Dtc P0711 Transmission Fluid Temperature Sensor A Performance

Transmission. Lexus Gs430, Gs300. Uzs190 Grs190
A761E Automatic Transmission. Lexus Gs430, Gs300. Uzs190 Grs190

DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0711)

CHECK TRANSMISSION FLUID LEVEL

DTC P0711 Transmission Fluid Temperature Sensor "A" Performance


DESCRIPTION

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DTC No.
DTC Detection Condition
Trouble Area
P0711
  1. Both (a) and (b) are detected: (2-trip detection logic)
    1. Intake air and engine coolant temps. are more than -20°C (-4°F) at engine start
    2. After normal driving for over 18 min. and 9 km (6 mile) or more, ATF temp. is less than 10°C (50°F)
  1. Transmission wire (ATF temperature sensor)

MONITOR DESCRIPTION

This DTC indicates that there is a problem with output from the automatic transmission fluid (ATF) temperature sensor (TFT sensor) and that the sensor itself is defective. The ATF temperature sensor converts the ATF temperature to an electrical resistance value. Based on the resistance, the ECM determines the ATF temperature and detects an opens or shorts in the ATF temperature circuit or a fault of the ATF temperature sensor.
After running the vehicle for a certain period, the ATF temperature should increase. If the ATF temperature is below 10°C (50°F) after running the vehicle for a certain period, the ECM interprets this as a fault, and turns on the MIL.

WIRING DIAGRAM

Click here.

INSPECTION PROCEDURE


DATA LIST
HINT:
Using the intelligent tester Data List allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the Data List early in troubleshooting is one way to shorten labor time.
NOTICE:
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 or not.

  1. Warm up the engine.

  2. Turn the engine switch off.

  3. Connect the intelligent tester to the DLC3.

  4. Turn the engine switch on (IG) position.

  5. Turn on the tester.

  6. Select the item "Enter / Power train / ECT / Data List".

  7. Follow the instructions on the tester and read the Data List.

    Item
    		Measurement Item/
    Range (display)
    		Normal Condition
    A/T Oil Temperature 1
    		ATF Temp. Sensor Value/
    min.: -40°C (-40°F)
    max.: 215°C (419°F)
    1. After Stall Test;
      Approx. 80°C (176°F)
    2. Equal to ambient temperature when cold soak

    HINT:
    When DTC P0712 is output and intelligent tester output is 150°C (302°F) or more, there is a short circuit.
    When DTC P0713 is output and intelligent tester output is -40°C (-40°F), there is an open circuit.
    Measure the resistance between terminal OIL (OT) and body ground.

    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 second). 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 the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG) position.

  1. Turn on the tester.

  1. Select the item "Power train / ECT / DTC / Current or Pending".

  1. Read the DTCs using the intelligent tester.

    Result:

    Display (DTC output)
    		Proceed to
    Only "P0711" is output
    		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


2.CHECK TRANSMISSION FLUID LEVEL
OK:
Automatic transmission fluid level is correct.


NG
ADD FLUID
OK

REPLACE TRANSMISSION WIRE