DTC    P2763    Torque Converter Clutch Pressure Control Solenoid Control Circuit High (Shift Solenoid Valve DSU)

DTC    P2764    Torque Converter Clutch Pressure Control Solenoid Control Circuit Low (Shift Solenoid Valve DSU)

for Preparation Click here


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
  1. Open in lock-up engagement solenoid DSU circuit
  2. Continuously variable transaxle assembly
  3. 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
  1. Short in lock-up engagement solenoid DSU circuit
  2. Continuously variable transaxle assembly
  3. 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


C195850E01


INSPECTION PROCEDURE

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


    C193934E03

  1. Disconnect the transmission wire connector from the transaxle.

  1. 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

    Text in Illustration 
    *1
    		Component without wire harness connected:
    Continuously Variable Transaxle Assembly
    (Transmission wire))



NG
Go to step 5
OK


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


    C193939E02

  1. Connect the transmission wire connector to the transaxle.

  1. Disconnect the ECM connector.

  1. 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

    Text in Illustration 
    *1
    		Front view of wire harness connector:
    (to ECM)



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.REPLACE ECM

  1. Replace the ECM (Click here).


NEXT


4.PERFORM INITIALIZATION

NOTICE:
  1. 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
    1. Continuously variable transaxle assembly
    2. ECM
    3. Oil pressure sensor
    4. Yaw rate and acceleration sensor
  2. After reset memory, always perform yaw rate and acceleration sensor (deceleration sensor 0 point) calibration first, and then the CVT oil pressure calibration.
  3. Always perform the 0 point calibration with the vehicle on level ground.
  4. 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).

  1. 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

NOTICE:
  1. 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
    1. Continuously variable transaxle assembly
    2. ECM
    3. Oil pressure sensor
    4. Yaw rate and acceleration sensor
  2. After reset memory, always perform yaw rate and acceleration sensor (deceleration sensor 0 point) calibration first, and then the CVT oil pressure calibration.
  3. Always perform the 0 point calibration with the vehicle on level ground.
  4. 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).

  1. Check for DTCs again (Click here).


NEXT

END