CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P0746, P0776, P2714, P2829

DTC Code DTC Name
P0746 Pressure Control Solenoid "A" Performance (Shift Solenoid Valve DS1)
P0776 Pressure Control Solenoid "B" Performance (Shift Solenoid Valve DS2)
P2714 Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT)
P2829 Pressure Control Solenoid "K" Performance (Shift Solenoid Valve SLS)

DESCRIPTION

The ECM uses each solenoid to perform gear ratio changes, and control the line pressure. Shift solenoid valves DS1 and DS2 control gear ratio changes. Shift solenoid valve SLS controls belt clamping pressure. Shift solenoid valve SLT controls the line pressure.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0746 Pressure Control Solenoid "A" Performance (Shift Solenoid Valve DS1)

  1. Diagnosis Condition


    • The vehicle is accelerating.

  2. Malfunction Status


    • Up-shift is not possible. The actual gear ratio is higher than the target.

  3. Malfunction Time


    • 2 seconds

  4. Other


    • 2-trip detection logic


  1. Diagnosis Condition


    • The vehicle is decelerating or stopped.

  2. Malfunction Status


    • Down-shift is not possible. The actual gear ratio is lower than the target.

  3. Malfunction Time


    • 1 second

  4. Other


    • 2-trip detection logic

 Continuously variable transaxle assembly Comes on DTC stored
P0776 Pressure Control Solenoid "B" Performance (Shift Solenoid Valve DS2)

  1. Diagnosis Condition


    • The vehicle is accelerating.

  2. Malfunction Status


    • Up-shift is not possible. The actual gear ratio is higher than the target.

  3. Malfunction Time


    • 2 seconds

  4. Other


    • 2-trip detection logic


  1. Diagnosis Condition


    • The vehicle is decelerating or stopped.

  2. Malfunction Status


    • Down-shift is not possible. The actual gear ratio is lower than the target.

  3. Malfunction Time


    • 1 second

  4. Other


    • 2-trip detection logic

 Continuously variable transaxle assembly Comes on DTC stored
P2714 Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT)

  1. Diagnosis Condition


    • The vehicle is accelerating.

  2. Malfunction Status


    • Up-shift is not possible. The actual gear ratio is higher than the target.

  3. Malfunction Time


    • 2 seconds

  4. Other


    • 2-trip detection logic


  1. Diagnosis Condition


    • The vehicle speed is constant at a speed of 65 km/h (40 mph) or more and the target gear ratio is the lowest possible gear ratio.

  2. Malfunction Status


    • The actual gear ratio is higher than the target.

  3. Malfunction Time


    • 1 second

  4. Other


    • 2-trip detection logic


  1. Diagnosis Condition


    • The vehicle is accelerating from a stop (before the vehicle speed exceeds 8 km/h (5 mph))

  2. Malfunction Status


    • The gear ratio is higher than the threshold.

  3. Malfunction Time


    • 0.2 seconds

  4. Other


    • 2-trip detection logic

 Continuously variable transaxle assembly Comes on DTC stored
P2829 Pressure Control Solenoid "K" Performance (Shift Solenoid Valve SLS)

  1. Diagnosis Condition


    • The vehicle speed is constant at a speed of 65 km/h (40 mph) or more and the target gear ratio is the highest possible gear ratio.

  2. Malfunction Status


    • The actual gear ratio is higher than the target.

  3. Malfunction Time


    • 1 second

  4. Other


    • 2-trip detection logic


  1. Diagnosis Condition


    • Shift lever in D and vehicle being driven at a speed of 8 km/h (5 mph) or less

  2. Malfunction Status


    • The ratio of the rotation speeds of the primary pulley (NIN) and secondary pulley (NOUT) are excessive.

  3. Malfunction Time


    • 0.2 seconds

  4. Other


    • 2-trip detection logic

 Continuously variable transaxle assembly Comes on DTC stored

MONITOR DESCRIPTION

The ECM compares the actual gear ratio with the target gear ratio. When the actual gear ratio and target gear ratio are different, the ECM detects the problem, illuminates the MIL and stores a DTC.

PROCEDURE


  1. CHECK DTC OUTPUT (IN ADDITION TO DTC P0746, P0776, P2714 AND P2829)


    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.


      Powertrain > Engine and ECT > Trouble Codes

    5. Read the DTCs using the GTS.

      Tech Tips

      If any DTCs other than P0746, P0776, P2714 or P2829 are output, perform troubleshooting for those DTCs first.

      Result
      Result Proceed to
      Only DTC P0746, P0776, P2714 and/or P2829 are output A
      DTC P0746, P0776, P2714 and/or P2829 and other DTCs are output B

    B

    GO TO DTC CHART Click here

    A

  2. REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY


    1. Replace the continuously variable transaxle assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  3. PERFORM INITIALIZATION

    Note


    • Performing Reset Memory will clear the learned value of the yaw rate and acceleration sensor (deceleration sensor zero point calibration) and the CVT oil pressure (CVT oil pressure calibration). Make sure to perform Reset Memory, yaw rate and acceleration 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

      • Oil pressure sensor

      • Airbag sensor assembly (Yaw rate and acceleration sensor)

    • After performing Reset Memory, always perform yaw rate and acceleration sensor (deceleration sensor zero point) calibration first, and then CVT oil pressure calibration.

    • Always perform calibration with the vehicle on level ground.

    • Do not shake or vibrate the vehicle during calibration.


    1. Using the GTS, perform Reset Memory, deceleration sensor zero point calibration and CVT oil pressure calibration.

      Click here

    2. Check for DTCs again.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    END