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

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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)
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DESCRIPTION

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

DTC Code

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P0962

  1. The vehicle is driven so that gear ratio changes occur.

  2. There is a short circuit in the shift solenoid valve DS1 circuit.

  3. 20 times

  4. 1 trip detection logic

  • Short in shift solenoid valve DS1 circuit

  • Continuously variable transaxle assembly

  • ECM
P0963

  1. The vehicle is driven so that gear ratio changes occur.

  2. There is an open circuit in the shift solenoid valve DS1 circuit.

  3. 20 times

  4. 1 trip detection logic

  • Open in shift solenoid valve DS1 circuit

  • Continuously variable transaxle assembly

  • ECM
P0966

  1. The vehicle is driven so that gear ratio changes occur.

  2. There is a short circuit in the shift solenoid valve DS2 circuit.

  3. 20 times

  4. 1 trip detection logic

  • Short in shift solenoid valve DS2 circuit

  • Continuously variable transaxle assembly

  • ECM
P0967

  1. The vehicle is driven so that gear ratio changes occur.

  2. There is an open circuit in the shift solenoid valve DS2 circuit.

  3. 20 times

  4. 1 trip detection logic

  • Open in shift solenoid valve DS2 circuit

  • Continuously variable transaxle assembly

  • ECM
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MONITOR DESCRIPTION

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

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WIRING DIAGRAM

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INSPECTION PROCEDURE

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PROCEDURE


  1. Click here

    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 intelligent 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.

      Table 1. Engine and ECT
      Tester Display Test Part Control Range Diagnostic Note
      Control the Shift Position

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

      Reference gear ratios:

      1st (2.4) - 2nd (1.5) - 3rd (1.0) - 4th (0.7) - 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]

      Vehicle speed: 20 to 45 km/h (10.8 to 24.3 mph)
      Table 2. Result
      Result Proceed to
      Gear ratio does not change A
      Gear ratio changes B

  2. Click here

    INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE DS1 AND DS2)


    1. A01IPWEE07

      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
      4 (DS2) - Body ground 20°C (68°F) 11 to 13 Ω
      9 (DS1) - Body ground 20°C (68°F) 11 to 13 Ω
      Table 3. Text in Illustration
      *1

      Component without harness connected

      (Transmission Wire)

  3. Click here

    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)


    1. A01IUJYE44

      Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C68-55 (DS2) - Body ground 20°C (68°F) 11 to 13 Ω
      C68-56 (DS1) - Body ground 20°C (68°F) 11 to 13 Ω
      Table 4. Text in Illustration
      *1

      Front view of wire harness connector

      (to ECM)

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    REPLACE ECM


    1. Replace the ECM (Click here).


  5. Click here

    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

      • Oil pressure sensor

      • Yaw rate sensor

    • 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.


  6. Click here

    END

  7. Click here

    REPLACE ECM


    1. Replace the ECM (Click here).


  8. Click here

    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

      • Oil pressure sensor

      • Yaw rate sensor

    • 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.


  9. Click here

    END

  10. Click here

    REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY


    1. Replace the continuously variable transaxle assembly (Click here).


  11. Click here

    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

      • Oil pressure sensor

      • Yaw rate sensor

    • 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.


  12. Click here

    END

  13. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR