CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P0962, P0963, P0966, P0967

DTC Code DTC Name
P0962 Pressure Control Solenoid "A" Control Circuit Low (Shift Solenoid Valve DS1)
P0963 Pressure Control Solenoid "A" Control Circuit High (Shift Solenoid Valve DS1)
P0966 Pressure Control Solenoid "B" Control Circuit Low (Shift Solenoid Valve DS2)
P0967 Pressure Control Solenoid "B" Control Circuit High (Shift Solenoid Valve DS2)

DESCRIPTION

Using shift solenoid DS1 (inflow to the primary pulley) and shift solenoid DS2 (outflow from the primary pulley), the ECM controls the line pressure and fluid volume input and output to the primary pulley according to the vehicle speed and accelerator pedal angle. As a fail-safe function, if a solenoid is shorted or open, the ECM stops current to the faulty solenoid.

DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P0962

  1. Driving so that gear ratio changes occur

  2. Short in shift control solenoid DS1 circuit

  3. 20 times

  4. 1-trip detection logic

  • Short in shift control solenoid DS1 circuit

  • Continuously variable transaxle assembly

  • ECM
P0963

  1. Driving so that gear ratio changes occur

  2. Open in shift control solenoid DS1 circuit

  3. 20 times

  4. 1-trip detection logic

  • Open in shift control solenoid DS1 circuit

  • Continuously variable transaxle assembly

  • ECM
P0966

  1. Driving so that gear ratio changes occur

  2. Short in shift control solenoid DS2 circuit

  3. 20 times

  4. 1-trip detection logic

  • Short in shift control solenoid DS2 circuit

  • Continuously variable transaxle assembly

  • ECM
P0967

  1. Driving so that gear ratio changes occur

  2. Open in shift control solenoid DS2 circuit

  3. 20 times

  4. 1-trip detection logic

  • Open in shift control solenoid DS2 circuit

  • Continuously variable transaxle assembly

  • ECM

MONITOR DESCRIPTION

These DTCs indicate an open or short in the shift solenoid DS1 or DS2 circuit. When there is an open or short circuit in any shift solenoid valve circuits, the ECM detects the problem, illuminates the MIL and stores the DTC.

WIRING DIAGRAM

A005LRYE01

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CONTROL THE SHIFT POSITION)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / Active Test.

    5. In accordance with the display on the tester, perform the Active Test.

      Tester Display Test Part Control Range Diagnostic Note
      Control the Shift Position

      Operates the shift control solenoid valves to allow gear ratio to be manually selected [1st - 2nd - 3rd - 4th - 5th]

      Reference gear ratios:

      1st (2.39) - 2nd (1.43) - 3rd (1.01) - 4th (0.72) - 5th (0.43)

      • Press "→" button: Shift up

      • Press "←" button: Shift down

      Used to check the operation of the shift solenoid valves.

      Note

      Performing this test at speeds other than those specified in "Vehicle Condition" will damage the transaxle.

      [Vehicle Condition]

      20 km/h (11 mph) or more and 45 km/h (24 mph) or less
      Result
      Result Proceed to
      Gear ratio does not change A
      Gear ratio changes B

    B

    REPLACE ECM Click here

    A

  2. INSPECT CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY (SHIFT CONTROL SOLENOID VALVE DS1 AND DS2)


    1. A005I6SE03
      Text in Illustration
      *a

      Component without harness connected:

      (Continuously variable transaxle assembly (Transmission Wire))

      Disconnect the B74 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 (DS2) - Body ground 20°C (68°F) 11 to 13 Ω
      10 (DS1) - Body ground 20°C (68°F) 11 to 13 Ω

    NG

    REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY Click here

    OK

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


    1. Reconnect the B74 transmission wire connector.

    2. Disconnect the B22 (for LHD) or B23 (for RHD) ECM connector.

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

      Standard Resistance (for LHD)
      Tester Connection Condition Specified Condition
      B22-69 (DS2) - B22-16 (E1) 20°C (68°F) 11 to 13 Ω
      B22-70 (DS1) - B22-16 (E1) 20°C (68°F) 11 to 13 Ω
      Standard Resistance (for RHD)
      Tester Connection Condition Specified Condition
      B23-69 (DS2) - B23-16 (E1) 20°C (68°F) 11 to 13 Ω
      B23-70 (DS1) - B23-16 (E1) 20°C (68°F) 11 to 13 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  5. PERFORM INITIALIZATION

    Note


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

      • Skid control computer (w/o VSC)

      • Oil pressure sensor

      • Deceleration sensor (w/o VSC)

      • Airbag sensor assembly (Yaw rate sensor) (w/ VSC)

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

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

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


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

    2. Check that no DTC is stored.


    NEXT

    END

  6. REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY


    1. Replace the continuously variable transaxle assembly Click here.


    NEXT

  7. PERFORM INITIALIZATION

    Note


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

      • Skid control computer (w/o VSC)

      • Oil pressure sensor

      • Deceleration sensor (w/o VSC)

      • Airbag sensor assembly (Yaw rate sensor) (w/ VSC)

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

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

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


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

    2. Check that no DTC is stored.


    NEXT

    END