CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P2763, P2764

DTC Code DTC Name
P2763 Torque Converter Clutch Pressure Control Solenoid Control Circuit High (Shift Solenoid Valve DSU)
P2764 Torque Converter Clutch Pressure Control Solenoid Control Circuit Low (Shift Solenoid Valve DSU)

DESCRIPTION

The ECM controls the signal to the lock-up engagement solenoid DSU and performs lock-up clutch pressure control in response to the input torque value.

DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P2763

  1. During driving

  2. Open in lock-up engagement solenoid DSU circuit

  3. Detected 20 times or more consecutively

  4. 1-trip detection logic

  • Open in lock-up engagement solenoid DSU circuit

  • Continuously variable transaxle assembly

  • ECM
P2764

  1. During driving

  2. Short in lock-up engagement solenoid DSU circuit

  3. Detected 20 times or more consecutively

  4. 1-trip detection logic

  • Short in lock-up engagement solenoid DSU circuit

  • Continuously variable transaxle assembly

  • ECM

MONITOR DESCRIPTION

This DTC indicates an open or short in the lock-up engagement solenoid DSU circuit. The ECM controls the gearshift by turning the lock-up engagement solenoid DSU (on/off). When there is an open or short circuit in engagement solenoid valve circuit, the ECM detects the problem, illuminates the MIL and stores the DTC.

WIRING DIAGRAM

A011998E01

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY (LOCK-UP ENGAGEMENT SOLENOID DSU)


    1. A011BRAE03
      Text in Illustration
      *1

      Component without wire harness connected:

      Continuously Variable Transaxle Assembly

      (Transmission wire))

      Disconnect the transmission wire connector from the transaxle.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      5 (DSU) - Body ground 20°C (68°F) 11 to 15 Ω

    NG

    REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)


    1. A01185NE02
      Text in Illustration
      *1

      Front view of wire harness connector:

      (to ECM)

      Connect the transmission wire connector to the transaxle.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      B8-59 (DSU) - B8-105 (E1) 20°C (68°F) 11 to 15 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  4. PERFORM INITIALIZATION

    Note


    • Performing reset memory/initialization will clear the learned values of both the yaw rate and acceleration sensor (deceleration sensor 0 point calibration) and the CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, yaw rate and acceleration sensor 0 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

      • Yaw rate and acceleration sensor

    • After reset memory, always perform yaw rate and acceleration sensor (deceleration sensor 0 point) calibration first, and then the CVT oil pressure calibration.

    • Always perform the 0 point calibration with the vehicle on level ground.

    • Do not shake or vibrate the vehicle during the 0 point calibration.


    1. Using the intelligent tester, perform the reset memory, deceleration sensor 0 point calibration and CVT oil pressure calibration Click here.

    2. Check for DTCs again Click here.


    NEXT

    END

  5. REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY


    1. Replace the continuously variable transaxle assembly Click here.


    NEXT

  6. PERFORM INITIALIZATION

    Note


    • Performing reset memory/initialization will clear the learned values of both the yaw rate and acceleration sensor (deceleration sensor 0 point calibration) and the CVT oil pressure (CVT oil pressure calibration). Make sure to perform reset memory, yaw rate and acceleration sensor 0 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

      • Yaw rate and acceleration sensor

    • After reset memory, always perform yaw rate and acceleration sensor (deceleration sensor 0 point) calibration first, and then the CVT oil pressure calibration.

    • Always perform the 0 point calibration with the vehicle on level ground.

    • Do not shake or vibrate the vehicle during the 0 point calibration.


    1. Using the intelligent tester, perform the reset memory, deceleration sensor 0 point calibration and CVT oil pressure calibration Click here.

    2. Check for DTCs again Click here.


    NEXT

    END