CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P084000, P28287F

DTC Code DTC Name
P084000 Transmission Fluid Pressure Sensor/Switch "A" Circuit Range/Performance
P28287F Pressure Control Solenoid "K" Actuator Stuck Off

DESCRIPTION

The ECM controls the secondary oil pressure based on the secondary oil pressure signal output by the oil pressure sensor.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P084000 Transmission Fluid Pressure Sensor/Switch "A" Circuit Range/Performance

Either one of the following conditions is met (1 trip detection logic):


  • When the requested oil pressure is 1.4 MPa (14.3 kgf/cm2, 203 psi) or more, the oil pressure sensor output is 0.5 MPa (5.1 kgf/cm2, 73 psi) or less for 2 seconds or more.

  • When the requested oil pressure is 1.0 MPa (10.2 kgf/cm2, 145 psi) or less, the difference between the calculated primary pulley pressure and target primary pulley pressure is 2.0 MPa (20.4 kgf/cm2, 290 psi) or more for 3 seconds or more.

  • Oil pressure sensor

  • ECM

Comes on (Euro-OBD)

Does not come on (Except Euro-OBD)

 DTC stored

SAE Code:

P0841
P28287F Pressure Control Solenoid "K" Actuator Stuck Off

One of the following conditions is met (1 trip detection logic):


  • When the requested oil pressure is 1.0 MPa (10.2 kgf/cm2, 145 psi) or less, the oil pressure sensor output is 2.5 MPa (25.5 kgf/cm2, 363 psi) or more for 3 seconds or more.

  • When the vehicle speed is less than 8 km/h (5 mph), the ratio of the transmission revolution sensor (NIN) output speed and transmission revolution sensor (NOUT) output speed exceeds a specified value for 0.2 seconds or more.

  • When the oil pressure sensor output is less than 0.35 MPa (3.6 kgf/cm2, 51 psi) and the target gear ratio is 2.0 or more, the actual gear ratio is less than 1.0 for 1.5 seconds or more.

  • Continuously variable transaxle assembly

  • ECM

Comes on (Euro-OBD)

Does not come on (Except Euro-OBD)

 DTC stored

SAE Code:

P2829
DTC Detection Condition Patterns (P084000):
Vehicle Condition
Pattern 1 Pattern 2
Diagnostic Condition

The requested oil pressure value is 1.4 MPa (14.3 kgf/cm2, 203 psi) or more.

 ○ -

The requested oil pressure value is 1.0 MPa (10.2 kgf/cm2, 145 psi) or less.

 - ○
Malfunction Condition

The oil pressure sensor output value is 0.5 MPa (5.1 kgf/cm2, 73 psi) or less.

 ○ -

The difference between the calculated primary pulley pressure and target primary pulley pressure is 2.0 MPa (20.4 kgf/cm2, 290 psi) or more.

 - ○
Duration 2 seconds or more 3 seconds or more
Detection Logic 1 trip detection logic 1 trip detection logic

Tech Tips

This DTC is output when either of the above detection patterns is met.

DTC Detection Condition Patterns (P28287F):
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3
Diagnostic Condition

The requested oil pressure value is 1.0 MPa (10.2 kgf/cm2, 145 psi) or less.

 ○ - -
The shift lever is in D, and the vehicle speed is less than 8 km/h (5 mph). - ○ -

The oil pressure sensor output value is less than 0.35 MPa (3.6 kgf/cm2, 51 psi) and the target gear ratio is 2.0 or more.

 - - ○
Malfunction Condition

The oil pressure sensor output value is 2.5 MPa (25.5 kgf/cm2, 363 psi) or more.

 ○ - -
The ratio of the transmission revolution sensor (NIN) output speed and transmission revolution sensor (NOUT) output speed exceeds a specified value. - ○ -
The actual gear ratio is less than 1.0. - - ○
Duration 3 seconds or more 0.2 seconds or more 1.5 seconds or more
Detection Logic 1 trip detection logic 1 trip detection logic 1 trip detection logic

Tech Tips

This DTC is output when any one of the above detection patterns is met.

MONITOR DESCRIPTION

The ECM checks for belt clamping high-pressure or low-pressure malfunctions. If a mechanical malfunction of the shift solenoid valve SLS or the oil pressure sensor is detected by the ECM, it illuminates the MIL* and stores a DTC.

*: Euro-OBD

CAUTION / NOTICE / HINT

CAUTION:


  • A001VIT

    Do not perform a stall test if there are any people or objects near the vehicle.

  • The vehicle could begin moving suddenly, resulting in a serious accident.

  • A001VMJ

    Do not perform a stall test if any wheel chocks are out of position.

  • The vehicle could begin moving suddenly, resulting in a serious accident.

  • A001XRV

    Do not perform the stall test on a slippery or low-friction surface that could allow the tires to spin.

  • The vehicle could begin moving suddenly, resulting in a serious accident.

Note


  • Perform initialization after replacing any parts related to the continuously variable transaxle system.

    Click here

  • Check that no DTCs are stored after performing initialization.

    Click here

Tech Tips

After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Perform the D position test in Road Test.

    Click here

  2. Check for DTCs again.

    Click here

PROCEDURE


  1. CHECK DTC OUTPUT (IN ADDITION TO DTC P084000 AND P28287F)


    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 / Transmission / Trouble Codes.


      Powertrain > Transmission > Trouble Codes

    5. Read the DTCs using the GTS.

      Tech Tips

      If any DTCs other than P084000 or P28287F are output, perform troubleshooting for those DTCs first.

      Result
      Result Proceed to
      Both DTC P084000 and P28287F are output A
      Only DTC P084000 is output B
      Only DTC P28287F is output C
      DTC P084000 and/or P28287F and other DTCs are output D

    B

    READ VALUE USING GTS (BELT CLAMPING FORCE SENSOR) Click here

    C

    READ VALUE USING GTS (BELT CLAMPING FORCE SENSOR) Click here

    D

    GO TO DTC CHART Click here

    A

  2. READ VALUE USING GTS (BELT CLAMPING FORCE SENSOR)

    CAUTION:


    • Do not perform a stall test if there are any people or objects near the vehicle.

    • Do not perform a stall test if any wheel chocks are out of position.

    • Do not perform the stall test on a slippery or low-friction surface that could allow the tires to spin.

    Note


    • This test must be performed after checking and confirming that the engine is normal.

    • Perform this test with the CVT fluid temperature between 50 and 100°C (122 and 212°F).

    • Perform this test with the air conditioning off.

    • Do not perform the stall speed test for longer than 5 seconds

    • When performing the stall speed test repeatedly, wait for 15 seconds or more between tests.


    1. Warm up the engine.

    2. Fully apply the parking brake and chock all 4 wheels.

    3. Connect the GTS to the DLC3.

    4. Turn the ignition switch to ON.

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / Transmission / Active Test / Activate the TC Terminal.


      Powertrain > Transmission > Active Test
      Active Test Display
      Activate the TC Terminal
      Data List Display
      Belt Clamping Force Sensor

    7. According to the display on the GTS, perform the Active Test.

    8. According to the display on the GTS, read the Data List.


      Powertrain > Transmission > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Belt Clamping Force Sensor Secondary oil pressure value

      Min.: -64 MPa

      Max.: 63.998 MPa

      Secondary oil pressure inspection:


      • 3.5 to 5.5 MPa (35.6 to 56.1 kgf/cm2, 507 to 798 psi): D position stall test

      • 3.6 to 5.5 MPa (36.7 to 56.1 kgf/cm2, 522 to 798 psi): R position stall test

      		 -
      Result
      Result Proceed to
      Data List value is normal A
      Data List value is not normal B

    B

    REPLACE OIL PRESSURE SENSOR Click here

    A

  3. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here

  4. REPLACE OIL PRESSURE SENSOR


    1. Replace the oil pressure sensor.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  5. CLEAR DTC


    1. Clear the DTCs.


      Powertrain > Transmission > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  6. PERFORM INITIALIZATION

    Note


    • Performing Reset Memory will clear the learned values of the yaw rate and acceleration sensor (Deceleration Sensor Zero Point Calibration) and the CVT oil pressure (CVT Oil Pressure Calibration). Make sure to perform Reset Memory, Deceleration Sensor Zero Point Calibration, and CVT Oil Pressure Calibration if any of the parts in the following table have been replaced.

      Replaced Part

      • Continuously variable transaxle assembly

      • ECM

      • Oil pressure sensor

      • Airbag sensor assembly (Yaw rate and acceleration sensor)

    • After performing Reset Memory, always perform Deceleration Sensor Zero Point Calibration first, and then CVT Oil Pressure Calibration.

    • Always perform calibration with the vehicle on level ground (Inclination: 0 +/- 0.25°).

    • Do not shake or vibrate the vehicle during calibration.


    1. Using the GTS, perform Reset Memory, Deceleration Sensor Zero Point Calibration and CVT Oil Pressure Calibration.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  7. CHECK DTC OUTPUT


    1. Perform a road test.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Enter the following menus: Powertrain / Transmission / Trouble Codes.


      Powertrain > Transmission > Trouble Codes

    6. Read the DTCs using the GTS.

      Result
      Result Proceed to
      DTC P084000 and/or P28287F is output A
      DTCs are not output B

    B

    END

    A

  8. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  9. PERFORM INITIALIZATION

    Note


    • Performing Reset Memory will clear the learned values of the yaw rate and acceleration sensor (Deceleration Sensor Zero Point Calibration) and the CVT oil pressure (CVT Oil Pressure Calibration). Make sure to perform Reset Memory, Deceleration Sensor Zero Point Calibration, and CVT Oil Pressure Calibration if any of the parts in the following table have been replaced.

      Replaced Part

      • Continuously variable transaxle assembly

      • ECM

      • Oil pressure sensor

      • Airbag sensor assembly (Yaw rate and acceleration sensor)

    • After performing Reset Memory, always perform Deceleration Sensor Zero Point Calibration first, and then CVT Oil Pressure Calibration.

    • Always perform calibration with the vehicle on level ground (Inclination: 0 +/- 0.25°).

    • Do not shake or vibrate the vehicle during calibration.


    1. Using the GTS, perform Reset Memory, Deceleration Sensor Zero Point Calibration and CVT Oil Pressure Calibration.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  10. CHECK DTC OUTPUT


    1. Perform a road test.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Enter the following menus: Powertrain / Transmission / Trouble Codes.


      Powertrain > Transmission > Trouble Codes

    6. Read the DTCs using the GTS.

      Result
      Result Proceed to
      DTC P28287F is output A
      DTCs are not output B

    B

    END

    A

  11. REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY


    1. Replace the continuously variable transaxle assembly.


      • When Not Using the Engine Support Bridge

        Click here

      • When Using the Engine Support Bridge

        Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here

  12. READ VALUE USING GTS (BELT CLAMPING FORCE SENSOR)

    CAUTION:


    • Do not perform a stall test if there are any people or objects near the vehicle.

    • Do not perform a stall test if any wheel chocks are out of position.

    • Do not perform the stall test on a slippery or low-friction surface that could allow the tires to spin.

    Note


    • This test must be performed after checking and confirming that the engine is normal.

    • Perform this test with the CVT fluid temperature between 50 and 100°C (122 and 212°F).

    • Perform this test with the air conditioning off.

    • Do not perform the stall speed test for longer than 5 seconds

    • When performing the stall speed test repeatedly, wait for 15 seconds or more between tests.


    1. Warm up the engine.

    2. Fully apply the parking brake and chock all 4 wheels.

    3. Connect the GTS to the DLC3.

    4. Turn the ignition switch to ON.

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / Transmission / Active Test / Activate the TC Terminal.


      Powertrain > Transmission > Active Test
      Active Test Display
      Activate the TC Terminal
      Data List Display
      Belt Clamping Force Sensor

    7. According to the display on the GTS, perform the Active Test.

    8. According to the display on the GTS, read the Data List.


      Powertrain > Transmission > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Belt Clamping Force Sensor Secondary oil pressure value

      Min.: -64 MPa

      Max.: 63.998 MPa

      Secondary oil pressure inspection:


      • 3.5 to 5.5 MPa (35.6 to 56.1 kgf/cm2, 507 to 798 psi): D position stall test

      • 3.6 to 5.5 MPa (36.7 to 56.1 kgf/cm2, 522 to 798 psi): R position stall test

      		 -
      Result
      Result Proceed to
      Data List value is normal A
      Data List value is not normal B

    B

    REPLACE OIL PRESSURE SENSOR Click here

    A

  13. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here

  14. REPLACE OIL PRESSURE SENSOR


    1. Replace the oil pressure sensor.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  15. CLEAR DTC


    1. Clear the DTCs.


      Powertrain > Transmission > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  16. PERFORM INITIALIZATION

    Note


    • Performing Reset Memory will clear the learned values of the yaw rate and acceleration sensor (Deceleration Sensor Zero Point Calibration) and the CVT oil pressure (CVT Oil Pressure Calibration). Make sure to perform Reset Memory, Deceleration Sensor Zero Point Calibration, and CVT Oil Pressure Calibration if any of the parts in the following table have been replaced.

      Replaced Part

      • Continuously variable transaxle assembly

      • ECM

      • Oil pressure sensor

      • Airbag sensor assembly (Yaw rate and acceleration sensor)

    • After performing Reset Memory, always perform Deceleration Sensor Zero Point Calibration first, and then CVT Oil Pressure Calibration.

    • Always perform calibration with the vehicle on level ground (Inclination: 0 +/- 0.25°).

    • Do not shake or vibrate the vehicle during calibration.


    1. Using the GTS, perform Reset Memory, Deceleration Sensor Zero Point Calibration and CVT Oil Pressure Calibration.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  17. CHECK DTC OUTPUT


    1. Perform a road test.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Enter the following menus: Powertrain / Transmission / Trouble Codes.


      Powertrain > Transmission > Trouble Codes

    6. Read the DTCs using the GTS.

      Result
      Result Proceed to
      DTC P084000 is output A
      DTCs are not output B

    B

    END

    A

  18. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here

  19. READ VALUE USING GTS (BELT CLAMPING FORCE SENSOR)

    CAUTION:


    • Do not perform a stall test if there are any people or objects near the vehicle.

    • Do not perform a stall test if any wheel chocks are out of position.

    • Do not perform the stall test on a slippery or low-friction surface that could allow the tires to spin.

    Note


    • This test must be performed after checking and confirming that the engine is normal.

    • Perform this test with the CVT fluid temperature between 50 and 100°C (122 and 212°F).

    • Perform this test with the air conditioning off.

    • Do not perform the stall speed test for longer than 5 seconds

    • When performing the stall speed test repeatedly, wait for 15 seconds or more between tests.


    1. Warm up the engine.

    2. Fully apply the parking brake and chock all 4 wheels.

    3. Connect the GTS to the DLC3.

    4. Turn the ignition switch to ON.

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / Transmission / Active Test / Activate the TC Terminal.


      Powertrain > Transmission > Active Test
      Active Test Display
      Activate the TC Terminal
      Data List Display
      Belt Clamping Force Sensor

    7. According to the display on the GTS, perform the Active Test.

    8. According to the display on the GTS, read the Data List.


      Powertrain > Transmission > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Belt Clamping Force Sensor Secondary oil pressure value

      Min.: -64 MPa

      Max.: 63.998 MPa

      Secondary oil pressure inspection:


      • 3.5 to 5.5 MPa (35.6 to 56.1 kgf/cm2, 507 to 798 psi): D position stall test

      • 3.6 to 5.5 MPa (36.7 to 56.1 kgf/cm2, 522 to 798 psi): R position stall test

      		 -
      Result
      Result Proceed to
      Data List value is normal A
      Data List value is not normal B

    B

    REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY Click here

    A

  20. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here

  21. REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY


    1. Replace the continuously variable transaxle assembly.


      • When Not Using the Engine Support Bridge

        Click here

      • When Using the Engine Support Bridge

        Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here