Click here

ECD SYSTEM(w/ DPF), Diagnostic DTC:P0115, P0117, P0118

Click here
Click here
DTC Code DTC Name
P0115 Engine Coolant Temperature Circuit
P0117 Engine Coolant Temperature Circuit Low Input
P0118 Engine Coolant Temperature Circuit High Input
Click here

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.

Tip:

If DTC P0115, P0117 or P0118 is stored, the ECM operates the fail-safe function in which the engine coolant temperature is assumed to be 80°C (176°F).

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0115 Engine Coolant Temperature Circuit Open or short in the engine coolant temperature sensor circuit for 0.5 seconds (1 trip detection logic).

  • Open or short in engine coolant temperature sensor circuit

  • Engine coolant temperature sensor

  • ECM

 Comes on DTC stored
P0117 Engine Coolant Temperature Circuit Low Input Short in the engine coolant temperature sensor circuit for 0.5 seconds (1 trip detection logic).

  • Short in engine coolant temperature sensor circuit

  • Engine coolant temperature sensor

  • ECM

 Comes on DTC stored
P0118 Engine Coolant Temperature Circuit High Input Open in the engine coolant temperature sensor circuit for 0.5 seconds (1 trip detection logic).

  • Open in engine coolant temperature sensor circuit

  • Engine coolant temperature sensor

  • ECM

 Comes on DTC stored
Table 1. Related Data List
DTC No. Data List
P0115 Coolant Temp
P0117
P0118
Tip:

  • If DTC P0115, P0117 and/or P0118 is stored, the following symptoms may appear:


    • Misfire

    • Combustion noise

    • Black smoke

    • White smoke

    • Lack of power

  • When DTC P0115, P0117 and/or P0118 is stored, check the engine coolant temperature by entering the following menus: Powertrain / Engine and ECT / Data List / Coolant Temp.

    Table 2. Reference
    GTS Displayed Malfunction
    -40°C (-40°F) Open circuit
    140°C (284°F) or higher Short circuit
Click here

CONFIRMATION DRIVING PATTERN

DTC No. DTC Detection Drive Pattern
P0115 Ignition switch ON for 0.5 seconds or more
P0117
P0118
Table 3. *a Engine Coolant Temperature Sensor
Click here

WIRING DIAGRAM

Click here

CAUTION / NOTICE / HINT

Note:

After replacing the ECM, the new ECM needs registration (Click here ) and initialization (Click here).

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.

Click here

PROCEDURE


  1. Click here

    READ VALUE USING GTS (ENGINE COOLANT TEMPERATURE)


    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. Read the value.

      OK
      70 to 90°C (158 to 194°F) with warm engine
      Result
      Result Proceed to
      -40°C (-40°F) A
      140°C (284°F) or higher B
      70 to 90°C (158 to 194°F) C
      Tip:

      • If there is an open circuit, the GTS indicates -40°C (-40°F).

      • If there is a short circuit, the GTS indicates 140°C (284°F) or higher.


  2. Click here

    READ VALUE USING GTS (CHECK FOR OPEN IN WIRE HARNESS)


    1. B00291FC23
      *1 Engine Coolant Temperature Sensor
      *2 ECM
      *a

      Front view of wire harness connector

      (to Engine Coolant Temperature Sensor)

      Disconnect the engine coolant temperature sensor connector.

    2. Connect terminals 1 and 2 of the engine coolant temperature sensor wire harness side connector.

    3. Connect the GTS to the DLC3.

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

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


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




    6. Read the value.

      OK
      140°C (284°F) or higher

    7. Reconnect the engine coolant temperature sensor connector.

      Result
      Proceed to
      OK
      NG

  3. Click here

    CONFIRM GOOD CONNECTION TO SENSOR. IF OK, REPLACE ENGINE COOLANT TEMPERATURE SENSOR


    1. Replace the engine coolant temperature sensor.

      Click here

      Result
      Proceed to
      NEXT

  4. Click here

    CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)


    1. Disconnect the engine coolant temperature sensor connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      C125-2 - C57-34 (THW) Always Below 1 Ω
      C125-1 - C57-27 (ETHW) Always Below 1 Ω

    4. Reconnect the engine coolant temperature sensor connector.

    5. Reconnect the ECM connector.

      Result
      Proceed to
      OK
      NG

  5. Click here

    CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM.


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

  6. Click here

    READ VALUE USING GTS (CHECK FOR SHORT IN WIRE HARNESS)


    1. B00252BC36
      *1 Engine Coolant Temperature Sensor
      *2 ECM

      Disconnect the engine coolant temperature sensor connector.

    2. Connect the GTS to the DLC3.

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

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


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




    5. Read the value.

      OK
      -40°C (-40°F)

    6. Reconnect the engine coolant temperature sensor connector.

      Result
      Proceed to
      OK
      NG

  7. Click here

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR


    1. Replace the engine coolant temperature sensor.

      Click here

      Result
      Proceed to
      NEXT

  8. Click here

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Clear the DTCs.


      1. Powertrain > Engine and ECT > Clear DTCs


    3. Turn the ignition switch to ON for 1 second.

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

    5. Confirm that the DTC is not output again.


      1. Powertrain > Engine and ECT > Trouble Codes


      Result
      Proceed to
      NEXT

    • NEXT

      END

  9. Click here

    CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)


    1. Disconnect the engine coolant temperature sensor connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      C125-2 or C57-34 (THW) - Body ground and other terminals Always 10 kΩ or higher

    4. Reconnect the engine coolant temperature sensor connector.

    5. Reconnect the ECM connector.

      Result
      Proceed to
      OK
      NG

  10. Click here

    REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

  11. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.

      Result
      Proceed to
      NEXT