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Home >> Toyota >> 2011 >> Highlander Hybrid Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 69 (Engine Control System (2GR-FE) (Diagnostic Codes (P0010-P0340) & Circuit Tests)) >> SFI System >> DTC P0115: Engine Coolant Temperature Circuit; DTC P0117: Engine Coolant Temperature Circuit Low Input; DTC P0118: Engine Coolant Temperature Circuit High Input >> Procedure

DTC P0115: Engine Coolant Temperature Circuit; DTC P0117: Engine Coolant Temperature Circuit Low Input; DTC P0118: Engine Coolant Temperature Circuit High Input: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. READ VALUE USING TECHSTREAM (ENGINE COOLANT TEMPERATURE) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch on (IG).
    3. Turn the tester on.
    4. Select the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp.
    5. Read the value displayed on the tester.

      Standard

      Between 75°C and 97°C (167°F and 207°F) with warm engine.

      Result

      Temperature Displayed Proceed to
      -40°C (-40°F) A
      140°C (284°F) B
      Between 75°C and 97°C (167°F and 207°F) C

      HINT: 

      • If there is an open circuit, the Techstream indicates -40°C (-40°F).
      • If there is a short circuit, the Techstream indicates 140°C (284°F).

    B → See step   4 

    C → See step   8 

    A: Go to next step 

  2. READ VALUE USING TECHSTREAM (CHECK FOR OPEN IN WIRE HARNESS) 
    1. Disconnect the engine coolant temperature sensor connector.
      Fig 1: Identifying Engine Coolant Temperature Sensor Connector
      GTY294979Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect terminals 1 and 2 of the engine coolant temperature sensor connector on the wire harness side.
    3. Connect the Techstream to the DLC3.
    4. Turn the ignition switch on (IG).
    5. Turn the tester on.
    6. Select the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp.
    7. Read the value displayed on the tester.

      Standard

      140°C (284°F)

      TEXT IN ILLUSTRATION

      *1 Engine Coolant Temperature Sensor
      *2 ECM
      *a Front view of wire harness connector
      (to Engine Coolant Temperature Sensor)
    8. Reconnect the engine coolant temperature sensor connector.

    NG → See step   3 

    OK → See step   9 

  3. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) 
    1. Confirm and connection at the engine coolant temperature sensor.
    2. Disconnect the engine coolant temperature sensor connector.
    3. Connect terminals THW and ETHW of the ECM connector.

      HINT: 

      Before checking, do visual and contact pressure checks on the ECM connector.

    4. Connect the Techstream to the DLC3.
    5. Turn the ignition switch on (IG).
    6. Turn the tester on.
    7. Select the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp.
    8. Read the value displayed on the tester.

      Standard

      140°C (284°F)

    9. Reconnect the engine coolant temperature sensor connector.

    NG → See step   7 

    OK → REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) 

  4. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) 
    1. Disconnect the engine coolant temperature sensor connector.
      Fig 2: Identifying Engine Coolant Temperature Sensor Connector
      GTY296784Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the Techstream to the DLC3.
    3. Turn the ignition switch on (IG).
    4. Turn the tester on.
    5. Select the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp.
    6. Read the value displayed on the tester.

      Standard

      -40°C (-40°F)

      TEXT IN ILLUSTRATION

      *1 Engine Coolant Temperature Sensor
      *2 ECM
    7. Reconnect the engine coolant temperature sensor connector.

    NG → See step   5 

    OK → See step   10 

  5. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) 
    1. Disconnect the engine coolant temperature sensor connector.
    2. Connect the Techstream to the DLC3.
    3. Turn the ignition switch on (IG).
    4. Turn the tester on.
    5. Select the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp.
    6. Read the value displayed on the tester.

      Standard

      -40°C (-40°F)

    7. Reconnect the engine coolant temperature sensor connector.

    NG → See step   6 

    OK → REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM) 

  6. REPLACE ECM. Refer to  COMPONENTS 
  7. REPLACE ECM. Refer to  COMPONENTS 
  8. CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS 
  9. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to  COMPONENTS 
  10. REPLACE ENGINE COOLANT TEMPERATURE SENSOR. Refer to  COMPONENTS 
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