls And Fuel - 1.8L (LKN) - DTC P0446 To DTC P2635 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P111E: Engine Coolant Temperature Sensor Not Plausible >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Verify the cooling system is filled to the correct coolant level. Refer to Cooling System Leak Testing and Cooling System Draining and Filling (Static)Cooling System Draining and Filling (GE 47716)
    • If the coolant level is not filled to the correct level 

      Repair as necessary.

    • If the coolant level is correct 
  2. Verify that DTC P00B3, P00B4, P0111, P0112, P0113, P0114, P0117, P0118, P0128, P0601, P112F, P1621 or P2610 is not set.
    • If DTC P00B3, P00B4, P0111, P0112, P0113, P0114, P0117, P0118, P0128, P0601, P112F, P1621 or P2610 is not set 
  3. Vehicle OFF for a minimum of 8 hours.
  4. Vehicle in Service Mode
  5. Verify with a scan tool that IAT Sensor 1, Radiator Coolant Temperature Sensor, Ambient Temperature Sensor and the ECT Sensor are within 15°C (59°F) of each other.
    • If the Radiator Coolant Temperature Sensor parameter is not within 15°C (59°F) of the ECT Sensor and IAT Sensor 1 or ambient temperature. 

      Perform the diagnostic for DTC P00B3 or P00B4, Refer to Diagnostic Trouble Code (DTC) List - Vehicle

    • If the IAT Sensor 1 parameter is not within 15°C (59°F) of the ECT Sensor and Radiator Coolant Temperature Sensor or ambient temperature. 

      Perform the diagnostic for DTC P0112, P0113 or P0114, Refer to Diagnostic Trouble Code (DTC) List - Vehicle

    • If the ECT Sensor parameter is not within 15°C (59°F) of the IAT Sensor 1 and Radiator Coolant Temperature Sensor or ambient temperature. 

      Refer to Circuit/System Testing.

    • If all the parameters are within 15°C (59°F) of each other and ambient temperature. 
  6. Vehicle OFF.
  7. 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.
  8. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • If the DTC does not set 
  9. All OK.
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