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Home >> Toyota >> 2021 >> Prius Prime LE >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Plug-In Charge Control System - Circuit & System Tests >> Plug-In Charge Control System >> Symptom Tests >> Cannot Complete Charging by Scheduled Departure Time [09/2016 - ] >> Procedure
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Cannot Complete Charging by Scheduled Departure Time [09/2016 - ]: Procedure

  1. CHECK DTC OUTPUT (HEALTH CHECK) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Health Check.
    5. Check DTCs.

      Result

      Result Proceed to
      No DTCs are output A
      DTCs are output B
    6. Turn the power switch off.

    Result: 

    GO TO DTC CHART 

    Result: 

    See step  2

  2. CHECK FOR VEHICLE CONTROL HISTORY 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Plug-in Control / Utility / Vehicle Control History (RoB).

      Powertrain > Plug-in Control > Utility 

      Tester Display
      Vehicle Control History (RoB)
    4. Enter the following menus: Powertrain / Hybrid Control / Utility / Vehicle Control History (RoB).

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Vehicle Control History (RoB)
    5. Check for Vehicle Control History.

      Result

      Result Proceed to
      Vehicle Control History not stored A
      Vehicle Control History stored B
    6. Turn the power switch off.

    Result: 

    GO TO VEHICLE CONTROL HISTORY 

    Result: 

    See step  3

  3. SIMULATION TEST (SETTING CHARGE SCHEDULE) 
    NOTE:
    • Make sure to use a known good AC power source.
    • Use the same voltage that the customer used to plug-in charge the vehicle.

    HINT: 

    When using the departure time setting, if a full charging cannot be completed by the scheduled departure time, charging will start immediately. Also, when the scheduled departure time is reached, if full charging has not been completed, charging will continue. During reproduction testing, to allow for the time necessary to obtain a full charge, be sure to set a departure time that is sufficiently far into the future when compared to the current time.

    Setting the date (year/month/day) and time:

    1. Using the steering pad switches, set the following on the multi-information display.
      1. Time:

        Set the time through the "Clock Setting" display.

      2. Date (Year/Month/Day):

        Set the date (year/month/day) through the "Calendar" setting on the "Meter Customize" screen.

    Timer charging operates in accordance with the set date (year/month/day) and time of the multi-information display, not with the time of the navigation receiver assembly.

    1. The time of the multi-information display is not automatically adjusted for changes in time zone or daylight savings time.
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Health Check.
    5. Clear DTCs.
    6. Enter the following menus: Powertrain / Plug-in Control / Utility / Vehicle Control History (RoB).

      Powertrain > Plug-in Control > Utility 

      Tester Display
      Vehicle Control History (RoB)
    7. Clear all Vehicle Control History items.
    8. Enter the following menus: Powertrain / Hybrid Control / Utility / Vehicle Control History (RoB).

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Vehicle Control History (RoB)
    9. Clear all Vehicle Control History items.
    10. Enter the following menus: Powertrain / Hybrid Control / Data List / Hybrid/EV Battery SOC.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Hybrid/EV Battery SOC
    11. According to the display on the Techstream, read the Data List and confirm that the SOC of the HV battery is less than 70%.

      HINT: 

      If the SOC of the HV battery is 70% or more, drive the vehicle in EV mode to discharge the HV battery until the SOC becomes less than 70%.

    12. Check that the date and time displayed on the multi-information display are correct and adjust them if necessary.

      HINT: 

      As timer charging is performed based on the time, year, month and day of the multi-information display, make sure that they are set correctly.

    13. Using the multi-information display or navigation receiver assembly (for 11.6 inch display), set the charge schedule departure time.
    14. Turn the power switch off.
    15. Connect the electric vehicle charger cable assembly to the vehicle and charge the HV battery using the timer charging until the set departure time.
    16. Turn the power switch on (IG).
    17. Enter the following menus: Health Check.
    18. Check DTCs.
    19. Enter the following menus: Powertrain / Plug-in Control / Utility / Vehicle Control History (RoB).

      Powertrain > Plug-in Control > Utility 

      Tester Display
      Vehicle Control History (RoB)
    20. Enter the following menus: Powertrain / Hybrid Control / Utility / Vehicle Control History (RoB).

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Vehicle Control History (RoB)
    21. Check for Vehicle Control History.
    22. Turn the power switch off.
    23. Disconnect the electric vehicle charger cable assembly.

      Result

      Result Proceed to
      DTCs output A
      No DTCs output, Vehicle Control History stored B
      DTCs and Vehicle Control History not stored and charging did not complete by set departure time C
      DTCs and Vehicle Control History not stored and charging completed by set departure time D

    Result: 

    GO TO DTC CHART 

    Result: 

    GO TO VEHICLE CONTROL HISTORY 

    Result: 

    CAUSE ANALYSIS (VEHICLE RELATED CAUSE) 

    1. Analyze the cause according to the following table.
      VEHICLE RELATED CAUSE

      Possible Cause Action to be Taken
      Discharged auxiliary battery Inspect auxiliary battery
      Refer to ON-VEHICLE INSPECTION [09/2016 - 07/2020] , or refer to ON-VEHICLE INSPECTION [07/2020 - ]
      Accuracy of charging time remaining display Explain to the customer that the charging time remaining display should be used as a reference only and that discrepancies may occur due to factors such as the temperature of the HV battery during plug-in charging.
      Full charge was prioritized
      (if a departure time is set using charge schedule)
      Explain to the customer that if the air conditioning system operated before the scheduled departure time, the plug-in charging may be continued after the scheduled departure time.
    2. Take appropriate action in accordance with the result of the cause analysis.

    Result: 

    CAUSE ANALYSIS (USER / ENVIRONMENT RELATED CAUSE) 

    1. Perform cause analysis in the order of "User" and "Environment" categories as specified in the following tables.

      HINT: 

      As the departure time setting is designed to complete charging by the set departure time, charging will be performed in a manner to complete charging before the set time.

      USER RELATED CAUSE

      Possible Cause Action to be Taken
      Incorrect time, year, month or day set on multi-information display Explain to the customer that timer charging operates in accordance with the set date (year/month/day) and time of the multi-information display not with the time of the navigation receiver assembly.
      1. Explain to the customer that as the time on the multi-information display is not automatically adjusted for changes in time zone or daylight savings time, it is necessary to adjust the time manually.
      Charge schedule setting was wrong Interview customer and provide instruction on usage.
      Refer to PROBLEM SYMPTOMS TABLE [09/2016 - ]
      1. Refer to Owner's Manual.
      Climate Prep was set to ON Explain to the customer that if the Climate Prep is set to ON, the air conditioning system will operate until the set departure time. Therefore, depending on the power consumption of the air conditioning system, charging may not complete by the set departure time.
      Set departure time was too close to current time Explain to the customer that charging will start immediately if charging cannot be completed before the set departure time.
      Auxiliary power consumption was large due to use of accessories (headlights left on, etc.) Explain to the customer that if the auxiliary power consumption is high, the charging time will increase.
      Charge Mode was selected accidentally Interview customer and provide instruction on usage.
      Refer to PROBLEM SYMPTOMS TABLE [09/2016 - ]
      1. Explain to the customer that when Charge Mode is set to "Start", charging will begin at the set time and if it is set to "Departure", charging will complete by the set time.
      ENVIRONMENT RELATED CAUSE

      Possible Cause Action to be Taken
      Supplied power was low due to charging station AC voltage drop Interview customer and check the charging station.
      Refer to PROBLEM SYMPTOMS TABLE [09/2016 - ]
      1. Explain to the customer that plug-in charging may take longer than normal if the supplied AC voltage is low.
      Supplied power was low due charging station control Interview customer and check the charging station.
      Refer to PROBLEM SYMPTOMS TABLE [09/2016 - ]
      1. Plug-in charging may take longer than normal if the charging station has an electrical power management function. Refer to the user's Service Information for the charging station.
      Plug-in charging was suspended due to power outage Explain to the customer that plug-in charging is suspended when a power outage occurs and will resume when the power returns to normal.
      Charging power drops or estimated charging completion time changes due to ambient temperature or HV battery temperature Explain to the customer that if the temperature of the HV battery is changing, plug-in charging will take longer than normal.
      1. When the outside temperature is low, plug-in charging may take longer than normal due to the HV battery heater operation in order to ensure the EV driving distance.
      Power supply plug overheating protection function operated Explain to the customer that if an abnormally high temperature is detected on the power supply plug, the charging current may be reduced and the charging time will increase.
      1. Check if the electrical outlet is damaged or loose.
      Charge control power drops due to abnormal electrical outlet voltage Interview customer and check the electrical outlet.
      Refer to PROBLEM SYMPTOMS TABLE [09/2016 - ]
      1. An abnormality in the voltage of the electrical outlet or the ground wire connection may cause the electric vehicle charger cable assembly to restrict the charging current and thus cause charging time to increase. In this situation, the electrical outlet should be checked by a qualified electrician.
    2. Take appropriate action in accordance with the result of the cause analysis.