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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 62 (Hybrid Control System (AWD) - Diagnostic Codes (6 Of 6) & Circuit Tests (1 Of 2)) >> HYBRID CONTROL SYSTEM (for AWD) >> DTC P3000-4B: Hybrid/EV Battery Control System Over Temperature [12/2019 - 11/2023] >> Procedure

DTC P3000-4B: Hybrid/EV Battery Control System Over Temperature [12/2019 - 11/2023]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC OUTPUT (HYBRID CONTROL) 
    1. Check for DTCs.

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      P3000-4B only is output. A
      DTCs other than P3000-4B are also output. B
    2. Turn the ignition switch off.

    Result: 

    B 

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) 

    Refer to DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 09/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [09/2020 - 10/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [10/2021 - 11/2023]

    Result: 

    A 

    See step  2

  2. CLEAN NO. 2 HV BATTERY INTAKE FILTER 
    1. Check the HV battery cooling system intake port for blockage.

      HINT: 

      If anything is blocking the HV battery cooling system intake port, remove it.

      GTY852887Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a LH side
      *b RH side
      *c Intake Port
    2. Clean the No. 2 HV battery intake filter (LH side and RH side).

      Refer to INSPECTION [12/2019 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. CHECK FREEZE FRAME DATA (HYBRID CONTROL) 
    1. Read the Freeze Frame Data of DTC P3000-4B.

      Powertrain > Hybrid Control > Trouble Codes 

      NOTE:

      Although Freeze Frame Data is recorded before and after a DTC is stored, for this step it is only necessary to read the Freeze Frame Data recorded before "0s" (when the DTC was stored).

      GTY870564Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Freeze Frame Data Recorded
      *b DTC Stored
      *c Time

      Result

      Result Proceed to
      Other than below A
      The difference between the value of "VL-Voltage before Boosting" and the total of "Hybrid Battery Block 1 to 12 Voltage" is 10 V or more. B
    2. Turn the ignition switch off.

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  4

  4. CHECK FREEZE FRAME DATA (HYBRID CONTROL) 
    1. Read the Freeze Frame Data of DTC P3000-4B.
      NOTE:

      Although Freeze Frame Data is recorded before and after a DTC is stored, for this step it is only necessary to read the Freeze Frame Data recorded at "0s" (when the DTC was stored).

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      Other than below A
      The value of any of "Hybrid Battery Temperature 1 to 6" is 80°C (176°F) or more. B
    2. Turn the ignition switch off.

    Result: 

    B 

    See step  8

    Result: 

    A 

    See step  5

  5. READ VALUE USING GTS (DATA LIST) 
    1. According to the display on the GTS, read the Data List and check that the value of each "Hybrid Battery Temperature 1 to 6" is 40°C (104°F) or less.

      HINT: 

      If the value of any of "Hybrid Battery Temperature 1 to 6" is more than 40°C (104°F), turn the ignition switch off and wait until the values to decrease to 40°C (104°F) or less before continuing this procedure.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Hybrid Battery Temperature 1
      Hybrid Battery Temperature 2
      Hybrid Battery Temperature 3
      Hybrid Battery Temperature 4
      Hybrid Battery Temperature 5
      Hybrid Battery Temperature 6
    2. According to the display on the GTS, read the Data List and check the value of each "Hybrid Battery Block 1, 2, 11 and 12 Voltage" with the ignition switch ON.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Hybrid Battery Block 1 Voltage
      Hybrid Battery Block 2 Voltage
      Hybrid Battery Block 11 Voltage
      Hybrid Battery Block 12 Voltage
      GTY915715Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hybrid Battery Block 1 Voltage *b Hybrid Battery Block 2 Voltage
      *c Hybrid Battery Block 3 Voltage *d Hybrid Battery Block 4 Voltage
      *e Hybrid Battery Block 5 Voltage *f Hybrid Battery Block 6 Voltage
      *g Hybrid Battery Block 7 Voltage *h Hybrid Battery Block 8 Voltage
      *i Hybrid Battery Block 9 Voltage *j Hybrid Battery Block 10 Voltage
      *k Hybrid Battery Block 11 Voltage *l Hybrid Battery Block 12 Voltage

      Result

      Result Proceed to
      Other than below A
      The difference between the lowest and highest Hybrid Battery Block Voltage is 0.3 V or more. B
    3. Turn the ignition switch off.

    Result: 

    B 

    See step  8

    Result: 

    A 

    See step  6

  6. READ VALUE USING GTS (DATA LIST) 
    1. According to the display on the GTS, read the Data List and check that the value of each "Hybrid Battery Temperature 1 to 6" is 40°C (104°F) or less.

      HINT: 

      If the value of any of "Hybrid Battery Temperature 1 to 6" is more than 40°C (104°F), turn the ignition switch off and wait until the values to decrease to 40°C (104°F) or less before continuing this procedure.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Hybrid Battery Temperature 1
      Hybrid Battery Temperature 2
      Hybrid Battery Temperature 3
      Hybrid Battery Temperature 4
      Hybrid Battery Temperature 5
      Hybrid Battery Temperature 6
    2. According to the display on the GTS, read the Data List and check the value of each "Hybrid Battery Block 3 to 10 Voltage" with the ignition switch ON.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Hybrid Battery Block 3 Voltage
      Hybrid Battery Block 4 Voltage
      Hybrid Battery Block 5 Voltage
      Hybrid Battery Block 6 Voltage
      Hybrid Battery Block 7 Voltage
      Hybrid Battery Block 8 Voltage
      Hybrid Battery Block 9 Voltage
      Hybrid Battery Block 10 Voltage
      GTY924438Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hybrid Battery Block 1 Voltage *b Hybrid Battery Block 2 Voltage
      *c Hybrid Battery Block 3 Voltage *d Hybrid Battery Block 4 Voltage
      *e Hybrid Battery Block 5 Voltage *f Hybrid Battery Block 6 Voltage
      *g Hybrid Battery Block 7 Voltage *h Hybrid Battery Block 8 Voltage
      *i Hybrid Battery Block 9 Voltage *j Hybrid Battery Block 10 Voltage
      *k Hybrid Battery Block 11 Voltage *l Hybrid Battery Block 12 Voltage

      Result

      Result Proceed to
      Other than below A
      The difference between the lowest and highest Hybrid Battery Block Voltage is 0.3 V or more. B
    3. Turn the ignition switch off.

    Result: 

    A 

    END 

    Result: 

    B 

    See step  8

  7. REPLACE BATTERY VOLTAGE SENSOR 

    Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    REPLACE HV BATTERY 

    Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]

  8. REPLACE HYBRID VEHICLE CONTROL ECU 

    Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    REPLACE HV BATTERY 

    Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023]

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