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Home › Lexus › 2008 › ES 350 › Repair and Diagnosis › Transmission › Automatic Trans › Automatic Transaxle › Automatic Transaxle System › DTC P0711 Transmission Fluid Temperature Sensor "A" Performance › Inspection Procedure

Inspection Procedure

  1. DATA LIST 

    HINT:

    Using Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

    NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty.
    1. Warm up the engine.
    2. Turn the engine switch off.
    3. Connect Techstream to the DLC3.
    4. Turn the engine switch on (IG).
    5. Turn on the tester.
    6. Enter the following items: "Powertrain / ECT / Data List".
    7. According to the display on the tester, read "Data List".
      TESTER DISPLAY REFERENCE

      Tester Display Measurement Item / Range Normal Condition Diagnostic Note
      A/T Oil Temperature 1 ATF temp, sensor value/
      min.. -40°C (-40°F)
      max.: 215°C (419°F)
      • After stall test; Approx. 80°C (176°F)
      • Equal to ambient temperature when cold soak
      		 If the value is "-40°C (-40°F)" or "215°C (419°F)\ ATF temp, sensor circuit is open or shorted.

      HINT:

      When DTC P0712 is output and Techstream indicates 150°C (302°F) or more, there is a short circuit.

      When DTC P0713 is output and Techstream indicates -40°C (-40°F), there is an open circuit. Measure the resistance between terminal THO1 (OT) and body ground.

      TEMPERATURE SPECIFICATION

      Temperature Displayed Malfunction
      -40°C (-40°F) Open circuit
      150°C (302°F) or more Short circuit

      HINT:

      If a circuit related to the ATF temperature sensor becomes open, P0713 is immediately set (in 0.5 seconds). When P0713 is set, P0711 cannot be detected.

      It is not necessary to inspect the circuit when P0711 is set.

  1. CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0711) 
    1. Connect Techstream to the DLC3.
    2. Turn the engine switch on (IG) and turn the Techstream on.
    3. Select the items: "Powertrain / ECT / Trouble Codes".
    4. Read the DTCs using Techstream.

      Result 

      RESULT REFERENCE

      Result Proceed to
      P0711 A
      P0711 and other DTCs B

      HINT:

      If any other codes besides "P0711" are output, perform troubleshooting for those DTCs first.

    B:  GO TO DTC CHART 

    A: Go to Next Step 

  2. CHECK TRANSMISSION FLUID LEVEL 
    1. Check the transmission fluid level.

      OK: 

      Automatic transmission fluid level is correct. 

    NG: ADD FLUID 

    OK: Go to Next Step 

  3. INSPECT TRANSMISSION WIRE (ATF TEMPERATURE SENSOR) 
    1. Remove the TCM from the transaxle.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      17 (E2) - 18 (THO1) Always 79 Ω to 156 kΩ
      17 (E2) - Body ground Always 10 kΩ or higher
      18 (THO1) - Body ground Always 10 kΩ or higher
      Fig 1: Identifying ATF Temperature Sensor Connector Terminals
      G05836080Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      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.

      TEMPERATURE SPECIFICATION

      Tester Connection ATF Temperature Specified Condition
      17 (E2) - 18 (7HO1) 10°C (50°F) 5 to 8 kΩ
      17 (E2) - 18 (7HO1) 25°C (77°F) 2 5 to 4.5 kΩ
      17 (E2) - 18 (7HO1) 110°C (230°F) 0.22 to 0.28 kΩ

    OK: REPLACE TCM 

    NG: Go to Next Step 

  4. CHECK ATF TEMPERATURE SENSOR 
    1. Disconnect the ATF temperature sensor connector from the transmission wire.
    2. Measure the resistance according to the value (s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATION

      Tester Connection Condition Specified Condition
      E2-THO1 Always 79 Ω to 156 kΩ
      E2 - Body ground Always 10 kΩ or higher
      THO1 - Body ground Always 10 kΩ or higher
      Fig 2: Identifying ATF Temperature Sensor Connector Terminals
      G05836081Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      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.

      TEMPERATURE SPECIFICATION

      Tester Connection ATF Temperature Specified Condition
      17 (E2) - 18 (7HO1) 10°C (50°F) 5 to 8 kΩ
      17 (E2) - 18 (7HO1) 25°C (77°F) 2 5 to 4.5 kΩ
      17 (E2) - 18 (7HO1) 110°C (230°F) 0.22 to 0.28 kΩ

    NG: REPLACE ATF TEMPERATURE SENSOR ASSEMBLY 

    OK: REPLACE TRANSMISSION WIRE 

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