СИСТЕМА АВТОМАТИЧЕСКОЙ ТРАНСМИССИИ, Diagnostic DTC:P0711

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

DESCRIPTION

The ATF temperature sensor converts the fluid temperature into a resistance value for use by the TCM.

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

The sensor resistance changes with the ATF temperature. As the temperature becomes higher, the sensor resistance decreases.

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

The TCM calculates the fluid temperature based on the voltage signal.

A01ISTXE06
DTC Code DTC Detection Condition Trouble Area
P0711

Either condition is met (2-trip detection logic):


  • Both (a) and (b) are detected:


    • (a) Intake air and engine coolant temperatures are -10°C (14°F) or higher at engine start

    • (b) After normal driving for over 18 min. and 20 sec. and 7 km (4.4 mile) or more, ATF temperature is below 20°C (68°F)

  • Both (a) and (b) are detected:


    • (a) Engine coolant temperature is below 35°C (95°F) at engine start

    • (b) ATF temperature is 110°C (230°F) or higher when engine coolant temperature reaches 60°C (140°F)

 ATF temperature sensor (ATF temperature sensor assembly)

MONITOR DESCRIPTION

This DTC indicates that there is a problem with output signals from the ATF temperature sensor and that the sensor itself is defective. The ATF temperature sensor converts the ATF temperature into 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 of the ATF temperature sensor.

After running the vehicle for a certain period, the ATF temperature should increase. If the ATF temperature is below 20°C (68°F) after running the vehicle for a certain period, the TCM interprets this as a fault, turns on the MIL and stores the DTC.

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 1

      ATF temperature sensor value/

      Min.: -40°C (-40°F)

      Max.: 215°C (419°F)

      • After stall test: Approx. 80°C (176°F)

      • Equal to ambient temperature after cold soak

      		 If the value is "-40°C (-40°F)" or "150°C (302°F)", the ATF temperature sensor circuit is open or shorted.

      Tech Tips

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

      When DTC P0713 is output and the intelligent tester indicates -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 more 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 intelligent 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 Click here

    A

  2. CHECK TRANSAXLE FLUID LEVEL


    1. Check the transaxle fluid level Click here.

      OK
      Automatic transaxle fluid level is correct.

    NG

    ADJUST FLUID LEVEL Click here

    OK

    REPLACE ATF TEMPERATURE SENSOR (ATF TEMPERATURE SENSOR ASSEMBLY) Click here