CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P0746 and P0776

DTC Code DTC Name
P0746 Pressure Control Solenoid "A" Performance (Shift Solenoid Valve DS1)
P0776 Pressure Control Solenoid "B" Performance (Shift Solenoid Valve DS2)

DESCRIPTION

The ECM uses each solenoid to perform gear ratio changes and control line pressure. Shift solenoid valves DS1 and DS2 control gear ratio changes. Shift solenoid valve SLS controls belt clamping 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 2. Malfunction Status 3. Malfunction Time 4. Other

  1. The engine is warmed up, and with the shift lever in D, the vehicle is accelerating.

  2. The actual gear ratio is higher than the target.

  3. 2 seconds

  4. 2 trip detection logic

  1. The engine is warmed up, and with the shift lever in D, the vehicle is decelerating or stopped.

  2. The actual gear ratio is lower than the target.

  3. 1 second

  4. 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 2. Malfunction Status 3. Malfunction Time 4. Other

  1. The engine is warmed up, and with the shift lever in D, the vehicle is decelerating or stopped.

  2. The actual gear ratio is lower than the target.

  3. 1 second

  4. 2 trip detection logic

  1. The engine is warmed up, and with the shift lever in D, the vehicle is accelerating.

  2. The actual gear ratio is higher than the target.

  3. 2 seconds

  4. 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 the DTC.

CAUTION / NOTICE / HINT

Note:

  • Perform initialization when parts related to the continuously variable transaxle are replaced.

    Click hereClick here

  • Check that no DTCs are stored after performing initialization.

    Click here

PROCEDURE

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

    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.

      Result

      Proceed to

      Only P0746 and P0776 are output

      P0746 or P0776 and other DTCs are output
      Tip:

      If any other DTCs besides P0746 and P0776 are output, perform troubleshooting for those DTCs first.

    P0746 or P0776 and other DTCs are output

    GO TO DTC CHART

    Click hereClick hereClick here

    Only P0746 and P0776 are output

  2. REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

    1. Replace the continuously variable transaxle assembly.

      Click hereClick here

    Result

    Proceed to

    NEXT
    NEXT

    PERFORM INITIALIZATION

    Click hereClick here