HYBRID BATTERY SYSTEM, Diagnostic DTC:P301A-123

DTC Code DTC Name
P301A-123 Open in Hybrid Battery Cell Voltage Detection Circuit

DESCRIPTION


WIRING DIAGRAM

A005CL3E05
*a Battery Block 1
*b Battery Block 0
*c Battery Smart Unit
*d HV Battery
A005D7JE10
*a Battery Block 3
*b Battery Block 2
*c Battery Smart Unit
*d HV Battery
A005D7JE11
*a Battery Block 5
*b Battery Block 4
*c Battery Smart Unit
*d HV Battery
A005BMXE13
*a Battery Block 7
*b Battery Block 6
*c Battery Smart Unit
*d HV Battery
A005CL3E06
*a Battery Block 1
*b Battery Block 0
*c Battery Smart Unit
*d HV Battery
A005D7JE12
*a Battery Block 3
*b Battery Block 2
*c Battery Smart Unit
*d HV Battery
A005D7JE19
*a Battery Block 5
*b Battery Block 4
*c Battery Smart Unit
*d HV Battery
A005BMXE14
*a Battery Block 7
*b Battery Block 6
*c Battery Smart Unit
*d HV Battery

CAUTION / NOTICE / HINT

CAUTION:


  • Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.

  • 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.

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

  • Before returning the HV battery, 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.

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 (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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

    4. Read output DTCs.

      Result
      Result Proceed to
      P301B-123 is not output A
      P301B-123 is output B

    5. Turn the power switch off.


    B

    GO TO DTC CHART (P301B-123) Click here

    A

  2. CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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

    4. Read output DTCs.

      Result
      Result Proceed to
      P31AB-123 is not output A
      P31AB-123 is output B

    5. Turn the power switch off.


    B

    GO TO DTC CHART (P31AB-123) Click here

    A

  3. CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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

    4. Read output DTCs Click here.

      Result
      Result Proceed to
      P0AFC-123 is not output. A
      P0AFC-123 is also output. B

    5. Turn the power switch off.


    B

    GO TO DTC CHART (P0AFC-123) Click here

    A

  4. CHECK CONNECTOR CONNECTION CONDITION (BATTERY SMART UNIT CONNECTOR)

    CAUTION:

    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 power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the No. 1 hybrid battery shield sub-assembly Click here.

    3. A005BXL

      Check the connections of the battery smart unit.

      OK
      The connectors are connected securely and there are no contact problems.

    4. Install the No. 1 hybrid battery shield sub-assembly.


    NG

    CONNECT SECURELY

    OK

  5. CLEAR DTC (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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

    4. Clear the DTCs and freeze frame data.

      Note

      When DTCs are cleared, freeze frame data and INF codes are also cleared.

    5. Turn the power switch off.


    NEXT

  6. RECONFIRM DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

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

    4. Read output DTCs.

      Result
      Result Proceed to
      P301A-123 is not output A
      P301A-123 is output B

    5. Turn the power switch off.


    A

    RETURNS TO NORMAL OPERATION

    B

  7. CHECK HV BATTERY (BATTERY CELL VOLTAGE)

    CAUTION:

    Be sure to wear insulated gloves.


    1. 2012/05 - 2013/12:


      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 No. 1 hybrid battery shield sub-assembly Click here.

      3. Disconnect the z26 battery smart unit connector.

      4. A005EOBE02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery Block 0)
        Tester Connection Switch Condition Specified Condition
        z26-13 (GA0) - z26-9 (VA1) Power switch off Below 1.9 V
        z26-9 (VA1) - z26-5 (VA2) Power switch off Below 1.9 V
        z26-5 (VA2) - z26-1 (VA3) Power switch off Below 1.9 V
        z26-1 (VA3) - z26-14 (VA4) Power switch off Below 1.9 V
        z26-14 (VA4) - z26-10 (VA5) Power switch off Below 1.9 V
        z26-10 (VA5) - z26-6 (VA6) Power switch off Below 1.9 V
        z26-6 (VA6) - z26-2 (VA7) Power switch off Below 1.9 V

        Note

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

      5. A005A3CE02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery Block 1)
        Tester Connection Switch Condition Specified Condition
        z26-2 (VA7) - z26-15 (VA8) Power switch off Below 1.9 V
        z26-15 (VA8) - z26-11 (VA9) Power switch off Below 1.9 V
        z26-11 (VA9) - z26-7 (VA10) Power switch off Below 1.9 V
        z26-7 (VA10) - z26-16 (VA11) Power switch off Below 1.9 V
        z26-16 (VA11) - z26-12 (VA12) Power switch off Below 1.9 V
        z26-12 (VA12) - z26-8 (VA13) Power switch off Below 1.9 V
        z26-8 (VA13) - z26-4 (VA14) Power switch off Below 1.9 V

        Note

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

      6. Reconnect the z26 battery smart unit connector.

      7. Disconnect the z27 battery smart unit connector.

      8. A005B43E02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery Block 2)
        Tester Connection Switch Condition Specified Condition
        z27-11 (GA1) - z27-6 (VA15) Power switch off Below 1.9 V
        z27-6 (VA15) - z27-1 (VA16) Power switch off Below 1.9 V
        z27-1 (VA16) - z27-12 (VA17) Power switch off Below 1.9 V
        z27-12 (VA17) - z27-7 (VA18) Power switch off Below 1.9 V
        z27-7 (VA18) - z27-2 (VA19) Power switch off Below 1.9 V
        z27-2 (VA19) - z27-13 (VA20) Power switch off Below 1.9 V
        z27-13 (VA20) - z27-8 (VA21) Power switch off Below 1.9 V

        Note

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

      9. A005EC4E02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery Block 3)
        Tester Connection Switch Condition Specified Condition
        z27-8 (VA21) - z27-3 (VA22) Power switch off Below 1.9 V
        z27-3 (VA22) - z27-14 (VA23) Power switch off Below 1.9 V
        z27-14 (VA23) - z27-9 (VA24) Power switch off Below 1.9 V
        z27-9 (VA24) - z27-4 (VA25) Power switch off Below 1.9 V
        z27-4 (VA25) - z27-15 (VA26) Power switch off Below 1.9 V
        z27-15 (VA26) - z27-10 (VA27) Power switch off Below 1.9 V
        z27-10 (VA27) - z27-5 (VA28) Power switch off Below 1.9 V

        Note

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

      10. Reconnect the z27 battery smart unit connector.

      11. Disconnect the z22 battery smart unit connector.

      12. A005D53E02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery block 4)
        Tester Connection Switch Condition Specified Condition
        z22-11 (GA2) - z22-6 (VA29) Power switch off Below 1.9 V
        z22-6 (VA29) - z22-1 (VA30) Power switch off Below 1.9 V
        z22-1 (VA30) - z22-12 (VA31) Power switch off Below 1.9 V
        z22-12 (VA31) - z22-7 (VA32) Power switch off Below 1.9 V
        z22-7 (VA32) - z22-2 (VA33) Power switch off Below 1.9 V
        z22-2 (VA33) - z22-13 (VA34) Power switch off Below 1.9 V
        z22-13 (VA34) - z22-8 (VA35) Power switch off Below 1.9 V

        Note

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

      13. A005EJ5E02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery block 5)
        Tester Connection Switch Condition Specified Condition
        z22-8 (VA35) - z22-3 (VA36) Power switch off Below 1.9 V
        z22-3 (VA36) - z22-14 (VA37) Power switch off Below 1.9 V
        z22-14 (VA37) - z22-9 (VA38) Power switch off Below 1.9 V
        z22-9 (VA38) - z22-4 (VA39) Power switch off Below 1.9 V
        z22-4 (VA39) - z22-15 (VA40) Power switch off Below 1.9 V
        z22-15 (VA40) - z22-10 (VA41) Power switch off Below 1.9 V
        z22-10 (VA41) - z22-5 (VA42) Power switch off Below 1.9 V

        Note

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

      14. Reconnect the z22 battery smart unit connector.

      15. Disconnect the z23 battery smart unit connector.

      16. A005BR5E02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery Block 6)
        Tester Connection Switch Condition Specified Condition
        z23-13 (GA3) - z23-9 (VA43) Power switch off Below 1.9 V
        z23-9 (VA43) - z23-5 (VA44) Power switch off Below 1.9 V
        z23-5 (VA44) - z23-1 (VA45) Power switch off Below 1.9 V
        z23-1 (VA45) - z23-14 (VA46) Power switch off Below 1.9 V
        z23-14 (VA46) - z23-10 (VA47) Power switch off Below 1.9 V
        z23-10 (VA47) - z23-6 (VA48) Power switch off Below 1.9 V
        z23-6 (VA48) - z23-2 (VA49) Power switch off Below 1.9 V

        Note

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

      17. A005A3GE02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery Block 7)
        Tester Connection Switch Condition Specified Condition
        z23-2 (VA49) - z23-15 (VA50) Power switch off Below 1.9 V
        z23-15 (VA50) - z23-11 (VA51) Power switch off Below 1.9 V
        z23-11 (VA51) - z23-7 (VA52) Power switch off Below 1.9 V
        z23-7 (VA52) - z23-16 (VA53) Power switch off Below 1.9 V
        z23-16 (VA53) - z23-12 (VA54) Power switch off Below 1.9 V
        z23-12 (VA54) - z23-8 (VA55) Power switch off Below 1.9 V
        z23-8 (VA55) - z23-4 (VA56) Power switch off Below 1.9 V

        Note

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

        Result
        Result Proceed to
        Voltage between each pair of terminals is below 1.9 V. B
        Other than above. A

      18. Reconnect the z23 battery smart unit connector.

      19. Install the No. 1 hybrid battery shield sub-assembly.

    2. 2013/12 -:


      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 No. 1 hybrid battery shield sub-assembly Click here.

      3. Disconnect the z32 battery smart unit connector.

      4. A005DH8E02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery Block 0)
        Tester Connection Switch Condition Specified Condition
        z32-13 (GA0) - z32-9 (VA1) Power switch off Below 1.9 V
        z32-9 (VA1) - z32-5 (VA2) Power switch off Below 1.9 V
        z32-5 (VA2) - z32-1 (VA3) Power switch off Below 1.9 V
        z32-1 (VA3) - z32-14 (VA4) Power switch off Below 1.9 V
        z32-14 (VA4) - z32-10 (VA5) Power switch off Below 1.9 V
        z32-10 (VA5) - z32-6 (VA6) Power switch off Below 1.9 V
        z32-6 (VA6) - z32-2 (VA7) Power switch off Below 1.9 V

        Note

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

      5. A005E72E02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery Block 1)
        Tester Connection Switch Condition Specified Condition
        z32-2 (VA7) - z32-15 (VA8) Power switch off Below 1.9 V
        z32-15 (VA8) - z32-11 (VA9) Power switch off Below 1.9 V
        z32-11 (VA9) - z32-7 (VA10) Power switch off Below 1.9 V
        z32-7 (VA10) - z32-16 (VA11) Power switch off Below 1.9 V
        z32-16 (VA11) - z32-12 (VA12) Power switch off Below 1.9 V
        z32-12 (VA12) - z32-8 (VA13) Power switch off Below 1.9 V
        z32-8 (VA13) - z32-4 (VA14) Power switch off Below 1.9 V

        Note

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

      6. Reconnect the z32 battery smart unit connector.

      7. Disconnect the z33 battery smart unit connector.

      8. A005BGIE02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery Block 2)
        Tester Connection Switch Condition Specified Condition
        z33-11 (GA1) - z33-6 (VA15) Power switch off Below 1.9 V
        z33-6 (VA15) - z33-1 (VA16) Power switch off Below 1.9 V
        z33-1 (VA16) - z33-12 (VA17) Power switch off Below 1.9 V
        z33-12 (VA17) - z33-7 (VA18) Power switch off Below 1.9 V
        z33-7 (VA18) - z33-2 (VA19) Power switch off Below 1.9 V
        z33-2 (VA19) - z33-13 (VA20) Power switch off Below 1.9 V
        z33-13 (VA20) - z33-8 (VA21) Power switch off Below 1.9 V

        Note

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

      9. A005CZ6E02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery Block 3)
        Tester Connection Switch Condition Specified Condition
        z33-8 (VA21) - z33-3 (VA22) Power switch off Below 1.9 V
        z33-3 (VA22) - z33-14 (VA23) Power switch off Below 1.9 V
        z33-14 (VA23) - z33-9 (VA24) Power switch off Below 1.9 V
        z33-9 (VA24) - z33-4 (VA25) Power switch off Below 1.9 V
        z33-4 (VA25) - z33-15 (VA26) Power switch off Below 1.9 V
        z33-15 (VA26) - z33-10 (VA27) Power switch off Below 1.9 V
        z33-10 (VA27) - z33-5 (VA28) Power switch off Below 1.9 V

        Note

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

      10. Reconnect the z33 battery smart unit connector.

      11. Disconnect the z30 battery smart unit connector.

      12. A005AZ2E02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery block 4)
        Tester Connection Switch Condition Specified Condition
        z30-11 (GA2) - z30-6 (VA29) Power switch off Below 1.9 V
        z30-6 (VA29) - z30-1 (VA30) Power switch off Below 1.9 V
        z30-1 (VA30) - z30-12 (VA31) Power switch off Below 1.9 V
        z30-12 (VA31) - z30-7 (VA32) Power switch off Below 1.9 V
        z30-7 (VA32) - z30-2 (VA33) Power switch off Below 1.9 V
        z30-2 (VA33) - z30-13 (VA34) Power switch off Below 1.9 V
        z30-13 (VA34) - z30-8 (VA35) Power switch off Below 1.9 V

        Note

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

      13. A005D9CE02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery block 5)
        Tester Connection Switch Condition Specified Condition
        z30-8 (VA35) - z30-3 (VA36) Power switch off Below 1.9 V
        z30-3 (VA36) - z30-14 (VA37) Power switch off Below 1.9 V
        z30-14 (VA37) - z30-9 (VA38) Power switch off Below 1.9 V
        z30-9 (VA38) - z30-4 (VA39) Power switch off Below 1.9 V
        z30-4 (VA39) - z30-15 (VA40) Power switch off Below 1.9 V
        z30-15 (VA40) - z30-10 (VA41) Power switch off Below 1.9 V
        z30-10 (VA41) - z30-5 (VA42) Power switch off Below 1.9 V

        Note

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

      14. Reconnect the z30 battery smart unit connector.

      15. Disconnect the z31 battery smart unit connector.

      16. A005AE1E02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery Block 6)
        Tester Connection Switch Condition Specified Condition
        z31-13 (GA3) - z31-9 (VA43) Power switch off Below 1.9 V
        z31-9 (VA43) - z31-5 (VA44) Power switch off Below 1.9 V
        z31-5 (VA44) - z31-1 (VA45) Power switch off Below 1.9 V
        z31-1 (VA45) - z31-14 (VA46) Power switch off Below 1.9 V
        z31-14 (VA46) - z31-10 (VA47) Power switch off Below 1.9 V
        z31-10 (VA47) - z31-6 (VA48) Power switch off Below 1.9 V
        z31-6 (VA48) - z31-2 (VA49) Power switch off Below 1.9 V

        Note

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

      17. A005EXDE02
        Text in Illustration
        *a

        Rear view of wire harness connector

        (to Battery Smart Unit)

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

        Standard Voltage (Battery Block 7)
        Tester Connection Switch Condition Specified Condition
        z31-2 (VA49) - z31-15 (VA50) Power switch off Below 1.9 V
        z31-15 (VA50) - z31-11 (VA51) Power switch off Below 1.9 V
        z31-11 (VA51) - z31-7 (VA52) Power switch off Below 1.9 V
        z31-7 (VA52) - z31-16 (VA53) Power switch off Below 1.9 V
        z31-16 (VA53) - z31-12 (VA54) Power switch off Below 1.9 V
        z31-12 (VA54) - z31-8 (VA55) Power switch off Below 1.9 V
        z31-8 (VA55) - z31-4 (VA56) Power switch off Below 1.9 V

        Note

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

        Result
        Result Proceed to
        Voltage between each pair of terminals is below 1.9 V. B
        Other than above. A

      18. Reconnect the z31 battery smart unit connector.

      19. Install the No. 1 hybrid battery shield sub-assembly.


    A

    REPLACE BATTERY SMART UNIT Click here

    B

    REPLACE HV BATTERY Click here