CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM(for 1ZR-FAE), Diagnostic DTC:P1589

DTC Code DTC Name
P1589 Acceleration Sensor Learning Value

DESCRIPTION

The ECM stores this DTC if Deceleration Sensor Zero Point Calibration is not performed or has failed after system components such as the ECM have been 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

  1. DTC Detection Condition 1

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

  3. Deceleration Sensor Zero Point Calibration has not been completed.

  4. Immediately

  5. 1-trip detection logic

  1. DTC Detection Condition 2

  2. Deceleration Sensor Zero Point Calibration is performed.

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

  4. Immediately

  5. 1-trip detection logic

  • DTC Detection Condition 1:

  • Deceleration Sensor Zero Point Calibration has not been performed.

  • DTC Detection Condition 2:

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

  • Airbag sensor assembly (Yaw rate and acceleration sensor)

  • ECM

Does not come on

DTC stored

CAUTION / NOTICE / HINT

Tip:

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

  1. Drive the vehicle 2 km/h (1 mph) or more.

  2. Check for DTCs again.

    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 will be 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, there may be a malfunction in the airbag sensor assembly (yaw rate and acceleration sensor) circuit.

      • 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.

      Click here

    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 perform Reset Memory and clear the learned values.

    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 Sensor Zero Point Calibration is performed when the ignition switch is turned ON (engine stopped). However, CVT Oil Pressure Sensor Zero Point Calibration will not be performed under the following conditions:

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

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

    4. 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.

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

      Powertrain > Engine and ECT > Utility

      Tester Display

      CVT Oil Pressure Calibration
      Tip:

      • When performing 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.

    6. Check for DTCs again.

      Click here

      Powertrain > Engine and ECT > Trouble Codes

    Result

    Proceed to

    NEXT
    NEXT

    END

  3. CHECK AIRBAG SENSOR ASSEMBLY

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

      OK

      The airbag sensor assembly (yaw rate and acceleration sensor) 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.

    5. According to 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 yaw rate and acceleration sensor assembly

      Min.: 0 V

      Max.: 79.998 V

      • 2.31 to 2.69 V: Vehicle on level ground

      • 1.88 to 2.5 V: Decelerating

      • 2.5 to 3.11 V: Accelerating

      • Stuck at 1.87 V: G sensor malfunction

      • Stuck at 1.87 V: Communication malfunction

      -

      Powertrain > Engine and ECT > Data List

      Tester Display

      G Sensor

    Result

    Result

    Proceed to

    Data List value is normal

    A

    Data List value is not normal

    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 airbag sensor assembly (yaw rate and acceleration sensor).

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    PERFORM INITIALIZATION

    Click here