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 failed after system components such as the ECM are replaced.

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. 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. Deceleration Sensor Zero Point Calibration is performed.

  2. The learned values of Deceleration Sensor Zero Point Calibration are abnormal (out of normal range).

  3. -

  4. 1-trip detection logic

  • Vehicle was not stabilized during Deceleration Sensor Zero Point Calibration.

  • Yaw rate sensor

  • ECM

CAUTION / NOTICE / HINT

Note


  • Perform initialization when parts related to the continuously variable transaxle are replaced Click here.

  • Check that no DTCs are stored after performing initialization Click here.

PROCEDURE


  1. PERFORM INITIALIZATION (DECELERATION SENSOR ZERO POINT CALIBRATION)

    Note


    • If CVT Oil Pressure Calibration is performed before 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 calibration with the vehicle on level ground (Inclination: 0 +/-0.25°).

    • Do not shake or vibrate the vehicle during 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 / Engine and ECT / Utility / Deceleration Sensor Zero Point Calibration.*5

      Tech Tips


      • When "Complete" is displayed on the screen, Deceleration Sensor Zero Point Calibration is complete.

      • If "Error" is displayed on the screen, the yaw rate sensor circuit may be malfunctioning.

      • Shaking or vibrating the vehicle during Deceleration Sensor Zero Point Calibration may cancel 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

    INSPECT YAW RATE SENSOR Click here

    A

  2. PERFORM CVT OIL PRESSURE CALIBRATION

    Note

    Do not clear 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, calibration cannot be performed under the following conditions:


      • Oil pressure sensor value is 0.065 MPa (0.663 kgf/cm2, 9.43 psi) or higher.

      • CVT oil temperature is 0°C (32°F) or less or 120°C (248°F) or higher.

    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 CVT Oil Pressure Calibration, the engine idle speed will increase.

      • When "Complete" is displayed on the screen, CVT Oil Pressure Calibration is complete.

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

    7. Check for DTCs again Click here.


    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 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 / Primary.

    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 G sensor/

      Min.: 0 V

      Max.: 79.998 V

      Displays converted voltage of G 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 display is within Normal Condition range A
      Data display is not within Normal Condition range B

    B

    REPLACE YAW RATE SENSOR Click here

    A

  5. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

    PERFORM INITIALIZATION Click here

  6. REPLACE YAW RATE SENSOR


    1. Replace the yaw rate sensor Click here.


    NEXT

    PERFORM INITIALIZATION Click here