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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 Unlock Charging Connector [12/2023 - ] >> Procedure

Cannot Unlock Charging Connector [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 ELECTRIC VEHICLE CHARGER ASSEMBLY (WITH CHARGING PORT LID OPEN AND CHARGING CONNECTOR UNLOCKED) 
    WARNING:

    Be sure to wear insulated gloves.

    HINT: 

    Check that the "Connector Lock" setting is set to "Auto Lock".

    Refer to CUSTOMIZE PARAMETERS [12/2023 - ]

    1. Check that the service plug grip is not installed.
      NOTE:

      After removing the service plug grip, do not turn the ignition switch to ON (READY), unless instructed by the service information because this may cause a malfunction.

    2. Connect the cable to the negative (-) auxiliary battery terminal.
    3. Unlock of the doors.
    4. Open the charging port lid.
    5. Check that the charging connector lock is unlocked (lock pin is not extended).

      HINT: 

      If the charging connector lock is locked (the lock pin is extended), unlock it using the charging connector lock emergency release lever.

    6. Enter the following menus: Powertrain / Plug-in Control / Data List.

      Powertrain > Plug-in Control > Data List 

      Tester Display
      Charging Connector Connect Status Voltage
      Charging Connector Lock Pin Status
      Charging Connector Lock Motor Unlock Direction Revolution Request Current
      Charging Connector Lock Motor Lock Direction Revolution Request Current
    7. Connect the charging cable (electric vehicle charger cable assembly).

      HINT: 

      The connector lock is automatically engaged when the charging connector is connected.

    8. Unlock of the doors.
    9. Read the value displayed on the GTS.

      Powertrain > Plug-in Control > Data List 

      Tester Display Measurement Item Normal Condition
      Charging Connector Connect Status Voltage PISW terminal voltage used for checking electric vehicle charger cable assembly connection condition
      (PISW)      		 Charging cable (Electric vehicle charger cable assembly) connected: 0.35 to 2.02 V
      Charging cable (Electric vehicle charger cable assembly) connected and the latch release button (PI switch) engaged: 2.02 to 3.57 V
      Charging Connector Lock Pin Status Charging connector lock pin status
      (CBSW)      		 Charging connector lock pin not extended: Unlock
      Charging Connector Lock Motor Unlock Direction Revolution Request Current Output of current to operate charging connector lock motor in reverse
      (CBMN)      		 Charging connector lock motor not operated: OFF
      HINT: 
      After the doors are unlooked, it turns on for approximately 600 ms
      Charging Connector Lock Motor Lock Direction Revolution Request Current Output of current to operate charging connector lock motor forward
      (CBMP)      		 Charging connector lock motor not operated: OFF

      Result

      Result Proceed to
      OK A
      NG
      (CBSW)      		 B
      NG
      (CBMP, CBMN)      		 C
      NG
      (PISW)      		 D
    10. Turn the ignition switch off.
    11. Disconnect the charging cable (electric vehicle charger cable assembly).
    12. Close the charging port lid.
    13. Disconnect the cable from the negative (-) auxiliary battery terminal.

    Result: 

    B 

    See step  4

    Result: 

    C 

    See step  7

    Result: 

    D 

    See step  10

    Result: 

    A 

    See step  3

  3. INSPECT CABLE EV CHARGER LOCK ASSEMBLY 

    Refer to INSPECTION [12/2023 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    CAUSE ANALYSIS (USER / ENVIRONMENT RELATED CAUSE) 

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

      Possible Cause Action to be Taken
      Charging connector lock/unlock was operated repeatedly Explain to the customer that to protect the charging connector lock motor, if the charging connector lock/unlock was operated repeatedly, operation may be temporarily prohibited.
      Charging connector lock/unlock operation was attempted after auxiliary battery was replaced or cable disconnected and connected Explain to the customer that charging connector lock/unlock operation may be prohibited after the auxiliary battery has been replaced or the cable has been disconnected and reconnected to the negative (-) auxiliary battery terminal.
      1. Operate the charging connector lock/unlock again.
      Charging was completed with the "Connector Lock" setting in customize parameters set to "Auto Lock" Explain to the customer that the auto unlock function will not operate if the "Connector Lock" setting in customize parameters is not set to "Auto Lock & Unlock" when charging is complete.
      Refer to CUSTOMIZE PARAMETERS [12/2023 - ]
      ENVIRONMENT RELATED CAUSE

      Possible Cause Action to be Taken
      Charging connector lock motor temperature high Explain to the customer that, due to the temperature of the charging connector lock motor becoming high, to protect the charging connector lock motor, charging connector lock operation was prohibited.
      1. Wait 3 minutes or more after lock/unlock operation is prohibited, then resume inspection.
      Charging connector lock cannot operate due to foreign matter, ice, etc. Explain to the customer that the charging connector cannot be locked or unlocked if foreign matter, ice, etc. are stuck on the lock pin or charging connector.
    2. Take appropriate action in accordance with the result of the cause analysis.

    Result: 

    NG 

    REPLACE CABLE EV CHARGER LOCK ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

  4. CHECK ELECTRIC VEHICLE CHARGER ASSEMBLY (CBSW TERMINAL VOLTAGE) 

    See step  4

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    See step  6

    Result: 

    OK 

    See step  5

  5. INSPECT CABLE EV CHARGER LOCK ASSEMBLY (CHARGING CONNECTOR LOCK DETECTION SWITCH) 

    Refer to INSPECTION [12/2023 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    CAUSE ANALYSIS (USER / ENVIRONMENT RELATED CAUSE) 

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

      Possible Cause Action to be Taken
      Charging connector lock/unlock was operated repeatedly Explain to the customer that to protect the charging connector lock motor, if the charging connector lock/unlock was operated repeatedly, operation may be temporarily prohibited.
      Charging connector lock/unlock operation was attempted after auxiliary battery was replaced or cable disconnected and connected Explain to the customer that charging connector lock/unlock operation may be prohibited after the auxiliary battery has been replaced or the cable has been disconnected and reconnected to the negative (-) auxiliary battery terminal.
      1. Operate the charging connector lock/unlock again.
      Charging was completed with the "Connector Lock" setting in customize parameters set to "Auto Lock" Explain to the customer that the auto unlock function will not operate if the "Connector Lock" setting in customize parameters is not set to "Auto Lock & Unlock" when charging is complete.
      Refer to CUSTOMIZE PARAMETERS [12/2023 - ]
      ENVIRONMENT RELATED CAUSE

      Possible Cause Action to be Taken
      Charging connector lock motor temperature high Explain to the customer that, due to the temperature of the charging connector lock motor becoming high, to protect the charging connector lock motor, charging connector lock operation was prohibited.
      1. Wait 3 minutes or more after lock/unlock operation is prohibited, then resume inspection.
      Charging connector lock cannot operate due to foreign matter, ice, etc. Explain to the customer that the charging connector cannot be locked or unlocked if foreign matter, ice, etc. are stuck on the lock pin or charging connector.
    2. Take appropriate action in accordance with the result of the cause analysis.

    Result: 

    NG 

    REPLACE CABLE EV CHARGER LOCK ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

  6. CHECK HARNESS AND CONNECTOR (ELECTRIC VEHICLE CHARGER ASSEMBLY - CABLE EV CHARGER LOCK ASSEMBLY (CBSW)) 

    See step  6

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE ELECTRIC VEHICLE CHARGER ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  7. CHECK ELECTRIC VEHICLE CHARGER ASSEMBLY (CBMP, CBMN TERMINAL VOLTAGE) 

    See step  7

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    See step  9

    Result: 

    OK 

    See step  8

  8. INSPECT CABLE EV CHARGER LOCK ASSEMBLY (CHARGING CONNECTOR LOCK RELAY) 

    Refer to INSPECTION [12/2023 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    CAUSE ANALYSIS (USER / ENVIRONMENT RELATED CAUSE) 

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

      Possible Cause Action to be Taken
      Charging connector lock/unlock was operated repeatedly Explain to the customer that to protect the charging connector lock motor, if the charging connector lock/unlock was operated repeatedly, operation may be temporarily prohibited.
      Charging connector lock/unlock operation was attempted after auxiliary battery was replaced or cable disconnected and connected Explain to the customer that charging connector lock/unlock operation may be prohibited after the auxiliary battery has been replaced or the cable has been disconnected and reconnected to the negative (-) auxiliary battery terminal.
      1. Operate the charging connector lock/unlock again.
      Charging was completed with the "Connector Lock" setting in customize parameters set to "Auto Lock" Explain to the customer that the auto unlock function will not operate if the "Connector Lock" setting in customize parameters is not set to "Auto Lock & Unlock" when charging is complete.
      Refer to CUSTOMIZE PARAMETERS [12/2023 - ]
      ENVIRONMENT RELATED CAUSE

      Possible Cause Action to be Taken
      Charging connector lock motor temperature high Explain to the customer that, due to the temperature of the charging connector lock motor becoming high, to protect the charging connector lock motor, charging connector lock operation was prohibited.
      1. Wait 3 minutes or more after lock/unlock operation is prohibited, then resume inspection.
      Charging connector lock cannot operate due to foreign matter, ice, etc. Explain to the customer that the charging connector cannot be locked or unlocked if foreign matter, ice, etc. are stuck on the lock pin or charging connector.
    2. Take appropriate action in accordance with the result of the cause analysis.

    Result: 

    NG 

    REPLACE CABLE EV CHARGER LOCK ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

  9. CHECK HARNESS AND CONNECTOR (ELECTRIC VEHICLE CHARGER ASSEMBLY - CABLE EV CHARGER LOCK ASSEMBLY (CBMP, CBMN)) 

    See step  9

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE ELECTRIC VEHICLE CHARGER ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  10. CHECK ELECTRIC VEHICLE CHARGER ASSEMBLY (PISW TERMINAL VOLTAGE) 

    See step  10

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    See step  12

    Result: 

    OK 

    See step  11

  11. INSPECT CHARGING CABLE (ELECTRIC VEHICLE CHARGER CABLE ASSEMBLY) (PISW) 

    See step  11

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    CAUSE ANALYSIS (USER / ENVIRONMENT RELATED CAUSE) 

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

      Possible Cause Action to be Taken
      Charging connector lock/unlock was operated repeatedly Explain to the customer that to protect the charging connector lock motor, if the charging connector lock/unlock was operated repeatedly, operation may be temporarily prohibited.
      Charging connector lock/unlock operation was attempted after auxiliary battery was replaced or cable disconnected and connected Explain to the customer that charging connector lock/unlock operation may be prohibited after the auxiliary battery has been replaced or the cable has been disconnected and reconnected to the negative (-) auxiliary battery terminal.
      1. Operate the charging connector lock/unlock again.
      Charging was completed with the "Connector Lock" setting in customize parameters set to "Auto Lock" Explain to the customer that the auto unlock function will not operate if the "Connector Lock" setting in customize parameters is not set to "Auto Lock & Unlock" when charging is complete.
      Refer to CUSTOMIZE PARAMETERS [12/2023 - ]
      ENVIRONMENT RELATED CAUSE

      Possible Cause Action to be Taken
      Charging connector lock motor temperature high Explain to the customer that, due to the temperature of the charging connector lock motor becoming high, to protect the charging connector lock motor, charging connector lock operation was prohibited.
      1. Wait 3 minutes or more after lock/unlock operation is prohibited, then resume inspection.
      Charging connector lock cannot operate due to foreign matter, ice, etc. Explain to the customer that the charging connector cannot be locked or unlocked if foreign matter, ice, etc. are stuck on the lock pin or charging connector.
    2. Take appropriate action in accordance with the result of the cause analysis.

    Result: 

    NG 

    REPLACE CHARGING CABLE (ELECTRIC VEHICLE CHARGER CABLE ASSEMBLY) 

  12. CHECK HARNESS AND CONNECTOR (ELECTRIC VEHICLE CHARGER ASSEMBLY - CHARGING INLET) 

    See step  12

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE ELECTRIC VEHICLE CHARGER ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

    Result: 

    NG 

    See step  13

  13. CHECK AC CHARGER INLET CABLE (BODY GROUND TERMINAL CONNECTION CONDITION) 

    See step  13

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    CONNECT SECURELY 

    Result: 

    OK 

    See step  14

  14. CHECK AC CHARGER INLET CABLE 

    See step  14

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    NG 

    REPLACE AC CHARGER INLET CABLE. Refer to  REMOVAL [12/2023 - ] 

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