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Home >> Lexus >> 2023 >> LX 600 Premium >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (W/O Canister Pump Module) - Diagnostic Codes (2 Of 5) >> SFI SYSTEM (w/o Canister Pump Module) >> DTC P0115-11: Engine Coolant Temperature Sensor 1 Circuit Short to Ground [12/2021 - ] >> Procedure
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DTC P0115-11: Engine Coolant Temperature Sensor 1 Circuit Short to Ground [12/2021 - ]: Procedure

  1. READ VALUE USING GTS (CHECK FOR SHORT IN WIRE HARNESS) 
    GTY802873Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 Engine Coolant Temperature Sensor
    *2 ECM

    Pre-procedure1

    1. Disconnect the engine coolant temperature sensor connector.

      Procedure1

    2. According to the display on the GTS, read the Data List.

      Powertrain > Engine > Data List 

      Tester Display
      Coolant Temperature

      Result

      Result Proceed to
      The value of Coolant Temperature is -40°C A
      None of the above conditions are met B

      HINT: 

      -40°C (-40°F)

      Post-procedure1

    3. None

    Result: 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

    Refer to REMOVAL [12/2021 - ]

    HINT: 

    Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.

    Refer to INITIALIZATION [12/2021 - ]

    Result: 

    See step  2

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

    Pre-procedure1

    1. Disconnect the engine coolant temperature sensor connector.
    2. Disconnect the ECM connector.

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      C28-2 (THW) or C37-125 (THW) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [12/2021 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR