CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P2763 and 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 sent to shift solenoid valve DSU and performs lock-up clutch pressure control in response to the input torque value.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P2763

Torque Converter Clutch Pressure Control Solenoid Control Circuit High (Shift Solenoid Valve DSU)

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other

  1. The vehicle is being driven.

  2. There is an open circuit in the shift solenoid valve DSU circuit.

  3. Detected 20 times or more consecutively

  4. 1 trip detection logic

  • Open in shift solenoid valve DSU circuit

  • Continuously variable transaxle assembly

  • ECM

Comes on

DTC stored

P2764

Torque Converter Clutch Pressure Control Solenoid Control Circuit Low (Shift Solenoid Valve DSU)

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other

  1. The vehicle is being driven.

  2. There is a short circuit in the shift solenoid valve DSU circuit.

  3. Detected 20 times or more consecutively

  4. 1 trip detection logic

  • Short in shift solenoid valve DSU circuit

  • Continuously variable transaxle assembly

  • ECM

Comes on

DTC stored

MONITOR DESCRIPTION

These DTCs indicate an open or short circuit in the shift solenoid valve DSU circuit. The ECM controls lock-up by turning shift solenoid valve DSU on/off. When there is an open or short circuit in the shift solenoid valve DSU circuit, the ECM detects the problem, illuminates the MIL and stores the DTC.

WIRING DIAGRAM

C251558E09

CAUTION / NOTICE / HINT

Note:

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

    Click here

  • Check that no DTCs are stored after performing initialization.

    Click here

PROCEDURE

  1. INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE DSU)

    1. C199169C07

      *a

      Component without harness connected

      (Transmission Wire)

      Disconnect the transmission wire connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      7 (DSU) - Body ground

      20°C (68°F)

      11 to 13 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLYClick here

    OK

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

    1. C267934C15

      *a

      Front view of wire harness connector

      (to ECM)

      Disconnect the ECM connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B75-71 (DSU) - Body ground

      20°C (68°F)

      11 to 15 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. REPLACE ECM

    1. Replace the ECM.

    Result

    Proceed to

    NEXT
    NEXT

    PERFORM INITIALIZATION

    Click here

  4. REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

    1. Replace the continuously variable transaxle assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    PERFORM INITIALIZATION

    Click here