CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P1589

DTC Code DTC Name
P1589 Acceleration Sensor Learning Value

DESCRIPTION

The ECM stores DTC P1589 if the ECM or other components are replaced that require the yaw rate sensor to be calibrated (deceleration sensor 0 point calibration) and calibration is terminated or the vehicle is driven before calibration is complete.

DTC Code

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 0 point calibration has not been completed.

  3. -

  4. 1 trip detection logic

 Deceleration sensor 0 point calibration has not been performed

  1. The deceleration sensor 0 point calibration is performed.

  2. The learned values of the deceleration sensor 0 point calibration are abnormal (out of normal range).

  3. -

  4. 1 trip detection logic

  • Vehicle was not stabilized during the deceleration sensor 0 point calibration

  • Yaw rate sensor

  • ECM

INSPECTION PROCEDURE

PROCEDURE


  1. PERFORM INITIALIZATION (DECELERATION SENSOR 0 POINT CALIBRATION)

    Note


    • If the CVT oil pressure calibration is performed before the deceleration sensor 0 point calibration, DTC P1589 is stored. In this case, perform the steps below to return the system to normal.

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

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


    1. Turn the ignition switch off.

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

    3. Connect the tester to the DLC3.

    4. Turn the ignition switch to ON.

      Note

      Do not start the engine.

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

    6. Enter the following menus: Powertrain / Engine and ECT / Utility / Deceleration Sensor 0 Point Calibration.

      Tech Tips


      • When "Complete" is displayed on the screen, the deceleration sensor 0 point calibration is completed.

      • If "Error" is displayed on the screen and DTC P1589 is output (confirm the DTC detection conditions), the yaw rate sensor circuit may have a malfunction.

      • Shaking or vibrating the vehicle during 0 point calibration may cancel calibration. If "Error" is displayed on the screen and DTC P1589 is not output, perform calibration again.

      Result
      Result Proceed to
      Deceleration sensor 0 point calibration is completed normally A
      P1589 is output B

    B

    INSPECT YAW RATE SENSOR Click here

    A

  2. PERFORM INITIALIZATION (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 intelligent tester to the DLC3.

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

      Note

      Do not start the engine.

    4. Turn the intelligent tester on.

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

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

    7. 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.

    8. Check that no DTC is stored.


    NEXT

    END

  3. INSPECT YAW RATE SENSOR


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

      OK
      The yaw rate sensor is installed correctly.

    NG

    SECURELY INSTALL OR REPLACE YAW RATE SENSOR Click here

    OK

  4. READ VALUE USING INTELLIGENT TESTER (G SENSOR)


    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 / Data List.

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

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

      Converted output voltage of yaw rate sensor/

      min.: 0 V

      max.: 5 V

      Displays converted voltage of yaw rate sensor


      • Vehicle on level ground: 2.31 V to 2.69 V

      • Decelerating: 1.88 V to 2.5 V

      • Accelerating: 2.5 V to 3.11 V

      • G sensor malfunction: Set to 1.87 V

      • Communication malfunction: Set to 1.87 V

      		 -
      Result
      Result Proceed to
      Data displayed is not as specified under Normal Condition A
      Data displayed is as specified under Normal Condition B

    B

    Click here

    A

  5. REPLACE YAW RATE SENSOR


    1. Replace the yaw rate sensor Click here.


    NEXT

  6. 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.


    NEXT

    END

  7. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  8. 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.


    NEXT

    END