CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P1589

DTC Code DTC Name
P1589 Acceleration Sensor Learning Value

DESCRIPTION

The ECM stores DTC P1589 if the deceleration sensor zero point calibration is not performed or is failed after system components such as the ECM are replaced.

DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P1589

  1. The vehicle speed is 2 km/h (1.2 mph) or more.

  2. The deceleration sensor zero point calibration has not been completed.

  3. -

  4. 1 trip detection logic

 Deceleration sensor zero point calibration has not been performed

  1. The deceleration sensor zero point calibration is performed.

  2. The learned values of the deceleration sensor zero point calibration are abnormal (out of normal range).

  3. -

  4. 1 trip detection logic

  • Vehicle was not stabilized during the deceleration sensor zero point calibration

  • Deceleration sensor

  • ECM

PROCEDURE


  1. PERFORM INITIALIZATION (DECELERATION SENSOR ZERO POINT CALIBRATION)

    Note


    • If the CVT oil pressure calibration is performed before the deceleration sensor zero point calibration, DTC P1589 is stored. In this case, perform steps *1, *2, *3, *4 and *5 to return the system to normal.

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

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


    1. Turn the ignition switch off.*1

    2. Move the shift lever to P and apply the parking brake.*2

    3. Connect the GTS to the DLC3.

    4. Turn the ignition switch to ON.*3

      Note

      Do not start the engine.

    5. Enter the following menus: Powertrain / Engine and ECT / Utility / Reset Memory.*4

    6. Enter the following menus: Powertrain / ECT / Utility / Deceleration Sensor Zero Point Calibration.*5

      Tech Tips


      • When "Complete" is displayed on the screen, the deceleration sensor zero point calibration is completed.

      • If "Error" is displayed on the screen, the deceleration sensor circuit may have a malfunction.

      • Shaking or vibrating the vehicle during the zero point calibration may cancel the calibration. If "Error" is displayed on the screen, perform step *5 again.

    7. If "Error" is displayed on the GTS, read the DTCs using the GTS.

      Result
      Result Proceed to
      Deceleration sensor zero point calibration is completed normally A
      DTC P1589 is output B

    B

    CHECK DECELERATION SENSOR Click here

    A

  2. PERFORM CVT OIL PRESSURE CALIBRATION

    Note

    Do not initialize the learned values by performing reset memory.


    1. Turn the ignition switch off and wait at least 30 seconds.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON and wait at least 2 seconds.

      Note

      Do not start the engine.

      Tech Tips

      CVT oil pressure calibration is performed with the ignition switch ON (engine stopped). However, the calibration cannot be performed under the following conditions:


      • When the oil pressure sensor value is 0.065 MPa (0.663 kgf/cm2, 9.43 psi) or more

      • When the CVT oil temperature is -5°C (23°F) or less or 100°C (212°F) or more

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

    5. Start the engine and wait at least 5 seconds.

      Note


      • Start the engine with the shift lever in P.

      • After starting the engine, do not operate the accelerator pedal.

    6. Enter the following menus: Powertrain / Engine and ECT / Utility / CVT Oil Pressure Calibration.

      Tech Tips


      • During the CVT oil pressure calibration, the engine idle speed will increase.

      • When "Complete" is displayed on the screen, the CVT oil pressure calibration is completed.

      • The learned values cannot be cleared by only disconnecting and reconnecting the cable to the negative (-) battery terminal.

    7. Check for DTCs again.


    NEXT

    END

  3. CHECK DECELERATION SENSOR


    1. Check the deceleration sensor for any inclination, bracket deformation or installation clearance.

      OK
      The deceleration sensor is installed correctly.

    NG

    SECURELY INSTALL DECELERATION SENSOR Click here

    OK

  4. READ VALUE USING GTS (G SENSOR)


    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.

    5. In accordance with the display on the GTS, read the Data List.

      Engine and ECT
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      G sensor

      Converted output voltage of deceleration sensor/

      min.: 0 V

      max.: 5 V

      Displays converted voltage of deceleration sensor


      • 2.31 V to 2.69 V: Vehicle on level ground

      • 1.88 V to 2.5 V: Decelerating

      • 2.5 V to 3.11 V: Accelerating

      • Set to 1.87 V: G sensor malfunction

      • Set to 1.87 V: Communication malfunction

      		 -
      Result
      Result Proceed to
      Data displayed is within Normal Condition range A
      Data displayed is not within Normal Condition range B

    B

    REPLACE DECELERATION SENSOR Click here

    A

  5. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  6. PERFORM INITIALIZATION

    Note


    • Performing reset memory/initialization will clear the learned value of the deceleration 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 when replacing any of the parts shown in the following table:

      Replaced Part

      • Continuously variable transaxle assembly

      • ECM

      • Brake actuator assembly (Skid control ECU)

      • Oil pressure sensor

      • Deceleration sensor

    • After reset memory, always perform deceleration sensor (deceleration sensor zero point) calibration first, and then the CVT oil pressure calibration.

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

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


    1. Using the GTS, perform the reset memory, deceleration sensor zero point calibration and CVT oil pressure calibration Click here.

    2. Check for DTCs again Click here.


    NEXT

    END

  7. REPLACE DECELERATION SENSOR


    1. Replace the deceleration sensor Click here.


    NEXT

  8. PERFORM INITIALIZATION

    Note


    • Performing reset memory/initialization will clear the learned value of the deceleration 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 when replacing any of the parts shown in the following table:

      Replaced Part

      • Continuously variable transaxle assembly

      • ECM

      • Brake actuator assembly (Skid control ECU)

      • Oil pressure sensor

      • Deceleration sensor

    • After reset memory, always perform deceleration sensor (deceleration sensor zero point) calibration first, and then the CVT oil pressure calibration.

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

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


    1. Using the GTS, perform the reset memory, deceleration sensor zero point calibration and CVT oil pressure calibration Click here.

    2. Check for DTCs again Click here.


    NEXT

    END