AUTOMATIC TRANSAXLE 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 fluid temperature into a resistance value for use by the ECM.

A01EUERE22

The ECM applies a voltage to the temperature sensor through terminal THO1 of the ECM.

The sensor resistance changes with the transmission fluid 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 ECM calculates the fluid temperature based on the voltage signal.

DTC No. DTC Detection Condition Trouble Area
P0711

One of the following conditions (A) or (B) is met:

(A) Both (a) and (b) are detected: (2-trip detection logic)


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


  • (b) After normal driving for over 18 min. and 20 sec. and 8 km (5 mile) or more, ATF temperature is less than 20°C (68°F)

(B) Both (a) and (b) are detected: (2-trip detection logic)


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


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

 ATF temperature sensor

MONITOR DESCRIPTION

This DTC indicates that there is a problem with output signals from the automatic transmission fluid (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 ECM 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 ECM interprets this as a fault turns on the MIL, and stores the DTC.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0712 Click here.

INSPECTION PROCEDURE

Note


  • If DTCs P0711 and P2610 are output simultaneously, confirm that the ATF temperature is as specified in "Normal Condition" using the intelligent tester first. When the ATF temperature is as specified in "Normal Condition", perform troubleshooting for DTC P2610 Click here.

  • In the table below, the value listed under "Normal Condition" are reference values.

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.


  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 / Engine and ECT / Data List.

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

    ECM
    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 speed test: Approximately 80°C (176°F)

    • Equal to ambient temperature when cold soak

    		 If value is -40°C (-40°F) or 150°C (302°F), ATF temperature sensor circuit is open or short circuited

    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.

    Measure the resistance between terminal THO1 (OIL) and body ground.

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

    Tech Tips

    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.

PROCEDURE


  1. CHECK OTHER DTCS 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 / Engine and ECT / DTC.

    5. Read the DTCs using the intelligent tester.

      Result
      Display (DTC Output) Proceed to
      Only P0711 is output A
      P0711 and other DTC 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 TRANSMISSION FLUID LEVEL


    1. Check the transmission fluid level Click here.

      OK
      Automatic transmission fluid level is correct.

    NG

    ADJUST FLUID LEVEL

    OK

    REPLACE TRANSMISSION WIRE (ATF TEMPERATURE SENSOR) Click here