STOP AND START SYSTEM, Diagnostic DTC:P1589

DTC Code DTC Name
P1589 G Sensor Zero Point Calibration Incomplete

DESCRIPTION

If the vehicle is driven before calibration of the deceleration sensor zero point is performed, the engine stop and start ECU stores this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory
P1589 G Sensor Zero Point Calibration Incomplete

Both of the following conditions are met for 5 seconds or more (1 trip detection logic):


  • The vehicle speed is 3 km/h (2 mph) or more and VSC communication is normal.

  • Deceleration sensor zero point calibration is incomplete

  • The deceleration sensor zero point calibration has not been performed.

  • Airbag ECU assembly (Deceleration sensor)

  • Engine stop and start ECU

 Blinks DTC stored

CONFIRMATION DRIVING PATTERN

Tech Tips

DTCs for the stop and start system are not cleared even if the malfunction has been repaired. After repairing the malfunction, be sure to clear the DTCs.

Click here


  1. Tech Tips


    • If the cable is disconnected from the negative (-) battery terminal, stop and start control is prohibited until refresh charge is completed. In this case, drive the vehicle approximately 5 to 40 minutes until refresh charge is completed and stop and start control operation is permitted.

    • Allow the engine to idle for 3 minutes after it is warmed up and check that the engine idle speed is within 50 rpm of the target idle speed.

    CONFIRMATION AFTER TROUBLESHOOTING


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG) and turn the GTS on.

    3. Clear the DTCs.

      Click here


      Powertrain > Stop and Start > Clear DTCs

    4. Start the engine and warm it up.

    5. Drive the vehicle at 3 km/h (1.9 mph) or more for 5 seconds or more.

    6. Check that DTCs are not output.

      Click here


      Powertrain > Stop and Start > Trouble Codes

  2. STOP AND START SYSTEM OPERATION CHECK

    Tech Tips

    If the cable is disconnected from the negative (-) battery terminal, stop and start control is prohibited until refresh charge is completed. In this case, drive the vehicle approximately 5 to 40 minutes until refresh charge is completed and stop and start control operation is permitted.


    1. Start the engine and warm it up.

    2. Turn the air conditioning system off.

    3. Drive the vehicle at 7 km/h (4.3 mph) or more.

      CAUTION:

      When performing Confirmation Driving Pattern, obey all speed limits and traffic laws.

    4. Depress the brake pedal and stop the vehicle.

    5. Allow the engine to stop by stop and start control. (Keep the shift lever in D.)

    6. Release the brake pedal with the shift lever in D to start the engine.

CAUTION / NOTICE / HINT

Note


  • for 8AR-FTS:

    Before replacing the engine stop and start ECU, read the number of starter operations and write it into a new engine stop and start ECU.

    Click here

  • for 3ZR-FAE:

    When replacing the engine stop and start ECU with a new one, make sure to download the previous status (number of starter operations) of the old engine stop and start ECU. After replacing the engine stop and start ECU, turn the engine switch on (IG) and wait 20 seconds, then confirm that "OK" is displayed for the Data List item "Oper Prohibition (O/P Air Bleeding)". Then upload the previous status (number of starter operations) to the engine stop and start ECU.

    Click here

  • After replacing the engine stop and start ECU or air conditioning amplifier assembly, reset and perform learning of the air conditioning information in the engine stop and start ECU.

    Click here

  • After replacing the engine stop and start ECU or airbag ECU assembly, clear and calibrate the deceleration sensor zero point in the engine stop and start ECU.

    Click here

Tech Tips

Using the GTS, read the freeze frame data before troubleshooting. System condition information is recorded as freeze frame data the moment a DTC is stored. This information can be useful when troubleshooting.

Click here

PROCEDURE


  1. PERFORM REGISTRATION (DECELERATION SENSOR ZERO POINT CLEAR, DECELERATION SENSOR ZERO POINT CALIBRATION)

    Note


    • Once the zero point is stored, it cannot be overwritten until the data is cleared. Be sure to perform zero point clear and calibration after replacing the airbag ECU assembly.

    • Park the vehicle on a level surface (grade: +/-1%). Do not shake the vehicle or open/close any of the doors during zero point calibration. To avoid vibration caused by the engine idling, do not start the engine.


    1. Clear the zero point calibration data. (*1)


      1. Turn the engine switch off.

      2. Connect the GTS to the DLC3.

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

      4. Turn the engine switch on (IG).

        Tech Tips

        Do not start the engine.

      5. Turn the GTS on.

      6. Enter the following menus: Powertrain / Stop and Start / Utility / Deceleration Sensor Zero Point Clear.


        Powertrain > Stop and Start > Utility
        Tester Display
        Deceleration Sensor Zero Point Clear

        Note

        When the deceleration sensor zero point is cleared, the system information stored in the engine stop and start ECU is also cleared. If the vehicle is driven for 5 seconds or more at 3 km/h (2 mph) or more in this condition, the engine stop and start ECU will store DTC P1589 and blink the stop and start cancel indicator light.

      7. Turn the engine switch off.

    2. Perform zero point calibration of the deceleration sensor.


      1. Check that the shift lever is in P.

      2. Connect the GTS to the DLC3.

      3. Check that the parking brake is applied and the brake warning light is illuminated.

      4. Turn the engine switch on (IG).

        Tech Tips

        Do not start the engine.

      5. Turn the GTS on.

      6. Enter the following menus: Powertrain / Stop and Start / Utility / Deceleration Sensor Zero Point Calibration.


        Powertrain > Stop and Start > Utility
        Tester Display
        Deceleration Sensor Zero Point Calibration

        Tech Tips

        If DTC P1589 is stored, the stop and start cancel indicator light will blink.

      7. While keeping the vehicle stationary, follow the prompts on the GTS screen. Check that "Complete" is displayed on the GTS screen.

        Note

        If zero point calibration fails, perform the registration procedure again from. (*1)

      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

  2. READ VALUE USING GTS (GRADIENT OF ROAD SURFACE)


    1. Enter the following menus: Powertrain / Stop and Start / Data List / Gradient of Road Surface.

    2. Check the road gradient displayed on the GTS.


      Powertrain > Stop and Start > Data List
      Tester Display Measurement Item Range Normal Condition
      Gradient of Road Surface Degree of road gradient -10.24 to 10.16 m/s2

      • -0.7 - 0.7 m/s2(Vehicle stopped on level surface)

      • -0.7 m/s2or less / 0.7 m/s2or more (Vehicle stopped on slope)

      Powertrain > Stop and Start > Data List
      Tester Display
      Gradient of Road Surface
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE AIRBAG ECU ASSEMBLY Click here

    OK

  3. CHECK AND REPLACE ENGINE STOP AND START ECU


    1. Check and replace the engine stop and start ECU.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. PERFORM REGISTRATION (DECELERATION SENSOR ZERO POINT CLEAR, DECELERATION SENSOR ZERO POINT CALIBRATION)

    Note


    • Once the zero point is stored, it cannot be overwritten until the data is cleared. Be sure to perform zero point clear and calibration after replacing the airbag ECU assembly.

    • Park the vehicle on a level surface (grade: +/-1%). Do not shake the vehicle or open/close any of the doors during zero point calibration. To avoid vibration caused by the engine idling, do not start the engine.


    1. Clear the zero point calibration data. (*1)


      1. Turn the engine switch off.

      2. Connect the GTS to the DLC3.

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

      4. Turn the engine switch on (IG).

        Tech Tips

        Do not start the engine.

      5. Turn the GTS on.

      6. Enter the following menus: Powertrain / Stop and Start / Utility / Deceleration Sensor Zero Point Clear.


        Powertrain > Stop and Start > Utility
        Tester Display
        Deceleration Sensor Zero Point Clear

        Note

        When the deceleration sensor zero point is cleared, the system information stored in the engine stop and start ECU is also cleared. If the vehicle is driven for 5 seconds or more at 3 km/h (2 mph) or more in this condition, the engine stop and start ECU will store DTC P1589 and blink the stop and start cancel indicator light.

      7. Turn the engine switch off.

    2. Perform zero point calibration of the deceleration sensor.


      1. Check that the shift lever is in P.

      2. Connect the GTS to the DLC3.

      3. Check that the parking brake is applied and the brake warning light is illuminated.

      4. Turn the engine switch on (IG).

        Tech Tips

        Do not start the engine.

      5. Turn the GTS on.

      6. Enter the following menus: Powertrain / Stop and Start / Utility / Deceleration Sensor Zero Point Calibration.


        Powertrain > Stop and Start > Utility
        Tester Display
        Deceleration Sensor Zero Point Calibration

        Tech Tips

        If DTC P1589 is stored, the stop and start cancel indicator light will blink.

      7. While keeping the vehicle stationary, follow the prompts on the GTS screen. Check that "Complete" is displayed on the GTS screen.

        Note

        If zero point calibration fails, perform the registration procedure again from. (*1)

      Result
      Proceed to
      NEXT

    NEXT

    END

  5. REPLACE AIRBAG ECU ASSEMBLY


    1. Replace the airbag ECU assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  6. PERFORM REGISTRATION (DECELERATION SENSOR ZERO POINT CLEAR, DECELERATION SENSOR ZERO POINT CALIBRATION)

    Note


    • Once the zero point is stored, it cannot be overwritten until the data is cleared. Be sure to perform zero point clear and calibration after replacing the airbag ECU assembly.

    • Park the vehicle on a level surface (grade: +/-1%). Do not shake the vehicle or open/close any of the doors during zero point calibration. To avoid vibration caused by the engine idling, do not start the engine.


    1. Clear the zero point calibration data. (*1)


      1. Turn the engine switch off.

      2. Connect the GTS to the DLC3.

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

      4. Turn the engine switch on (IG).

        Tech Tips

        Do not start the engine.

      5. Turn the GTS on.

      6. Enter the following menus: Powertrain / Stop and Start / Utility / Deceleration Sensor Zero Point Clear.


        Powertrain > Stop and Start > Utility
        Tester Display
        Deceleration Sensor Zero Point Clear

        Note

        When the deceleration sensor zero point is cleared, the system information stored in the engine stop and start ECU is also cleared. If the vehicle is driven for 5 seconds or more at 3 km/h (2 mph) or more in this condition, the engine stop and start ECU will store DTC P1589 and blink the stop and start cancel indicator light.

      7. Turn the engine switch off.

    2. Perform zero point calibration of the deceleration sensor.


      1. Check that the shift lever is in P.

      2. Connect the GTS to the DLC3.

      3. Check that the parking brake is applied and the brake warning light is illuminated.

      4. Turn the engine switch on (IG).

        Tech Tips

        Do not start the engine.

      5. Turn the GTS on.

      6. Enter the following menus: Powertrain / Stop and Start / Utility / Deceleration Sensor Zero Point Calibration.


        Powertrain > Stop and Start > Utility
        Tester Display
        Deceleration Sensor Zero Point Calibration

        Tech Tips

        If DTC P1589 is stored, the stop and start cancel indicator light will blink.

      7. While keeping the vehicle stationary, follow the prompts on the GTS screen. Check that "Complete" is displayed on the GTS screen.

        Note

        If zero point calibration fails, perform the registration procedure again from. (*1)

      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

    REPLACE ENGINE STOP AND START ECU Click here