CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P0711

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

DESCRIPTION

The CVT fluid temperature sensor converts the fluid temperature into a resistance value which is detected by the ECM.

The sensor resistance changes with the CVT fluid temperature. As the temperature rises, the sensor resistance decreases. The ECM applies a voltage to the temperature sensor through ECM terminal THO1 and calculates the fluid temperature based on the voltage signal.

Tech Tips

The CVT fluid temperature is likely to increase under conditions such as towing, climbing hills and in traffic.

DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P0711

  1. The intake air and engine coolant temperatures are more than -10°C (14°F) at engine start, and the vehicle is driven for over 18 minutes and 7 km (4.3 miles) or more.

  2. CVT fluid temperature is less than 20°C (68°F).

  3. 3 seconds

  4. 2 trip detection logic

  • CVT fluid level

  • Continuously variable transaxle assembly

    (CVT fluid temperature sensor)

  1. The engine coolant temperature is less than 35°C (95°F) at engine start (Engine is not in an automatically stopped state).

  2. The CVT fluid temperature is 100°C (212°F) or more.

  3. 10 seconds

  4. 2 trip detection logic

MONITOR DESCRIPTION

The CVT fluid temperature sensor converts the CVT fluid temperature to an electrical resistance value. Based on the resistance, the ECM determines the CVT fluid temperature and detects open or short circuits in the CVT fluid temperature circuit.

After driving the vehicle for a certain period, the CVT fluid temperature should increase. When the CVT fluid temperature is below 20°C (68°F), the ECM interprets this as a fault and turns on the MIL.

When the engine coolant temperature reaches 35°C (95°F) after a cold engine start, if the CVT fluid temperature is 100°C (212°F) or more, the ECM also determines this as a fault, turns on the MIL, and stores the DTC.

PROCEDURE


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


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    5. Read the DTCs using the GTS.

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

      Tech Tips

      If any other DTCs 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 CVT fluid level Click here.

      OK
      CVT fluid level is correct.

    NG

    ADD FLUID Click here

    OK

  3. REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY


    1. Replace the continuously variable transaxle assembly Click here.


    NEXT

  4. PERFORM INITIALIZATION

    Note


    • Performing reset memory/initialization will clear the learned value of the deceleration sensor (deceleration sensor zero point calibration) and the CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, deceleration sensor zero point calibration, and CVT oil pressure calibration when replacing any of the parts shown in the following table:

      Replaced Part

      • Continuously variable transaxle assembly

      • ECM

      • Brake actuator assembly (Skid control ECU)

      • Oil pressure sensor

      • Deceleration sensor

    • After reset memory, always perform deceleration sensor (deceleration sensor zero point) calibration first, and then the CVT oil pressure calibration.

    • Always perform the zero point calibration with the vehicle on level ground.

    • Do not shake or vibrate the vehicle during the zero point calibration.


    1. Using the GTS, perform the reset memory, deceleration sensor zero point calibration and CVT oil pressure calibration Click here.

    2. Check for DTCs again Click here.


    NEXT

    END