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ECD SYSTEM(w/ DPF), Diagnostic DTC:P0116

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DTC Code DTC Name
P0116 Engine Coolant Temperature Circuit Range / Performance
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DESCRIPTION

A thermistor is built into the engine coolant temperature sensor and it changes its resistance value according to the engine coolant temperature.

The structure of the sensor and connection to the ECM is the same as that of the intake air temperature sensor.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0116 Engine Coolant Temperature Circuit Range / Performance

Either of the following condition is met (2 trip detection):


  • When engine is started cold and warmed up, the engine coolant temperature sensor value does not change

  • After the warmed up engine is stopped and the next cold engine start is performed, the engine coolant temperature sensor value does not change

  • Thermostat

  • Engine coolant temperature sensor

 Comes on DTC stored
Table 1. Related Data List
DTC No. Data List
P0116 Coolant Temp
Tip:

  • If DTC P0116 is stored, the following symptoms may appear:


    • Misfire

    • Combustion noise

    • Black smoke

    • White smoke

    • Lack of power

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CONFIRMATION DRIVING PATTERN

DTC No. DTC Detection Drive Pattern
P0116 With the engine coolant temperature below 60°C (140°F), start the engine and idle it for 5 minutes. Then drive the vehicle at a speed of 40 km/h (25 mph) or more for a total of 5 minutes or more and check that the engine coolant temperature changes by 1°C (1.8°F) or more.
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MONITOR DESCRIPTION



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CAUTION / NOTICE / HINT

Tip:

Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

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PROCEDURE


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    CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0116)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    4. Read the DTCs.


      1. Powertrain > Engine and ECT > Trouble Codes


      Result
      Result Proceed to
      P0116 is output A
      P0116 and other DTCs are output B

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    INSPECT THERMOSTAT


    1. Remove the thermostat.

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    2. Measure the valve opening temperature of the thermostat.

      Standard opening temperature
      80 to 84°C (176 to 183°F)
      Tip:

      In addition to the above check, confirm that the valve is completely closed when the temperature is below the standard.

    3. Reinstall the thermostat.

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      Result
      Proceed to
      OK
      NG

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    REPLACE ENGINE COOLANT TEMPERATURE SENSOR


    1. Replace the engine coolant temperature sensor.

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      Result
      Proceed to
      NEXT

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    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Enter the following menus: Powertrain / Engine and ECT / Data List / Coolant Temp.


      1. Powertrain > Engine and ECT > Data List
        Tester Display
        Coolant Temp




    4. Check that the engine coolant temperature is 60°C (140°F) or less.

    5. Start the engine.

    6. Idle the engine for 5 minutes, and then drive the vehicle at a speed of 40 km/h (25 mph) or more for a total of 5 minutes or more.

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    7. Check that the engine coolant temperature changes by 1°C (1.8°F) or more.

      Result
      Proceed to
      NEXT

    • NEXT

      END

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    REPLACE THERMOSTAT


    1. Replace the thermostat.

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      Result
      Proceed to
      NEXT