SFI SYSTEM, Diagnostic DTC:P158900

DTC Code DTC Name
P158900 Acceleration Sensor Learning Value

DESCRIPTION

The ECM stores this DTC if Deceleration Sensor Zero Point Calibration of the CVT system has not been 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 Note
P158900 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. Immediately

  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. Immediately

  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 stable during Deceleration Sensor Zero Point Calibration.

  • Airbag sensor assembly (Yaw rate and acceleration sensor)

  • ECM

 Does not come on DTC stored SAE Code: P1589

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the ignition switch to ON.

  3. Turn the GTS on.

  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

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

  6. Start the engine.

  7. Turn the GTS on.

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

    CAUTION:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

  9. Enter the following menus: Powertrain / Engine / Trouble Codes.

  10. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  12. Input the DTC: P158900.

  13. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

CAUTION / NOTICE / HINT

Note


  • Perform initialization after replacing any parts related to the system.

  • Check that no DTCs are stored after performing initialization.

  • After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

    Click here

Tech Tips

Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. PERFORM INITIALIZATION (DECELERATION SENSOR ZERO POINT CALIBRATION)

    Note


    • If CVT Oil Pressure Calibration is performed before Deceleration Sensor Zero Point Calibration, DTC P158900 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 / Transmission / Utility / Reset Memory.*4


      Powertrain > Transmission > Utility
      Tester Display
      Reset Memory

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


      Powertrain > Engine > Utility
      Tester Display
      Deceleration Sensor Zero Point Calibration

      Tech Tips


      • 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.

      Result
      Result Proceed to
      Deceleration Sensor Zero Point Calibration is completed normally A
      DTC P158900 is output B

    B

    CHECK AIRBAG SENSOR ASSEMBLY Click here

    A

  2. PERFORM CVT OIL PRESSURE CALIBRATION

    Note

    Do not perform Reset Memory and clear the learned values (CVT system).


    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 Sensor Zero Point Calibration is performed when the ignition switch is turned to 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 higher.

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

    4. Enter the following menus: Powertrain / Transmission / Utility / CVT Oil Pressure Calibration


      Powertrain > Transmission > Utility
      Tester Display
      CVT Oil Pressure Calibration

      Tech Tips


      • 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.

    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. Perform the CVT Oil Pressure Calibration.

    7. Check for DTCs again.

      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 (ACCELERATION SENSOR VOLTAGE)


    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 / Data List / All Data / Acceleration Sensor Voltage.


      Powertrain > Engine > Data List
      Tester Display
      Acceleration Sensor Voltage

    5. According to the display on the GTS, read the Data List.


      Powertrain > Engine > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Acceleration Sensor Voltage Converted output voltage of G sensor

      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

      		 -
      Result
      Result Proceed to
      Data List value is normal A
      Data List value is not normal B

    B

    REPLACE AIRBAG SENSOR ASSEMBLY Click 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