Toyota Yaris: Stop And Start System / Backup Boost Converter "A" Control CPU Signal Invalid (P060629)

HINT:

• If the cable is disconnected from the auxiliary 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 Auxiliary Battery Charge Control changes from "Refresh Charge Mode". (Usually, idling the engine for 5 to 60 minutes with the auxiliary 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 Auxiliary Battery Charge Control cannot be checked, charge the auxiliary 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 ignition 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.

NOTICE:

• 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.

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• After replacing the engine stop and start ECU, perform learning of the external backup boost converter (eco run vehicle converter assembly).

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• 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.

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• Inspect the fuses for circuits related to this system before performing the following procedure.

HINT:

• 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.

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• For wire harness and connector inspection procedures and precautions, refer to "Click here "
• 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.

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Brake Booster Pressure Sensor Circuit Short to Ground (P055511,P055515)

DESCRIPTION The engine stop and start ECU determines changes in the brake booster assembly pressure based on the voltage signal received from the vacuum sensor assembly in the brake booster assembly...

Analog to Digital Converter Circuit Voltage Out of Range (P060B1C,P060B49,P060B71)

DESCRIPTION If an internal malfunction occurs in the engine stop and start ECU, it stores P060B1C, P060B49 or P060B71 and blinks the stop and start cancel indicator...

Other information:

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Data List / Active Test

DATA LIST / ACTIVE TEST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. When diagnosing symptoms such as hesitation, rough idle, or other small symptoms using vehicle control history, compare data extracted from the same vehicle model in the same conditions and make sure to analyze all data in its entirety before making a diagnosis...

Toyota Yaris XP210 (2020-2024) Owner's Manual: Operating Tips for WMA

WMA is short for Windows Media Audio and is the audio compression format used by Microsoft. Audio data can be created and stored at a higher compression ratio than MP3. This unit plays files with the extension (.wma) as WMA files. *: Microsoft and Windows Media are registered trademarks of Microsoft Corporation U...