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Home >> Lexus >> 2020 >> UX 200 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Engine Control System (SFI) (M20A-FXS) - Diagnostic Codes (2 Of 6) (Hybrid)) >> SFI System >> DTC P0195-15: Engine Oil Temperature Sensor Circuit Short to Battery or Open [10/2018 - ] >> Procedure

DTC P0195-15: Engine Oil Temperature Sensor Circuit Short to Battery or Open [10/2018 - ]: Procedure

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  1. CHECK HARNESS AND CONNECTOR 
    GTY815933Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Front view of wire harness connector
    (to Engine Oil Temperature Sensor (Engine Oil Pressure and Temperature Sensor))

    HINT: 

    Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.

    1. Disconnect the engine oil temperature sensor (engine oil pressure and temperature sensor) connector.
    2. Turn the power switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      C15-3 (VC) - C15-2 (GND) Power switch on (IG) 4.5 to 5.5 V
      C15-4 (TOUT) - C15-2 (GND) Power switch on (IG) 0.54 to 4.86 V
    4. Turn the power switch off and wait for at least 30 seconds.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C15-2 (GND) - Body ground Power switch off Below 1 Ω
      C15-3 (VC) - C15-4 (TOUT) Power switch off 171 to 189 kΩ

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ENGINE OIL TEMPERATURE SENSOR (ENGINE OIL PRESSURE AND TEMPERATURE SENSOR). Refer to  REMOVAL [10/2018 - ] 

    Result: 

    NG 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (ENGINE OIL TEMPERATURE SENSOR (ENGINE OIL PRESSURE AND TEMPERATURE SENSOR) - ECM) 
    1. Disconnect the engine oil temperature sensor (engine oil pressure and 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
      C15-2 (GND) - C34-100 (EPEO) Always Below 1 Ω
      C15-4 (TOUT) - C34-123 (THEO) Always Below 1 Ω
      C15-4 (TOUT) or C34-123 (THEO) - Other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [10/2018 - 07/2022]  Refer to  REMOVAL [07/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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