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Home >> Lexus >> 2010 >> LS 600hL >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Vehicle Control (Diagnostic Codes (P2120-152 - U0424-537) & Circuit Tests) >> Hybrid Control System >> DTC P3176-863: Transmission Oil Pump Motor Coil Temperature Sensor Circuit Low >> Procedure

DTC P3176-863: Transmission Oil Pump Motor Coil Temperature Sensor Circuit Low: Procedure

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

    NEXT: Go to next step 

  2. READ VALUE USING TECHSTREAM (OPM TEMPERATURE) 
    1. Select the following menu items: Powertrain / Hybrid Control / Data List / OPM Temperature.
    2. Read the data list.

      Result

      Tester Display Proceed to
      392°F (200°C) (short to GND) A
      Approximately equal to the actual temperature B

    B → See step   5 

    A: Go to next step 

  3. CHECK HARNESS AND CONNECTOR 
    1. Turn the power switch off.
      Fig 1: Disconnecting Connectors A74 And E55 From Hybrid Vehicle Control ECU
      GTY143550Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect connectors A74 and E55 from the hybrid vehicle control ECU.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for short)

      Tester Connection Switch Condition Specified Condition
      E55-34 (TOPM) or A74-5 (E2) - Body ground and other terminals Power switch off 10 kΩ or higher

      Standard resistance

      Tester Connection Condition Specified Condition
      E55-34 (TOPM) - A74-5 (E2) 68°F (20°C) 121 to 129.7 kΩ
      E55-34 (TOPM) - A74-5 (E2) 104°F (40°C) 50.49 to 55.01 kΩ
      E55-34 (TOPM) - A74-5 (E2) 176°F (80°C) 11.26 to 12.99 kΩ

    NG → See step   4 

    OK → See step   7 

  4. CHECK OIL WITH MOTOR PUMP ASSEMBLY (OIL PUMP MOTOR TEMPERATURE SENSOR) 
    1. Turn the power switch off.
      Fig 2: Locating Oil Pump Motor Temperature Sensor Connector
      GTY148113Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the oil pump motor temperature sensor connector.
    3. Measure the resistance according to the value(s) in the table below.
      Fig 3: Identifying E64 Oil Pump Motor Temperature Sensor Connector
      GTY138718Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance (Check for short)

      Tester Connection Switch Condition Specified Condition
      E64-1 (OMT) - Body ground Power switch off 10 kΩ or higher
    4. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      E64-1 (OMT) - E64-2 (OMTG) 68°F (20°C) 121 to 129.7 kΩ
      E64-1 (OMT) - E64-2 (OMTG) 104°F (40°C) 50.49 to 55.01 kΩ
      E64-1 (OMT) - E64-2 (OMTG) 176°F (80°C) 11.26 to 12.99 kΩ

    NG → See step   6 

    OK → REPAIR OR REPLACE HARNESS OR CONNECTOR 

  5. CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS 
  6. REPLACE OIL WITH MOTOR PUMP ASSEMBLY. Refer to  COMPONENTS 
  7. REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  COMPONENTS 
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