CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM, Diagnostic DTC:P1589

DTC Code DTC Name
P1589 Acceleration Sensor Learning Value

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P1589

Acceleration Sensor Learning Value

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other

DTC Detection Condition 1:

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

  2. Deceleration sensor zero point calibration has not been completed.

  3. When the above abnormal condition is met.

  4. 1-trip detection logic

DTC Detection Condition 2:

  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. When the above abnormal condition is met.

  4. 1-trip detection logic

DTC Detection Condition 1:

  • Deceleration sensor zero point calibration has not been performed.

DTC Detection Condition 2:

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

  • Yaw rate and acceleration sensor (Airbag sensor assembly)

  • ECM

Does not come on

DTC stored

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

      Powertrain > Engine and ECT > Utility

      Tester Display

      Reset Memory

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

      Powertrain > Engine and ECT > Utility

      Tester Display

      Deceleration Sensor Zero Point Calibration
      Tip:

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

      • If "Error" is displayed on the screen, the deceleration 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

    CHECK AIRBAG SENSOR ASSEMBLYClick 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.

      Tip:

      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 -5°C (23°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.

      Tip:

      • 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.

      Powertrain > Engine and ECT > Utility

      Tester Display

      CVT Oil Pressure Calibration

    7. Check for DTCs again.

      Powertrain > Engine and ECT > Trouble Codes

    Result

    Proceed to

    NEXT
    NEXT

    END

  3. CHECK AIRBAG SENSOR ASSEMBLY

    1. Check the yaw rate and acceleration sensor (airbag sensor assembly) for any inclination, bracket deformation or installation clearance.

      OK

      The yaw rate and acceleration sensor (airbag sensor assembly) is installed correctly.

    Result

    Proceed to

    OK

    NG
    NG

    SECURELY INSTALL AIRBAG SENSOR ASSEMBLY

    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.

      Powertrain > Engine and ECT > Data List

      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

      -

      Powertrain > Engine and ECT > Data List

      Tester Display

      G Sensor

    Result

    Result

    Proceed to

    Data display is within Normal Condition range

    A

    Data display is not within Normal Condition range

    B
    B

    REPLACE AIRBAG SENSOR ASSEMBLYClick here

    A

  5. REPLACE ECM

    1. Replace the ECM.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    PERFORM INITIALIZATION

    Click here

  6. REPLACE AIRBAG SENSOR ASSEMBLY

    1. Replace the yaw rate and acceleration sensor (airbag sensor assembly).

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    PERFORM INITIALIZATION

    Click here