HYBRID BATTERY SYSTEM, Diagnostic DTC:P0A9B2A, P0AC52A, P0ACA2A, P0AE82A, P0BC22A, P0C332A, P306562, P306A62

DTC Code DTC Name
P0A9B2A Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range
P0AC52A Hybrid/EV Battery Temperature Sensor "B" Signal Stuck In Range
P0ACA2A Hybrid/EV Battery Temperature Sensor "C" Signal Stuck In Range
P0AE82A Hybrid/EV Battery Temperature Sensor "D" Signal Stuck In Range
P0BC22A Hybrid/EV Battery Temperature Sensor "E" Signal Stuck In Range
P0C332A Hybrid/EV Battery Temperature Sensor "F" Signal Stuck In Range
P306562 Hybrid/EV Battery Temperature Sensor "Group 1" Signal Compare Failure
P306A62 Hybrid/EV Battery Temperature Sensor "Group 2" Signal Compare Failure

DESCRIPTION

Refer to the description for DTC P0A9B11.

Click here

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0A9B2A Hybrid/EV Battery Temperature Sensor "A" Signal Stuck In Range

The performance of battery temperature sensor 0 is abnormal and its output is stuck.

(2 trip detection logic)

  • No. 1 HV supply stack sub-assembly

  • Battery ECU assembly

  • Wire harness or connector

 Comes on

Master Warning Light:

Comes on
P0AC52A Hybrid/EV Battery Temperature Sensor "B" Signal Stuck In Range

The performance of battery temperature sensor 1 is abnormal and its output is stuck.

(2 trip detection logic)

  • No. 1 HV supply stack sub-assembly

  • Battery ECU assembly

  • Wire harness or connector

 Comes on

Master Warning Light:

Comes on
P0ACA2A Hybrid/EV Battery Temperature Sensor "C" Signal Stuck In Range

The performance of battery temperature sensor 2 is abnormal and its output is stuck.

(2 trip detection logic)

  • No. 1 HV supply stack sub-assembly

  • Battery ECU assembly

  • Wire harness or connector

 Comes on

Master Warning Light:

Comes on
P0AE82A Hybrid/EV Battery Temperature Sensor "D" Signal Stuck In Range

The performance of battery temperature sensor 3 is abnormal and its output is stuck.

(2 trip detection logic)

  • No. 2 HV supply stack sub-assembly

  • Battery ECU assembly

  • Wire harness or connector

 Comes on

Master Warning Light:

Comes on
P0BC22A Hybrid/EV Battery Temperature Sensor "E" Signal Stuck In Range

The performance of battery temperature sensor 4 is abnormal and its output is stuck.

(2 trip detection logic)

  • No. 2 HV supply stack sub-assembly

  • Battery ECU assembly

  • Wire harness or connector

 Comes on

Master Warning Light:

Comes on
P0C332A Hybrid/EV Battery Temperature Sensor "F" Signal Stuck In Range

The performance of battery temperature sensor 5 is abnormal and its output is stuck.

(2 trip detection logic)

  • No. 2 HV supply stack sub-assembly

  • Battery ECU assembly

  • Wire harness or connector

 Comes on

Master Warning Light:

Comes on
P306562 Hybrid/EV Battery Temperature Sensor "Group 1" Signal Compare Failure

The performance of any battery temperature sensor (0 to 2) is abnormal and the difference in output between it and each other battery temperature sensor is excessively large.

(1 trip detection logic)

  • No. 1 HV supply stack sub-assembly

  • Battery ECU assembly

  • Wire harness or connector

 Comes on

Master Warning Light:

Comes on
P306A62 Hybrid/EV Battery Temperature Sensor "Group 2" Signal Compare Failure

The performance of any battery temperature sensor (3 to 5) is abnormal and the difference in output between it and each other battery temperature sensor is excessively large.

(1 trip detection logic)

  • No. 2 HV supply stack sub-assembly

  • Battery ECU assembly

  • Wire harness or connector

 Comes on

Master Warning Light:

Comes on
Related Data List
DTC No. Data List
P0A9B2A Hybrid Battery Temperature 1 to 6
P0AC52A
P0ACA2A
P0AE82A
P0BC22A
P0C332A
P306562
P306A62

Tech Tips

If the vehicle as is left as is for 24 hours, the value of "Hybrid Battery Temperature" will be almost the same as the ambient temperature.

The following items can be helpful when performing repairs:


CONFIRMATION DRIVING PATTERN

Tech Tips

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click here

P0A9B2A, P0AC52A, P0ACA2A, P0AE82A, P0BC22A, P0C332A:


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off and wait for 2 minutes or more.

  5. Turn the power switch on (IG) and turn the GTS on.

  6. Drive the vehicle for approximately 10 minutes according to the freeze frame data items "Vehicle Speed", "Accelerator Position", "Hybrid Battery Temperature 1 to 6" and "Hybrid Battery Current" when ambient temperature is -10°C (14°F) or higher.

    Tech Tips


    • Check that the output of each battery temperature sensor varies.

    • Check that the difference in output between each battery temperature sensor is not excessively large.

  7. Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.

  8. Check the DTC judgment result.

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.

P306562, P306A62:


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off and wait for 2 minutes or more.

  5. Turn the power switch on (IG) and turn the GTS on.

  6. With power switch on (IG) and wait for 10 seconds or more when the ambient temperature is -10°C (14°F) or higher.

    Tech Tips

    Check that the difference in output between each battery temperature sensor is not excessively large.

  7. Enter the following menus: Powertrain / HV Battery / Utility / All Readiness.

  8. Check the DTC judgment result.

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.

WIRING DIAGRAM

B004B5EE01

CAUTION / NOTICE / HINT

CAUTION:


  • B004BJX

    Before the following operations are conducted, take precautions to prevent electric shock by turning the power switch off, wearing insulated gloves, and removing the service plug grip from HV battery.


    • Inspecting the high-voltage system

    • Disconnecting the low voltage connector of the inverter with converter assembly

    • Disconnecting the low voltage connector of the HV battery

  • B004C5R

    To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.

  • B0049VM

    After removing the service plug grip from the HV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.

  • B004AZGC06
    *a Without waiting for 10 minutes

    After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.

    Click here

    Tech Tips

    Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly and the electric vehicle charger assembly.

  • B004AA2C06
    *a Dealer
    *b Battery Collection Agent

    When disposing of an HV battery, make sure to return it through an authorized collection agent who is capable of handling it safely. If the HV battery is returned via the manufacturer specified route, it will be returned properly and in a safe manner by an authorized collection agent.


    • Accidents such as electric shock may result if the HV battery is disposed of improperly or abandoned. Therefore, make sure to return all HV batteries through an authorized collection agent.

  • Before returning the HV battery, make sure to perform a recovery inspection.

    Click here

  • Before returning the HV supply stack sub-assembly, make sure to perform a recovery inspection.

    Click here

  • Make a note of the output DTCs as some of them may be necessary for recovery inspection of the HV battery and HV supply stack sub-assemblies.

  • B004CBE

    After removing the HV battery, keep it away from water. Exposure to water may cause the HV battery to produce heat, resulting in a fire.

Note

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

Click here

PROCEDURE


  1. CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / HV Battery and Hybrid Control / Trouble Codes.

    4. Check for DTCs.


      Powertrain > HV Battery > Trouble Codes
      Powertrain > Hybrid Control > Trouble Codes
      Result
      Result Proceed to
      "P0A9B2A, P0AC52A, P0ACA2A, P0AE82A, P0BC22A, P0C332A, P306562 or P306A62" only is output, or DTCs except the ones in the table below are also output. A
      DTCs of hybrid battery system in the table below are output. B
      DTCs of hybrid control system in the table below are output. C
      System Relevant DTC
      Hybrid battery system P060A47 Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure
      P060B49 Hybrid/EV Battery Energy Control Module A/D Processing Internal Electronic Failure
      P060687 Hybrid/EV Battery Energy Control Module Processor to Monitoring Processor Missing Message
      Hybrid control system P0A1F94 Hybrid/EV Battery Energy Control Module Unexpected Operation

    5. Turn the power switch off.


    B

    GO TO DTC CHART (HYBRID BATTERY SYSTEM) Click here

    C

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here

    A

  2. CHECK DTC


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

      Result
      Result Proceed to
      "P0A9B2A, P0AC52A, P0ACA2A or P306562" is also output. A
      "P0AE82A, P0BC22A, P0C332A or P306A62" is also output. B

    B

    CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR 3 to 5) Click here

    A

  3. CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR 0 to 2)

    Result
    Proceed to
    OK
    NG

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


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

      Note

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the upper No. 1 hybrid battery cover sub-assembly.

      Click here

    3. B004AUFE01

      Disconnect the z31 battery ECU assembly connector.

      Note

      Before disconnecting the connector, check that it is not loose or disconnected.

    4. B004B3CC09
      *a

      Rear view of wire harness connector

      (to Battery ECU Assembly)

      Measure the resistance of the circuit for the malfunctioning sensor (battery temperature sensor 0 to 2).

      Tester Connection
      Tester Connection Battery Temperature Sensor
      z31-6(TB0) - z31-26(GB0) 0
      z31-25(TB1) - z31-5(GB1) 1
      z31-4(TB2) - z31-24(GB2) 2
      Standard Resistance
      Thermistor Temperature Condition Specified Condition
      20 to 30°C (68 to 86°F) Always 8.22 to 12.2 kΩ
      30 to 40°C (86 to 104°F) Always 5.74 to 8.41 kΩ
      40 to 50°C (104 to 122°F) Always 4.09 to 5.91 kΩ

    5. Measure the resistance according to the value (s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      z31-6 (TB0) - Body ground and other terminals (except z31-26 (GB0)) Always 10 kΩ or higher
      z31-26 (GB0) - Body ground and other terminals (except z31-6 (TB0)) Always 10 kΩ or higher
      z31-25 (TB1) - Body ground and other terminals (except z31-5 (GB1)) Always 10 kΩ or higher
      z31-5 (GB1) - Body ground and other terminals (except z31-25 (TB1)) Always 10 kΩ or higher
      z31-4 (TB2) - Body ground and other terminals (except z31-24 (GB2)) Always 10 kΩ or higher
      z31-24 (GB2) - Body ground and other terminals (except z31-4 (TB2)) Always 10 kΩ or higher

    6. Reconnect the z31 battery ECU assembly connector.

    7. Install the upper No. 1 hybrid battery cover sub-assembly.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BATTERY ECU ASSEMBLY Click here

    NG

  4. CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 1 HV SUPPLY STACK SUB-ASSEMBLY)

    Result
    Proceed to
    OK
    NG

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


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

      Note

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the upper No. 1 hybrid battery cover sub-assembly.

      Click here

    3. B004AUFE01

      Disconnect the z31 battery ECU assembly connector.

      Note

      Before disconnecting the connector, check that it is not loose or disconnected.

    4. B0049SJE01

      Disconnect the A No. 1 HV supply stack sub-assembly connector.

      Note

      Before disconnecting the connector, check that it is not loose or disconnected.

    5. B004C76C03
      *a

      Rear view of wire harness connector

      (to Battery ECU Assembly)
      *b

      Front view of wire harness connector

      (to No. 1 HV Supply Stack Sub-assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z31-6 (TB0) - A-1 (TB0) Always Below 1 Ω
      z31-26 (GB0) - A-4 (GB0) Always Below 1 Ω
      z31-25 (TB1) - A-5 (TB1) Always Below 1 Ω
      z31-5 (GB1) - A-2 (GB1) Always Below 1 Ω
      z31-4 (TB2) - A-3 (TB2) Always Below 1 Ω
      z31-24 (GB2) - A-6 (GB2) Always Below 1 Ω
      Standard Resistance
      Tester Connection Condition Specified Condition
      z31-6 (TB0) or A-1 (TB0) - Body ground and other terminals Always 10 kΩ or higher
      z31-26 (GB0) or A-4 (GB0) - Body ground and other terminals Always 10 kΩ or higher
      z31-25 (TB1) or A-5 (TB1) - Body ground and other terminals Always 10 kΩ or higher
      z31-5 (GB1) or A-2 (GB1) - Body ground and other terminals Always 10 kΩ or higher
      z31-4 (TB2) or A-3 (TB2) - Body ground and other terminals Always 10 kΩ or higher
      z31-24 (GB2) or A-6 (GB2) - Body ground and other terminals Always 10 kΩ or higher

    6. Reconnect the A No. 1 HV supply stack sub-assembly connector.

    7. Reconnect the z31 battery ECU assembly connector.

    8. Install the upper No. 1 hybrid battery cover sub-assembly.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO. 1 HV SUPPLY STACK SUB-ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR 3 to 5)

    Result
    Proceed to
    OK
    NG

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


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

      Note

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the upper No. 1 hybrid battery cover sub-assembly.

      Click here

    3. B004AUFE01

      Disconnect the z31 battery ECU assembly connector.

      Note

      Before disconnecting the connector, check that it is not loose or disconnected.

    4. B004B3CC11
      *a

      Rear view of wire harness connector

      (to Battery ECU Assembly)

      Measure the resistance of the circuit for the malfunctioning sensor (battery temperature sensor 3 to 5).

      Tester Connection
      Tester Connection Battery Temperature Sensor
      z31-23(TB3) - z31-3(GB3) 3
      z31-2(TB4) - z31-22(GB4) 4
      z31-21(TB5) - z31-1(GB5) 5
      Standard Resistance
      Thermistor Temperature Condition Specified Condition
      20 to 30°C (68 to 86°F) Always 8.22 to 12.2 kΩ
      30 to 40°C (86 to 104°F) Always 5.74 to 8.41 kΩ
      40 to 50°C (104 to 122°F) Always 4.09 to 5.91 kΩ

    5. Measure the resistance according to the value (s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      z31-23 (TB3) - Body ground and other terminals (except z31-3 (GB3)) Always 10 kΩ or higher
      z31-3 (GB3) - Body ground and other terminals (except z31-23 (TB3)) Always 10 kΩ or higher
      z31-2 (TB4) - Body ground and other terminals (except z31-22 (GB4)) Always 10 kΩ or higher
      z31-22 (GB4) - Body ground and other terminals (except z31-2 (TB4)) Always 10 kΩ or higher
      z31-21 (TB5) - Body ground and other terminals (except z31-1 (GB5)) Always 10 kΩ or higher
      z31-1 (GB5) - Body ground and other terminals (except z31-21 (TB5)) Always 10 kΩ or higher

    6. Reconnect the z31 battery ECU assembly connector.

    7. Install the upper No. 1 hybrid battery cover sub-assembly.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BATTERY ECU ASSEMBLY Click here

    NG

  6. CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - NO. 2 HV SUPPLY STACK SUB-ASSEMBLY)

    Result
    Proceed to
    OK
    NG

    CAUTION:

    Be sure to wear insulated gloves and protective goggles.


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

      Note

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the upper No. 1 hybrid battery cover sub-assembly.

      Click here

    3. B004AUFE01

      Disconnect the z31 battery ECU assembly connector.

      Note

      Before disconnecting the connector, check that it is not loose or disconnected.

    4. B004AZYE01

      Disconnect the B No. 2 HV supply stack sub-assembly connector.

      Note

      Before disconnecting the connector, check that it is not loose or disconnected.

    5. B004C76C04
      *a

      Rear view of wire harness connector

      (to Battery ECU Assembly)
      *b

      Front view of wire harness connector

      (to No. 2 HV Supply Stack Sub-assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      z31-23 (TB3) - B-4 (TB3) Always Below 1 Ω
      z31-3 (GB3) - B-1 (GB3) Always Below 1 Ω
      z31-2 (TB4) - B-2 (TB4) Always Below 1 Ω
      z31-22 (GB4) - B-5 (GB4) Always Below 1 Ω
      z31-21 (TB5) - B-6 (TB5) Always Below 1 Ω
      z31-1 (GB5) - B-3 (GB5) Always Below 1 Ω
      Standard Resistance
      Tester Connection Condition Specified Condition
      z31-23 (TB3) or B-4 (TB3) - Body ground and other terminals Always 10 kΩ or higher
      z31-3 (GB3) or B-1 (GB3) - Body ground and other terminals Always 10 kΩ or higher
      z31-2 (TB4) or B-2 (TB4) - Body ground and other terminals Always 10 kΩ or higher
      z31-22 (GB4) or B-5 (GB4) - Body ground and other terminals Always 10 kΩ or higher
      z31-21 (TB5) or B-6 (TB5) - Body ground and other terminals Always 10 kΩ or higher
      z31-1 (GB5) or B-3 (GB5) - Body ground and other terminals Always 10 kΩ or higher

    6. Reconnect the B No. 2 HV supply stack sub-assembly connector.

    7. Reconnect the z31 battery ECU assembly connector.

    8. Install the upper No. 1 hybrid battery cover sub-assembly.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NO. 2 HV SUPPLY STACK SUB-ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR