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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Electrical >> Starter >> Stop And Start System - Diagnostic Codes (1 Of 3) >> Stop And Start System >> DTC P0555-11: Brake Booster Pressure Sensor Circuit Short to Ground; DTC P0555-15: Brake Booster Pressure Sensor Circuit Short to Battery or Open [10/2022 - ] >> Confirmation Driving Pattern

Confirmation Driving Pattern

  1. CONFIRMATION AFTER TROUBLESHOOTING 

    HINT: 

    • If the cable is disconnected from the battery terminal, stop and start control is prohibited until refresh charge is completed.

      In this case, let the vehicle idle to complete the refresh charge. The refresh charge is complete when the Data List item Status of Battery Charge Control changes from "Refresh Charge Mode". (Usually, idling the engine for 5 to 60 minutes with the battery fluid temperature at 11°C (52°F) or higher, the refresh charge will be completed.)

    • If the GTS is not available and the Data List item Status of Battery Charge Control cannot be checked, charge the battery by idling the engine for approximately 5 to 60 minutes or driving the vehicle, and then drive the vehicle and check that stop and start control operates.

      If the engine is started with the hood open, the system determines that a jump start has occurred. Therefore, make sure that the hood is closed before starting the engine and driving the vehicle.

    • After the refresh charge completes, turn the engine switch off, wait for at least 30 seconds, and then start the engine again. If the vehicle enters refresh charge mode again while the engine is idling, the initial refresh charge did not properly complete, so wait for the refresh charge to complete.
    • 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.
    1. Connect the GTS to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the GTS on.
    4. Clear the DTCs.

      Powertrain > Stop and Start > Clear DTCs 

    5. Start the engine and allow it to idle for 15 seconds or more.
    6. Stop the engine and turn the ignition switch to ON.
    7. Turn the GTS on.
    8. Enter the following menus: Powertrain / Stop and Start / Data List / Brake Boost Pressure.

      Powertrain > Stop and Start > Data List 

      Tester Display
      Brake Boost Pressure
    9. While depressing the brake pedal several times, check that the Brake Boost Pressure value changes.
    10. Check that DTCs are not output.

      Powertrain > Stop and Start > Trouble Codes 

  2. STOP AND START SYSTEM OPERATION CHECK 

    Refer to OPERATION CHECK [12/2019 - ]

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