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Home >> Lexus >> 2022 >> LS 500h RWD >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (W/ Advanced Park) - Diagnostic Codes (5 Of 5) & Circuit Tests (1 Of 2) >> HYBRID CONTROL SYSTEM (w/ Advanced Park) >> DTC P3175-15: Oil Pump Motor Temperature Sensor Circuit Short to Auxiliary Battery or Open [11/2021 - 10/2023] >> Procedure

DTC P3175-15: Oil Pump Motor Temperature Sensor Circuit Short to Auxiliary Battery or Open [11/2021 - 10/2023]: Procedure

  1. CLEAR DTC 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Read and record the DTCs and freeze frame data.

      Powertrain > Hybrid Control > Trouble Codes 

    5. Clear the DTCs and freeze frame data.

      Powertrain > Hybrid Control > Clear DTCs 

    6. Turn the power switch off.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. READ VALUE USING TECHSTREAM (OPM TEMPERATURE)) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Data List / OPM Temperature.
    4. Read the Data List.

      Result

      Result Proceed to
      -40°C (-40°F) (open or short to +B) A
      Approximately equal to the actual temperature B
    5. Turn the power switch off.

    Result: 

    B 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [11/2021 - 10/2023] 

    Result: 

    A 

    See step  3

  3. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the A106 hybrid vehicle control ECU assembly connector.
      GTY1086395Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Hybrid Vehicle Control ECU Assembly)
    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
      A106-46 (TOPM) - A106-45 (ETOP) or Body ground Power switch on (IG) Below 1 V
      NOTE:

      Turning the power switch on (IG) with the hybrid vehicle control ECU assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    4. Turn the power switch off.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A106-46 (TOPM) - A106-45 (ETOP) 20°C (68°F) 11.94 to 12.22 kΩ
      A106-46 (TOPM) - A106-45 (ETOP) 40°C (104°F) 5.75 to 5.92 kΩ
      A106-46 (TOPM) - A106-45 (ETOP) 80°C (176°F) 1.63 to 1.71 kΩ
    6. Reconnect the A106 hybrid vehicle control ECU assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [11/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023] 

    Result: 

    NG 

    See step  4

  4. CHECK OIL WITH MOTOR PUMP ASSEMBLY (OIL PUMP MOTOR TEMPERATURE SENSOR) 
    1. Disconnect the D41 oil pump motor temperature sensor connector.
      GTY1086675Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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
      D41-1 (OMT) - D41-2 (OMTG) Power switch on (IG) Below 1 V
      D41-2 (OMTG) - Body ground Power switch on (IG) Below 1 V
      NOTE:

      Turning the power switch on (IG) with the oil pump motor temperature sensor connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

      GTY818898Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Oil Pump Motor Temperature Sensor
    4. Turn the power switch off.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D41-1 (OMT) - D41-2 (OMTG) 20°C (68°F) 11.94 to 12.22 kΩ
      D41-1 (OMT) - D41-2 (OMTG) 40°C (104°F) 5.75 to 5.92 kΩ
      D41-1 (OMT) - D41-2 (OMTG) 80°C (176°F) 1.63 to 1.71 kΩ
    6. Reconnect the D41 oil pump motor temperature sensor connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    NG 

    REPLACE OIL WITH MOTOR PUMP ASSEMBLY. Refer to  REMOVAL [11/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023] 

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