СИСТЕМА ECD, Diagnostic DTC:P0116

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

DESCRIPTION

A thermistor, whose resistance value varies according to the engine coolant temperature, is built into the engine coolant temperature sensor.

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 Problem

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

  • 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

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 higher.

MONITOR DESCRIPTION

  • Engine coolant temperature sensor cold start monitor

    When a cold engine start is performed and then the engine is warmed up, if the engine coolant temperature sensor value does not change, it is determined that a malfunction has occurred. If this is detected in 2 consecutive driving cycles, the MIL is illuminated and a DTC is stored.

  • Engine coolant temperature sensor soak monitor

    If the engine coolant temperature sensor value does not change after the warmed up engine is stopped and then the next cold engine start is performed, it is determined that a malfunction has occurred. If this is detected in 2 consecutive driving cycles, the MIL is illuminated and a DTC is stored.

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.

PROCEDURE

  1. 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.

      Powertrain > Engine and ECT > Trouble Codes
      Result
      ResultProceed to
      DTC P0116 is outputA
      DTC P0116 and other DTCs are outputB
      Tip:

      If any DTCs other than P0116 are output, troubleshoot those DTCs first.

    B

    GO TO DTC CHART Click here Нажмите здесь


    A
  2. INSPECT THERMOSTAT

    1. Inspect the thermostat.

      Click hereНажмите здесь

      Result
      Proceed to
      OK
      NG
    NG Нажмите здесь

    OK
  3. REPLACE ENGINE COOLANT TEMPERATURE SENSOR

    1. Replace the engine coolant temperature sensor.

      Click hereНажмите здесь

      Result
      Proceed to
      NEXT
    NEXT Нажмите здесь

    GO TO STEP 5


  4. REPLACE THERMOSTAT

    1. Replace the thermostat.

      Click hereНажмите здесь

      Result
      Proceed to
      NEXT
    NEXT
  5. 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 / All Data / Coolant Temp.

      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.

      ОСТОРОЖНО

      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 higher.

      Result
      Proceed to
      NEXT
    NEXT

    END