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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Hybrid Battery Control System - Service Information (3 Of 3)) >> HV BATTERY STACK (for PHEV Model) >> Recovery Inspection [12/2023 - ] >> Procedure

Recovery Inspection [12/2023 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus TX 550h+ and 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT FOR ELECTROLYTE LEAK 
    WARNING:

    Be sure to wear insulated gloves and protective goggles.

    1. Inspect for electrolyte leaks after removing the HV supply stack sub-assembly.

      OK

      No leak was found on the lower part of the battery outer case.

      WARNING:
      • Perform this procedure in an area where the battery will not be exposed to fire.
      • Do not touch the HV supply stack sub-assembly, unless absolutely necessary, as electrolyte may be leaking.
      NOTE:

      If there is an electrolyte leak, make sure to wear insulated gloves and goggles and clean it using a piece of cloth. Do not leave electrolyte-contaminated cloths unattended. Dispose of them according to law or local regulations.

      Result

      Result
      OK
      NG

    Result: 

    NG 

    DISCHARGING 

    Result: 

    OK 

    See step  2

  2. CHECK FOR DTCS 
    1. Check the previously recorded DTCs which resulted in replacement of the HV supply stack sub-assembly.

      Result

      Result Proceed to
      DTC record not available. A
      The HV supply stack sub-assembly was replaced due to a reason other than the DTCs listed in the following table. B
      The HV supply stack sub-assembly was replaced due to one of the DTCs listed in the following table. C
      DTC No.
      P1A60-17
      P31AA-17
      P0C30-00
      P31B3-00
      P1C7D-49

    Result: 

    See step  5

    Result: 

    DISCHARGING 

    Result: 

    See step  3

  3. CHECK HV SUPPLY STACK SUB-ASSEMBLY VOLTAGE 
    WARNING:

    Be sure to wear insulated gloves and protective goggles.

    1. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      A - E Always Below 100.8 V
      B - F
      C - G
      D - H
      WARNING:

      Make sure not to cross the probes of the electrical tester.

      GTY999892Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 HV Supply Stack Sub-assembly *2 No. 2 HV Supply Stack Sub-assembly
      *3 No. 3 HV Supply Stack Sub-assembly *4 No. 4 HV Supply Stack Sub-assembly

      Result

      Result
      OK
      NG

    Result: 

    NG 

    DISCHARGING 

    Result: 

    OK 

    See step  4

  4. INSULATION INSPECTION OF HV SUPPLY STACK SUB-ASSEMBLY 
    WARNING:

    Be sure to wear insulated gloves and protective goggles.

    1. Using a megohmmeter set to 500 V, measure the insulation resistance according to the value(s) in the table below.
      NOTE:

      Be sure to set the megohmmeter to 500 V when performing this test. Using a setting higher than 500 V can result in damage to the component being inspected.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A - Insulation Inspection Area of the Bolt A Always 1 MΩ or higher
      B - Insulation Inspection Area of the Bolt B
      C - Insulation Inspection Area of the Bolt C
      D - Insulation Inspection Area of the Bolt D
      GTY999566Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Insulation Inspection Area - -

      Result

      Result
      OK
      NG

    Result: 

    NG 

    DISCHARGING 

    Result: 

    OK 

    See step  5

  5. HV SUPPLY STACK SUB-ASSEMBLY VISUAL CHECK 
    WARNING:

    Be sure to wear insulated gloves and protective goggles.

    1. Check that the HV supply stack sub-assembly is not deformed or damaged.

      OK

      The HV supply stack sub-assembly is not deformed or damaged.

      Result

      Result
      OK
      NG

    Result: 

    OK 

    RETURN HV SUPPLY STACK SUB-ASSEMBLY 

    Result: 

    NG 

    DISCHARGING