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Home >> Lexus >> 2023 >> LX 600 Base >> 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 P0195-15: Engine Oil Temperature Sensor Circuit Short to Battery or Open [12/2021 - ] >> Procedure

DTC P0195-15: Engine Oil Temperature Sensor Circuit Short to Battery or Open [12/2021 - ]: Procedure

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

    Pre-procedure1

    GTY1052477Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 Engine Oil Temperature Sensor *2 ECM
    *a Front view of wire harness connector
    (to Engine Oil Temperature Sensor)
    - -
    • Disconnect the engine oil temperature sensor connector.
    • Connect terminals 1 (GND) and 2 (TOUT) of the engine oil temperature sensor connector on the wire harness side.
    • According to the display on the GTS, read the Data List.

      Powertrain > Engine > Data List 

      Tester Display
      Engine Oil Temperature Sensor

      Result

      Result Proceed to
      The value of Engine Oil Temperature Sensor is more than 168°C A
      None of the above conditions are met B

      HINT: 

      168°C (334°F)

    Post-procedure1

    • None

    Result: 

    REPLACE ENGINE OIL TEMPERATURE SENSOR (TEMPERATURE SENSOR). Refer to  REMOVAL [12/2021 - ] 

    Result: 

    See step  2

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

    Pre-procedure1

    • Disconnect the engine oil temperature sensor connector.
    • Disconnect the ECM connector.
    • Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C7-2 (TOUT) - C37-74 (THEO) Always Below 1 Ω
      C7-1 (GND) - C37-114 (ETHE) Always Below 1 Ω
      C7-2 (TOUT) or C37-74 (THEO) - Other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Post-procedure1

    • None

    Result: 

    OK 

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

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR