CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P2757

DTC Code DTC Name
P2757 Torque Converter Clutch Pressure Control Solenoid Performance (Shift Solenoid Valve SLU)

DESCRIPTION

The ECM uses the shift solenoid valve SLU to perform lock-up control in response to the driving conditions.

Tech Tips

The shift solenoid valve SLU controls the lock-up clutch pressure in response to the input torque.

A01VJ08E01
DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P2757

  1. Shift lever in D, and driving at speed of 8 km/h (5.0 mph) or more

  2. The lock-up signal is on, but the lock-up is off

  3. -

  4. 2 trip detection logic

  • Torque converter assembly

  • Continuously variable transaxle assembly

    (Shift solenoid valve SLU)

  1. Shift lever in D, and driving at speed of 8 km/h (5.0 mph) or more

  2. The lock-up signal is off, but the lock-up is on

  3. -

  4. 2 trip detection logic

MONITOR DESCRIPTION

When performing lock-up control (on/off) of the torque converter, the ECM compares the rotating speeds of the turbine (NT) and engine (NE) to detect mechanical malfunctions in the shift solenoid valve SLU. When the rotating speeds are different, the ECM detects the problem, illuminates the MIL and stores the DTC.

PROCEDURE


  1. CHECK DTC OUTPUT (IN ADDITION TO DTC P2757)


    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 tester.

      Result
      Result Proceed to
      Only P2757 is output A
      P2757 and other DTCs are output B

      Tech Tips

      If any other DTCs besides P2757 is output, perform troubleshooting for those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. CLEAR DTC


    1. Clear the DTC Click here.


    NEXT

  3. PERFORM DRIVE TEST

    CAUTION:

    Strictly observe posted speed limits, traffic laws and road conditions when performing the road test.

    Note


    • This test must be conducted after checking and confirming that the engine is operating normally.

    • Perform this test while the CVT fluid temperature is between 50 and 100°C (122 and 212°F).

    • Perform the test with the A/C off.

    Tech Tips


    • Lock-up control will not operate when the CVT fluid temperature is 40°C (104°F) or less and the vehicle speed is 60 km/h (37 mph) or less, or when the CVT fluid temperature is 5°C (41°F) or less.

    • Lock-up control will not operate when the engine coolant temperature is 40°C (104°F) or less.

    • The lock-up off vehicle speed may vary depending on the electrical load, and air conditioning and brake operations.


    1. Connect the intelligent tester to the DLC3.

    2. Start the engine.

    3. Turn on the tester.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / SPD (NT), Lock Up and Engine Speed.

    5. Check the Data List while driving.

      Result
      Result Proceed to
      When the lock-up condition is ON, the turbine revolution speed is lower than the engine revolution speed. A
      When the lock-up condition is OFF, the turbine revolution speed is equal to the engine revolution speed.
      When the lock-up condition is ON, the turbine revolution speed is equal to the engine revolution speed. B
      When the lock-up condition is OFF, the turbine revolution speed is lower than the engine revolution speed.

    B

    CHECK INTERMITTENT PROBLEMS Click here

    A

  4. REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY AND TORQUE CONVERTER ASSEMBLY


    1. Replace continuously variable transaxle assembly and torque converter assembly Click here.


    NEXT

  5. PERFORM INITIALIZATION


    1. Perform the initialization Click here.

    2. Check for DTCs again Click here.


    NEXT

    END