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Home >> Lexus >> 2017 >> RC 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 6 (Automatic Transmission System (2GR-FKS,Aa81E) - Diagnostic Codes (1 Of 4)) >> AUTOMATIC TRANSMISSION SYSTEM (for 2GR-FKS) >> DTC P0710-11: Transmission Fluid Temperature Sensor "A" Circuit Short To Ground [11/2017 - ] >> Procedure

DTC P0710-11: Transmission Fluid Temperature Sensor "A" Circuit Short To Ground [11/2017 - ]: Procedure

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  1. READ VALUE USING TECHSTREAM (A/T OIL TEMPERATURE NO. 1) 
    1. Warm up the engine.
    2. Turn the engine switch off.
    3. Connect the Techstream to the DLC3.
    4. Turn the engine switch on (IG).
    5. Turn the Techstream on.
    6. Enter the following menus: Powertrain / Transmission / Data List.
    7. Read the Data List according to the display on the Techstream.

      Powertrain > Transmission > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      A/T Oil Temperature No. 1 ATF temperature sensor value Min.: -40°C (-40°F)
      Max.: 150°C (302°F)
      • Approximately 80°C (176°F): After stall speed test
      • Equal to ambient temperature: While engine is cold
      		 If value is -40°C (-40°F) or 150°C (302°F), ATF temperature sensor circuit is open or shorted

      Powertrain > Transmission > Data List 

      Tester Display
      A/T Oil Temperature No. 1

      Result

      Result Proceed to
      Data List value is normal A
      Data List value is not normal B

    Result: 

    A 

    See step  3

    Result: 

    B 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (ATF TEMPERATURE SENSOR - ECM) 
    1. Disconnect the F87 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      F87-86 (THO1) - F87-133 (ETHW) Always 79 Ω to 156 kΩ
      F87-86 (THO1) - Body ground and other terminals Always 10 kΩ or higher
      F87-133 (ETHW) - Body ground and other terminals Always 10 kΩ or higher

      HINT: 

      If the resistance is out of the specified range with the ATF temperature shown in the table below, the driveability of the vehicle may decrease.

      ATF Temperature Specified Condition
      10°C (50°F) 5 to 8 kΩ
      25°C (77°F) 2.5 to 4.5 kΩ
      110°C (230°F) 0.22 to 0.28 kΩ

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  4

    Result: 

    OK 

    See step  3

  3. REPLACE ECM 
    1. Replace the ECM.

      Refer to COMPONENTS [11/2017 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    PERFORM A/T CODE REGISTRATION. Refer to  REGISTRATION [11/2017 - ] 

  4. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) 
    1. Disconnect the F61 transmission wire connector.
    2. Disconnect the F87 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      F61-8 (OIL) or F87-86 (THO1) - Body ground and other terminals Always 10 kΩ or higher
      F61-9 (E2) or F87-133 (ETHW) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ATF TEMPERATURE SENSOR (TRANSMISSION WIRE). Refer to  COMPONENTS [09/2014 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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