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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 107 (Hybrid Control System (2WD) - Diagnostic Codes (4 Of 7)) >> HYBRID CONTROL SYSTEM (for 2WD) >> DTC P0B3B-14: Hybrid/EV Battery Voltage Sensor "A" Circuit Short to Ground or Open; DTC P0B40-14: Hybrid/EV Battery Voltage Sensor "B" Circuit Short to Ground or Open; DTC P0B45-14: Hybrid/EV Battery Voltage Sensor "C" Circuit Short to Ground or Open; DTC P0B4A-14: Hybrid/EV Battery Voltage Sensor "D" Circuit Short to Ground or Open; DTC P0B4F-14: Hybrid/EV Battery Voltage Sensor "E" Circuit Short to Ground or Open; DTC P0B54-14: Hybrid/EV Battery Voltage Sensor "F" Circuit Short to Ground or Open; DTC P0B59-14: Hybrid/EV Battery Voltage Sensor "G" Circuit Short to Ground or Open; DTC P0B5E-14: Hybrid/EV Battery Voltage Sensor "H" Circuit Short to Ground or Open; DTC P0B63-14: Hybrid/EV Battery Voltage Sensor "I" Circuit Short to Ground or Open; DTC P0B68-14: Hybrid/EV Battery Voltage Sensor "J" Circuit Short to Ground or Open; DTC P0B6D-14: Hybrid/EV Battery Voltage Sensor "K" Circuit Short to Ground or Open; DTC P0B72-14: Hybrid/EV Battery Voltage Sensor "L" Circuit Short to Ground or Open; DTC P0B77-14: Hybrid/EV Battery Voltage Sensor "M" Circuit Short to Ground or Open; DTC P308A-13: Hybrid/EV Battery Voltage Sensor All Circuit Open [12/2019 - 11/2023] >> Procedure

DTC P0B3B-14: Hybrid/EV Battery Voltage Sensor "A" Circuit Short to Ground or Open; DTC P0B40-14: Hybrid/EV Battery Voltage Sensor "B" Circuit Short to Ground or Open; DTC P0B45-14: Hybrid/EV Battery Voltage Sensor "C" Circuit Short to Ground or Open; DTC P0B4A-14: Hybrid/EV Battery Voltage Sensor "D" Circuit Short to Ground or Open; DTC P0B4F-14: Hybrid/EV Battery Voltage Sensor "E" Circuit Short to Ground or Open; DTC P0B54-14: Hybrid/EV Battery Voltage Sensor "F" Circuit Short to Ground or Open; DTC P0B59-14: Hybrid/EV Battery Voltage Sensor "G" Circuit Short to Ground or Open; DTC P0B5E-14: Hybrid/EV Battery Voltage Sensor "H" Circuit Short to Ground or Open; DTC P0B63-14: Hybrid/EV Battery Voltage Sensor "I" Circuit Short to Ground or Open; DTC P0B68-14: Hybrid/EV Battery Voltage Sensor "J" Circuit Short to Ground or Open; DTC P0B6D-14: Hybrid/EV Battery Voltage Sensor "K" Circuit Short to Ground or Open; DTC P0B72-14: Hybrid/EV Battery Voltage Sensor "L" Circuit Short to Ground or Open; DTC P0B77-14: Hybrid/EV Battery Voltage Sensor "M" Circuit Short to Ground or Open; DTC P308A-13: Hybrid/EV Battery Voltage Sensor All Circuit Open [12/2019 - 11/2023]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC OUTPUT (HYBRID CONTROL) 
    1. Check and record any HV system DTCs and Freeze Frame Data.

      Powertrain > Hybrid Control > Trouble Codes 

      Result

      Result Proceed to
      P0A95-63, P0AFC-00, P0AFC-96 or P308A-12 is not output. A
      P0A95-63, P0AFC-00, P0AFC-96 or P308A-12 is 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. CHECK CONNECTOR CONNECTION CONDITION (BATTERY VOLTAGE SENSOR CONNECTOR) 

    See step  1

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    CONNECT SECURELY 

    Result: 

    OK 

    See step  3

  3. CHECK DTC OUTPUT (HYBRID CONTROL) 
    1. Check for DTCs.

      Powertrain > Hybrid Control > Trouble Codes 

      HINT: 

      Check the DTCs that were output when the vehicle was brought to the workshop.

      Result

      Result  Proceed to
      DTCs other than P308A-13 are also output. A
      P308A-13 is output B
    2. Turn the ignition switch off.

    Result: 

    B 

    See step  5

    Result: 

    A 

    See step  4

  4. CHECK BATTERY VOLTAGE SENSOR (BLOCK VOLTAGES) 
    WARNING:

    Be sure to wear insulated gloves.

    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 repair information because this may cause a malfunction.

    2. Disconnect the high voltage cable connector of the HV battery from the HV battery junction block assembly.
      NOTE:

      Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.

    3. Disconnect the z15 battery voltage sensor connector.
    4. Measure the voltage according to the value(s) in the table below.

      HINT: 

      For each output DTC, apply the judgment method in the table below and calculate the voltage value.

      GTY914232Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Service Plug Grip Removed
      (Service Plug Grip Connecting Terminals)

      Standard Voltage

      DTC No. Judgment Method Specified Condition
      P0B77-14 [A] = [C] 288 to 336 V
      P0B72-14 [D] 14.4 to 16.8 V
      P0B6D-14 [E] - [D] 14.4 to 16.8 V
      P0B68-14 [F] - [E] 28.8 to 33.6 V
      P0B63-14 [G] - [F] 28.8 to 33.6 V
      P0B5E-14 [H] - [G] 28.8 to 33.6 V
      P0B59-14 [I] - [J] 28.8 to 33.6 V
      P0B54-14 [J] - [K] 28.8 to 33.6 V
      P0B4F-14 [K] - [L] 28.8 to 33.6 V
      P0B4A-14 [L] - [M] 28.8 to 33.6 V
      P0B45-14 [M] - [N] 14.4 to 16.8 V
      P0B40-14 [N] 14.4 to 16.8 V
      P0B3B-14 [A] = [B] 288 to 336 V
      Tester Connection Condition Specified Condition
      z11-1 (+) (+) - Service plug grip connecting terminals 1 (-) Ignition switch off [A]
      z11-1 (+) (+) - z15-22 (GB0) (-) Ignition switch off [B]
      z15-12 (VB20) (+) - Service plug grip connecting terminals 1 (-) Ignition switch off [C]
      z11-1 (+) (+) - z15-2 (VB19) (-) Ignition switch off [D]
      z11-1 (+) (+) - z15-13 (VB18) (-) Ignition switch off [E]
      z11-1 (+) (+) - z15-14 (VB16) (-) Ignition switch off [F]
      z11-1 (+) (+) - z15-15 (VB14) (-) Ignition switch off [G]
      z11-1 (+) (+) - z15-16 (VB12) (-) Ignition switch off [H]
      z15-17 (VB10) (+) - Service plug grip connecting terminals 1 (-) Ignition switch off [I]
      z15-18 (VB8) (+) - Service plug grip connecting terminals 1 (-) Ignition switch off [J]
      z15-19 (VB6) (+) - Service plug grip connecting terminals 1 (-) Ignition switch off [K]
      z15-20 (VB4) (+) - Service plug grip connecting terminals 1 (-) Ignition switch off [L]
      z15-21 (VB2) (+) - Service plug grip connecting terminals 1 (-) Ignition switch off [M]
      z15-11 (VB1) (+) - Service plug grip connecting terminals 1 (-) Ignition switch off [N]
      WARNING:

      Make sure not to cross the electrodes of an electrical tester measurement terminals.

      GTY1103338Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.

      Result

      Proceed to
      OK
      NG
    5. Disconnect the z15 battery voltage sensor connector.
    6. Reconnect the HV battery high voltage cable connectors.

    Result: 

    OK 

    REPLACE BATTERY VOLTAGE SENSOR 

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

    Result: 

    NG 

    REPLACE HV BATTERY 

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

  5. CHECK BATTERY VOLTAGE SENSOR (BLOCK VOLTAGES) 
    WARNING:

    Be sure to wear insulated gloves.

    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 repair information because this may cause a malfunction.

    2. Disconnect the high voltage cable connector of the HV battery from the HV battery junction block assembly.
      NOTE:

      Insulate each disconnected high-voltage connector with insulating tape. Wrap the connector from the wire harness side to the end of the connector.

    3. Disconnect the z15 battery voltage sensor connector.
    4. Measure the voltage according to the value(s) in the table below.

      HINT: 

      Apply the judgment method in the table below and calculate the voltage value.

      GTY914232Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Service Plug Grip Removed
      (Service Plug Grip Connecting Terminals)

      Standard Voltage

      DTC No. Judgment Method Specified Condition
      P308A-13 [C] - [D] 28.8 to 33.6 V
      [D] - [E] 14.4 to 16.8 V
      [E] 14.4 to 16.8 V
      [A] = [B] 288 to 336 V
      Tester Connection Condition Specified Condition
      z11-1 (+) (+) - Service plug grip connecting terminals 1 (-) Ignition switch off [A]
      z11-1 (+) (+) - z15-22 (GB0) (-) Ignition switch off [B]
      z15-20 (VB4) (+) - Service plug grip connecting terminals 1 (-) Ignition switch off [C]
      z15-21 (VB2) (+) - Service plug grip connecting terminals 1 (-) Ignition switch off [D]
      z15-11 (VB1) (+) - Service plug grip connecting terminals 1 (-) Ignition switch off [E]
      WARNING:

      Make sure not to cross the electrodes of an electrical tester measurement terminals.

      GTY1103338Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Make sure to check the polarity of each terminal (positive (+) or negative (-)) before connecting a tester.

      Result

      Proceed to
      OK
      NG
    5. Disconnect the z15 battery voltage sensor connector.
    6. Reconnect the HV battery high voltage cable connectors.

    Result: 

    OK 

    REPLACE BATTERY VOLTAGE SENSOR 

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

    Result: 

    NG 

    REPLACE HV BATTERY 

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

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