CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P0962,P0963,P0966 and 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 the 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 is short or open is detected in a solenoid circuit, the ECM stops current to the faulty solenoid.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P0962

Pressure Control Solenoid "A" Control Circuit Low (Shift Solenoid Valve DS1)

  1. Diagnosis Condition

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

  3. Malfunction Status

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

  5. Malfunction Time

    • 20 times

  7. Other

    • 1-trip detection logic

  • Wire harness or connector

  • Continuously variable transaxle assembly (Shift solenoid valve DS1)

  • ECM

Comes on

DTC stored

P0963

Pressure Control Solenoid "A" Control Circuit High (Shift Solenoid Valve DS1)

  1. Diagnosis Condition

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

  3. Malfunction Status

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

  5. Malfunction Time

    • 20 times

  7. Other

    • 1-trip detection logic

  • Wire harness or connector

  • Continuously variable transaxle assembly (Shift solenoid valve DS1)

  • ECM

Comes on

DTC stored

P0966

Pressure Control Solenoid "B" Control Circuit Low (Shift Solenoid Valve DS2)

  1. Diagnosis Condition

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

  3. Malfunction Status

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

  5. Malfunction Time

    • 20 times

  7. Other

    • 1-trip detection logic

  • Wire harness or connector

  • Continuously variable transaxle assembly (Shift solenoid valve DS2)

  • ECM

Comes on

DTC stored

P0967

Pressure Control Solenoid "B" Control Circuit High (Shift Solenoid Valve DS2)

  1. Diagnosis Condition

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

  3. Malfunction Status

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

  5. Malfunction Time

    • 20 times

  7. Other

    • 1-trip detection logic

  • Wire harness or connector

  • Continuously variable transaxle assembly (Shift solenoid valve DS2)

  • ECM

Comes on

DTC stored

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 circuit, the ECM detects the problem, illuminates the MIL and stores a DTC.

WIRING DIAGRAM

C264291E10

PROCEDURE

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

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List.

      Powertrain > Engine and ECT > Data List

      Tester Display

      Measurement Item

      Range

      Normal Condition

      Diagnostic Note

      Shift Status

      ECM gearshift command

      1st, 2nd, 3rd, 4th or 5th

      Same as actual shift position

      *1
      Tip:

      *1:"Shift Status" is a signal divided into 5 gear positions for Active Test.

      It does not express gear ratios for normal driving and gear positions for 7-speed sport sequential shiftmatic mode.

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

    6. In accordance with the display on the GTS, perform the Active Test.

      Powertrain > Engine and ECT > Active Test

      Tester Display

      Measurement Item

      Control Range

      Diagnostic Note

      Control the Shift Position

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

      Reference gear ratios:

      1st (2.4 gear ratio max.) - 2nd (1.5) - 3rd (1.0) - 4th (0.7) - 5th (0.43 gear ratio min.)

      • Press "→" button: Shift up

      • Press "←" button: Shift down

      Used to check the operation of the shift solenoid valves.

      [Vehicle Condition]

      Perform at a vehicle speed of 45 km/h (28 mph) or less.

      Note:

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

      Tip:

      Perform "Control the Shift Position" while monitoring "Shift Status" to confirm actual gear position.

    Result

    Result

    Proceed to

    Gear position does not change

    A

    Gear position changes

    B
    B

    REPLACE ECMClick here

    A

  2. INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE DS1 AND DS2)

    1. C225476C31

      *a

      Component without harness connected

      (Transmission Wire)

      Disconnect the B90 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 and other terminals

      20°C (68°F)

      11 to 13 Ω

      9 (DS1) - Body ground and other terminals

      20°C (68°F)

      11 to 13 Ω

    3. Connect the B90 transmission wire connector.

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLYClick here

    OK

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

    1. Disconnect the B31 ECM connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B31-70 (DS1) - B31-16 (E1)

      20°C (68°F)

      11 to 13 Ω

      B31-69 (DS2) - B31-16 (E1)

      20°C (68°F)

      11 to 13 Ω

    3. Connect the B31 ECM connector.

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM)

    OK

  4. REPLACE ECM

    1. Replace the ECM.

      for 1ZR-FE:Click here

      for 2ZR-FE:Click here

    Result

    Proceed to

    NEXT
    NEXT

    PERFORM INITIALIZATION

    Click here

  5. REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY

    1. Replace the continuously variable transaxle assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    PERFORM INITIALIZATION

    Click here

  6. REPLACE ECM

    1. Replace the ECM.

      for 1ZR-FE:Click here

      for 2ZR-FE:Click here

    Result

    Proceed to

    NEXT
    NEXT

    PERFORM INITIALIZATION

    Click here