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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Hybrid Battery System - Diagnostic Codes (5 Of 5) & Symptom Tests) >> HYBRID BATTERY SYSTEM (for PHEV Model) >> "HAVE TRACTION BATTERY INSPECTED" is displayed [12/2023 - ] >> Procedure

"HAVE TRACTION BATTERY INSPECTED" is displayed [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. READ VALUE USING GTS 
    1. Enter the following menus: Powertrain / HV Battery / Data List / Hybrid/EV Battery Cell 1 to 96 Internal Resistance.

      Powertrain > HV Battery > Data List 

      Tester Display
      Hybrid/EV Battery Cell 1 Internal Resistance
      Hybrid/EV Battery Cell 2 Internal Resistance
      Hybrid/EV Battery Cell 3 Internal Resistance
      Hybrid/EV Battery Cell 4 Internal Resistance
      Hybrid/EV Battery Cell 5 Internal Resistance
      Hybrid/EV Battery Cell 6 Internal Resistance
      Hybrid/EV Battery Cell 7 Internal Resistance
      Hybrid/EV Battery Cell 8 Internal Resistance
      Hybrid/EV Battery Cell 9 Internal Resistance
      Hybrid/EV Battery Cell 10 Internal Resistance
      Hybrid/EV Battery Cell 11 Internal Resistance
      Hybrid/EV Battery Cell 12 Internal Resistance
      Hybrid/EV Battery Cell 13 Internal Resistance
      Hybrid/EV Battery Cell 14 Internal Resistance
      Hybrid/EV Battery Cell 15 Internal Resistance
      Hybrid/EV Battery Cell 16 Internal Resistance
      Hybrid/EV Battery Cell 17 Internal Resistance
      Hybrid/EV Battery Cell 18 Internal Resistance
      Hybrid/EV Battery Cell 19 Internal Resistance
      Hybrid/EV Battery Cell 20 Internal Resistance
      Hybrid/EV Battery Cell 21 Internal Resistance
      Hybrid/EV Battery Cell 22 Internal Resistance
      Hybrid/EV Battery Cell 23 Internal Resistance
      Hybrid/EV Battery Cell 24 Internal Resistance
      Hybrid/EV Battery Cell 25 Internal Resistance
      Hybrid/EV Battery Cell 26 Internal Resistance
      Hybrid/EV Battery Cell 27 Internal Resistance
      Hybrid/EV Battery Cell 28 Internal Resistance
      Hybrid/EV Battery Cell 29 Internal Resistance
      Hybrid/EV Battery Cell 30 Internal Resistance
      Hybrid/EV Battery Cell 31 Internal Resistance
      Hybrid/EV Battery Cell 32 Internal Resistance
      Hybrid/EV Battery Cell 33 Internal Resistance
      Hybrid/EV Battery Cell 34 Internal Resistance
      Hybrid/EV Battery Cell 35 Internal Resistance
      Hybrid/EV Battery Cell 36 Internal Resistance
      Hybrid/EV Battery Cell 37 Internal Resistance
      Hybrid/EV Battery Cell 38 Internal Resistance
      Hybrid/EV Battery Cell 39 Internal Resistance
      Hybrid/EV Battery Cell 40 Internal Resistance
      Hybrid/EV Battery Cell 41 Internal Resistance
      Hybrid/EV Battery Cell 42 Internal Resistance
      Hybrid/EV Battery Cell 43 Internal Resistance
      Hybrid/EV Battery Cell 44 Internal Resistance
      Hybrid/EV Battery Cell 45 Internal Resistance
      Hybrid/EV Battery Cell 46 Internal Resistance
      Hybrid/EV Battery Cell 47 Internal Resistance
      Hybrid/EV Battery Cell 48 Internal Resistance
      Hybrid/EV Battery Cell 49 Internal Resistance
      Hybrid/EV Battery Cell 50 Internal Resistance
      Hybrid/EV Battery Cell 51 Internal Resistance
      Hybrid/EV Battery Cell 52 Internal Resistance
      Hybrid/EV Battery Cell 53 Internal Resistance
      Hybrid/EV Battery Cell 54 Internal Resistance
      Hybrid/EV Battery Cell 55 Internal Resistance
      Hybrid/EV Battery Cell 56 Internal Resistance
      Hybrid/EV Battery Cell 57 Internal Resistance
      Hybrid/EV Battery Cell 58 Internal Resistance
      Hybrid/EV Battery Cell 59 Internal Resistance
      Hybrid/EV Battery Cell 60 Internal Resistance
      Hybrid/EV Battery Cell 61 Internal Resistance
      Hybrid/EV Battery Cell 62 Internal Resistance
      Hybrid/EV Battery Cell 63 Internal Resistance
      Hybrid/EV Battery Cell 64 Internal Resistance
      Hybrid/EV Battery Cell 65 Internal Resistance
      Hybrid/EV Battery Cell 66 Internal Resistance
      Hybrid/EV Battery Cell 67 Internal Resistance
      Hybrid/EV Battery Cell 68 Internal Resistance
      Hybrid/EV Battery Cell 69 Internal Resistance
      Hybrid/EV Battery Cell 70 Internal Resistance
      Hybrid/EV Battery Cell 71 Internal Resistance
      Hybrid/EV Battery Cell 72 Internal Resistance
      Hybrid/EV Battery Cell 73 Internal Resistance
      Hybrid/EV Battery Cell 74 Internal Resistance
      Hybrid/EV Battery Cell 75 Internal Resistance
      Hybrid/EV Battery Cell 76 Internal Resistance
      Hybrid/EV Battery Cell 77 Internal Resistance
      Hybrid/EV Battery Cell 78 Internal Resistance
      Hybrid/EV Battery Cell 79 Internal Resistance
      Hybrid/EV Battery Cell 80 Internal Resistance
      Hybrid/EV Battery Cell 81 Internal Resistance
      Hybrid/EV Battery Cell 82 Internal Resistance
      Hybrid/EV Battery Cell 83 Internal Resistance
      Hybrid/EV Battery Cell 84 Internal Resistance
      Hybrid/EV Battery Cell 85 Internal Resistance
      Hybrid/EV Battery Cell 86 Internal Resistance
      Hybrid/EV Battery Cell 87 Internal Resistance
      Hybrid/EV Battery Cell 88 Internal Resistance
      Hybrid/EV Battery Cell 89 Internal Resistance
      Hybrid/EV Battery Cell 90 Internal Resistance
      Hybrid/EV Battery Cell 91 Internal Resistance
      Hybrid/EV Battery Cell 92 Internal Resistance
      Hybrid/EV Battery Cell 93 Internal Resistance
      Hybrid/EV Battery Cell 94 Internal Resistance
      Hybrid/EV Battery Cell 95 Internal Resistance
      Hybrid/EV Battery Cell 96 Internal Resistance

      Result

      Result Proceed to
      "Hybrid/EV Battery Cell 1 to 24 Internal Resistance" is out of the specified range. A
      "Hybrid/EV Battery Cell 25 to 48 Internal Resistance" is out of the specified range. B
      "Hybrid/EV Battery Cell 49 to 72 Internal Resistance" is out of the specified range. C
      "Hybrid/EV Battery Cell 73 to 96 Internal Resistance" is out of the specified range. D
      All values are not within the specified range. E
    2. Turn the ignition switch off.

    Result: 

    A 

    REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

    Result: 

    B 

    REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

    Result: 

    C 

    REPLACE NO. 3 HV SUPPLY STACK SUB-ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

    Result: 

    D 

    REPLACE NO. 4 HV SUPPLY STACK SUB-ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

    Result: 

    E 

    See step  2

  2. DIAGNOSIS 
    1. Confirm with the owner whether or not to perform "Battery Diagnosis".

      HINT: 

      • Battery Diagnosis normally takes about 30 minutes to perform. If HV battery SOC learning has not been completed, Battery Diagnosis takes about 1 hour in addition to the time required to perform plug-in charging.
      • Depending on the vehicle usage, it is possible to reuse the HV supply stack sub-assembly. However, if it is judged not possible to be reused, replace the HV supply stack sub-assembly.

      Result

      Result Proceed to
      "Battery Diagnosis" is performed. A
      "Battery Diagnosis" is not performed. B

    Result: 

    B 

    REPLACE HV SUPPLY BATTERY ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

    Result: 

    A 

    See step  3

  3. PERFORM UTILITY (Battery Diagnosis) 
    1. Perform the "Battery Diagnosis".

      Refer to UTILITY [12/2023 - ]

      NOTE:
      • Do not perform battery diagnosis while the hybrid system light is illuminated.
      • Perform battery diagnosis with the HV battery installed correctly.
      • Do not perform battery diagnosis while changing from inspection mode to another mode.
      • Make sure to turn the ignition switch off after battery diagnosis to prevent the auxiliary battery from being discharged.
      • If the learning of SOC (state of charge) has not been performed, perform battery diagnosis after plug-in charging the vehicle as specified.

      HINT: 

      As the "Battery Diagnosis" discharges the HV battery to a low SOC, if the ignition switch is turned to ON immediately after the "Battery Diagnosis" is completed, DTC P31AB-16 (Hybrid Battery Cell Low Voltage) may be stored. For this reason, leave the vehicle as is for 1 hour to allow the HV battery SOC to recover.

    2. Check the battery diagnosis result.

      Result

      Result Proceed to
      Normal ("There is no need to replace HV supply battery assembly.") A
      Replace (Replace the listed HV supply stack sub-assemblies) B
      NOTE:
      • If "Maintenance Required for Traction Battery at Your Dealer" is displayed on the multi-information display, the message will not be cleared even after it is judged that "There is no need to replace battery". It can be cleared only after performing "Battery Status Info Update".
      • Perform "Battery Status Info Update" after replacing a HV supply stack sub-assembly of HV battery.

    Result: 

    B 

    REPLACE HV SUPPLY STACK SUB-ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

    Result: 

    A 

    See step  4

  4. PERFORM UTILITY (Battery Status Info Update) 
    1. Perform "Battery Status Info Update".

      Refer to UTILITY [12/2023 - ]

      NOTE:
      • Do not perform battery status info update while the hybrid system light is illuminated.
      • Perform battery status info update with the HV battery installed correctly.
      • If "Battery Status Info Update" is performed more than necessary, it may deteriorate the HV battery.
      • Make sure to perform "Battery Status Info Update" if the HV supply stack sub-assembly or HV supply battery assembly is replaced.
      • Make sure to turn the ignition switch off after battery status info update to prevent the auxiliary battery from being discharged.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    COMPLETED 

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