ELECTRONIC CONTROLLED AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P0711

DTC Code DTC Name
P0711 Transmission Fluid Temperature Sensor "A" Performance

DESCRIPTION

The Automatic Transmission Fluid (ATF) temperature sensor converts the ATF temperature into a resistance value which is input into the Transmission Control Module (TCM).

The TCM applies a voltage to the temperature sensor through TCM terminal THOC.

The sensor resistance changes with the ATF temperature.

One terminal of the sensor is grounded so that the sensor resistance and voltage decrease as the temperature becomes higher.

The TCM calculates the ATF based on the voltage signal.

DTC Code DTC Detection Condition Trouble Area
P0711 12 seconds after the engine is started, the engine coolant temperature is below 35°C (95°F), and the ATF temperature is 120°C (248°F) or higher. (2 trip detection logic) ATF temperature sensor

MONITOR DESCRIPTION

This DTC indicates that there is a problem with the signal from the Automatic Transmission Fluid (ATF) temperature 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 TCM determines the ATF temperature and detects an open or short in the ATF temperature circuit or a fault in the ATF temperature sensor.

After running the vehicle for a certain period, the ATF temperature should increase. If the ATF temperature is 120°C (248°F) or higher after running the vehicle for a certain period, the TCM interprets this as a fault, and turns on the MIL.

INSPECTION PROCEDURE


  1. DATA LIST

    Tech Tips

    Using the intelligent tester 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 or not.


    1. Warm up the engine.

    2. Turn the ignition switch off.

    3. Connect the intelligent tester to the DLC3.

    4. Turn the ignition switch to ON.

    5. Turn the intelligent tester on.

    6. Enter the following menus: Powertrain / ECT / Data List.

    7. According to the display on the tester, read the Data List.

      ECT
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      A/T Oil Temperature 3

      ATF temperature sensor value/

      Min.: -40°C (-40°F)

      Max.: 215°C (419°F)

      • After stall test:

        Approximately 80°C (176°F)

      • Equal to ambient temperature when engine is cold

      		 If value is -40°C (-40°F) or 215°C (419°F), ATF temperature sensor circuit is opened or short circuited

      Tech Tips

      When DTC P0712 is stored and the intelligent tester output is 150°C (302°F) or higher, there is a short circuit.

      When DTC P0713 is stored and the intelligent tester output is -40°C (-40°F), there is an open circuit.

      Check the temperature displayed on the tester in order to check if a malfunction exists.

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

      If a circuit related to the ATF temperature sensor becomes open, P0713 is immediately stored (in 0.5 seconds). When P0713 is stored, P0711 cannot be stored. It is not necessary to inspect the circuit when P0711 is stored.

PROCEDURE


  1. CHECK DTC OUTPUT (IN ADDITION TO DTC P0711)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Enter the following menus: Powertrain / ECT / DTC.

    5. Read the DTCs using the tester.

      Result
      Result Proceed to
      Only P0711 is output A
      P0711 and other DTCs are output B

      Tech Tips

      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


    1. Check the transmission fluid level.

      OK
      Automatic transmission fluid level is correct.

    NG

    ADD FLUID

    OK

    REPAIR OR REPLACE ATF TEMPERATURE SENSOR