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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 71 (Plug-In Charge Control System - Diagnostic Codes (3 Of 3) & Symptom Tests) >> PLUG-IN CHARGE CONTROL SYSTEM (for PHEV Model) >> Cannot Complete Charging by Scheduled Departure Time [12/2023 - ] >> Procedure

Cannot Complete Charging by Scheduled Departure Time [12/2023 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC OUTPUT (HEALTH CHECK) 
    1. Enter the following menus: Health Check.
    2. Check DTCs.

      Result

      Result Proceed to
      No DTCs are output A
      DTCs are output B
    3. Turn the ignition switch off.

    Result: 

    B 

    GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2023 - ] 

    Result: 

    A 

    See step  2

  2. CHECK FOR VEHICLE CONTROL HISTORY (ROB) 
    1. Check for Vehicle Control History (RoB).

      Powertrain > Plug-in Control > Utility 

      Tester Display
      Vehicle Control History (RoB)

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Vehicle Control History (RoB)

      Result

      Result Proceed to
      Vehicle Control History (RoB) not stored A
      Vehicle Control History (RoB) stored B
    2. Turn the ignition switch off.

    Result: 

    B 

    GO TO VEHICLE CONTROL HISTORY (ROB) 

    Result: 

    A 

    See step  3

  3. SIMULATION TEST (SETTING CHARGE SCHEDULE) 
    NOTE:
    • Make sure to use a known good AC power source.
    • Use the same power 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. The current date and time displayed on the radio and display receiver assembly is automatically set using GPS. However, if automatic setting of the date and time is set to off in the radio and display receiver assembly settings, the date and time must be set manually.

    Timer charging operates in accordance with the set date (year/month/day) and time of the radio and display receiver assembly.

    1. Enter the following menus: Health Check.
    2. Clear DTCs.
    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. Clear all Vehicle Control History (RoB) items.
    5. Enter the following menus: Powertrain / Hybrid Control / Utility / Vehicle Control History (RoB).

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Vehicle Control History (RoB)
    6. Clear all Vehicle Control History (RoB) items.
    7. According to the display on the GTS, 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%.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Hybrid/EV Battery SOC
    8. Check that the date and time displayed on the radio and display receiver assembly are correct and adjust them if necessary.

      HINT: 

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

    9. Using the radio and display receiver assembly, set the charge schedule departure time.
    10. Turn the ignition switch off.
    11. Connect the charging cable (electric vehicle charger cable assembly) to the vehicle and charge the HV battery using the timer charging until the set departure time.
    12. Turn the ignition switch to ON.
    13. Enter the following menus: Health Check.
    14. Check DTCs.
    15. Check for Vehicle Control History (RoB).

      Powertrain > Plug-in Control > Utility 

      Tester Display
      Vehicle Control History (RoB)

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Vehicle Control History (RoB)

      Result

      Result Proceed to
      DTCs output A
      No DTCs output, Vehicle Control History (RoB) stored B
      DTCs and Vehicle Control History (RoB) not stored and charging did not complete by set departure time C
      DTCs and Vehicle Control History (RoB) not stored and charging completed by set departure time D
    16. Turn the ignition switch off.
    17. Disconnect the charging cable (electric vehicle charger cable assembly).

    Result: 

    A 

    GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2023 - ] 

    Result: 

    B 

    GO TO VEHICLE CONTROL HISTORY (ROB) 

    Result: 

    C 

    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 [12/2023 - ]
      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.
    2. Take appropriate action in accordance with the result of the cause analysis.

    Result: 

    D 

    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 the charge schedule operates according to the time and date (day of week) set in the vehicle.
      1. Explain to the customer that as the time and date are set using the GPS function of the radio and display receiver assembly. Therefore, turn the GPS ON.
      Charge schedule setting was wrong Interview customer and provide instruction on usage.
      Refer to PROBLEM SYMPTOMS TABLE [12/2023 - ]
      1. Refer to Owner's Manual.
      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, plug-in charging will take longer than normal.
      Charge Mode was selected accidentally Interview customer and provide instruction on usage.
      Refer to PROBLEM SYMPTOMS TABLE [12/2023 - ]
      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 [12/2023 - ]
      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 [12/2023 - ]
      1. Plug-in charging may take longer than normal if the charging station has an electrical power management function. Refer to the user's manual 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 Interview customer and check the electrical outlet.
      Refer to PROBLEM SYMPTOMS TABLE [12/2023 - ]
      1. 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 [12/2023 - ]
      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.
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