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Home >> Lexus >> 2019 >> LS 500 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (11 Of 14) >> SFI System >> DTC P2182-11: Engine Coolant Temperature Sensor 2 Circuit Short to Ground [12/2017 - ] >> Procedure

DTC P2182-11: Engine Coolant Temperature Sensor 2 Circuit Short to Ground [12/2017 - ]: Procedure

  1. READ VALUE USING TECHSTREAM (CHECK FOR SHORT IN WIRE HARNESS) 
    GTY802872Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 Engine Coolant Temperature Sensor (for Cylinder Head Side)
    *2 ECM
    1. Disconnect the engine coolant temperature sensor (for cylinder head side) connector.
    2. Connect the Techstream to the DLC3.
    3. Turn the engine switch on (IG).
    4. Turn the Techstream on.
    5. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature Sensor2.

      Powertrain > Engine > Data List 

      Tester Display
      Coolant Temperature Sensor2
    6. According to the display on the Techstream, read the Data List.

      OK

      Techstream Display Specified Condition
      Coolant Temperature Sensor2 -40°C (-40°F)

      HINT: 

      Perform "Inspection After Repair" after replacing the engine coolant temperature sensor (for cylinder head side).

      Refer to INITIALIZATION [12/2017 - 10/2020] , or refer to INITIALIZATION [10/2020 - 10/2023] , or refer to INITIALIZATION [10/2023 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR (FOR CYLINDER HEAD SIDE). Refer to  REMOVAL [12/2017 - ] 

    Result: 

    NG 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR (FOR CYLINDER HEAD SIDE) - ECM) 
    1. Disconnect the engine coolant temperature sensor (for cylinder head side) 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
      D20-2 (THW2) or D1-87 (THW2) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR