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Home >> Toyota >> 2019 >> Mirai >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Battery System - Diagnostic Codes >> Hybrid Battery System >> DTC P3011-123: Battery Block 1 Becomes Weak; DTC P3012-123: Battery Block 2 Becomes Weak; DTC P3013-123: Battery Block 3 Becomes Weak; DTC P3014-123: Battery Block 4 Becomes Weak; DTC P3015-123: Battery Block 5 Becomes Weak; DTC P3016-123: Battery Block 6 Becomes Weak; DTC P3017-123: Battery Block 7 Becomes Weak; DTC P3018-123: Battery Block 8 Becomes Weak; DTC P3019-123: Battery Block 9 Becomes Weak; DTC P3020-123: Battery Block 10 Becomes Weak; DTC P3021-123: Battery Block 11 Becomes Weak; DTC P3022-123: Battery Block 12 Becomes Weak; DTC P3023-123: Battery Block 13 Becomes Weak; DTC P3024-123: Battery Block 14 Becomes Weak; DTC P3025-123: Battery Block 15 Becomes Weak; DTC P3026-123: Battery Block 16 Becomes Weak; DTC P3027-123: Battery Block 17 Becomes Weak [06/2015 - ] >> Procedure
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DTC P3011-123: Battery Block 1 Becomes Weak; DTC P3012-123: Battery Block 2 Becomes Weak; DTC P3013-123: Battery Block 3 Becomes Weak; DTC P3014-123: Battery Block 4 Becomes Weak; DTC P3015-123: Battery Block 5 Becomes Weak; DTC P3016-123: Battery Block 6 Becomes Weak; DTC P3017-123: Battery Block 7 Becomes Weak; DTC P3018-123: Battery Block 8 Becomes Weak; DTC P3019-123: Battery Block 9 Becomes Weak; DTC P3020-123: Battery Block 10 Becomes Weak; DTC P3021-123: Battery Block 11 Becomes Weak; DTC P3022-123: Battery Block 12 Becomes Weak; DTC P3023-123: Battery Block 13 Becomes Weak; DTC P3024-123: Battery Block 14 Becomes Weak; DTC P3025-123: Battery Block 15 Becomes Weak; DTC P3026-123: Battery Block 16 Becomes Weak; DTC P3027-123: Battery Block 17 Becomes Weak [06/2015 - ]: Procedure

  1. CHECK DTC OUTPUT (EV) 

    See step  1

    Result

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

    Result: 

    B 

    GO TO DTC CHART (P0AFC-123). Refer to  DTC P0AFC-123: Battery Pack Sensor Module [06/2015 - ]  

    Result: 

    A 

    See step  2

  2. READ VALUE USING TECHSTREAM (VB1 - VB17) 
    1. Ensure the safety of the areas in front and at the back of the vehicle.
    2. Apply the parking brake and secure the wheels using chocks.
    3. Connect the Techstream to the DLC3.
    4. Turn the power switch on (READY).
    5. Turn the air conditioning off and wait for 5 minutes or more.
    6. Enter the following menus: Powertrain / EV / Data List / Battery Block Voltage -V01 to V17.
    7. Firmly depress the brake pedal with your left foot.
    8. Move the shift lever to D.
    9. Record each Battery Block Voltage from the Data List "Battery Block Voltage -V01 to V17" while fully depressing the accelerator pedal.

      Powertrain > EV > Data List 

      Tester Display
      Battery Block Voltage -V01
      Battery Block Voltage -V02
      Battery Block Voltage -V03
      Battery Block Voltage -V04
      Battery Block Voltage -V05
      Battery Block Voltage -V06
      Battery Block Voltage -V07
      Battery Block Voltage -V08
      Battery Block Voltage -V09
      Battery Block Voltage -V10
      Battery Block Voltage -V11
      Battery Block Voltage -V12
      Battery Block Voltage -V13
      Battery Block Voltage -V14
      Battery Block Voltage -V15
      Battery Block Voltage -V16
      Battery Block Voltage -V17
    10. Compare the Battery Block Voltages "Battery Block Voltage -V01 to V17" between the even and odd number groups in each combination shown in the tables below.
      TABLE 1

      Circuit A Battery Block Circuit B Battery Block Condition
      Battery Block Voltage -V01 (VB1) Battery Block Voltage -V02 (VB2) "Battery Block Voltage -V01" - "Battery Block Voltage -V02" = 0.3 V or more
      Battery Block Voltage -V04 (VB4) Battery Block Voltage -V03 (VB3) "Battery Block Voltage -V04" - "Battery Block Voltage -V03" = 0.3 V or more
      Battery Block Voltage -V05 (VB5) Battery Block Voltage -V06 (VB6) "Battery Block Voltage -V05" - "Battery Block Voltage -V06" = 0.3 V or more
      Battery Block Voltage -V08 (VB8) Battery Block Voltage -V07 (VB7) "Battery Block Voltage -V08" - "Battery Block Voltage -V07" = 0.3 V or more
      Battery Block Voltage -V09 (VB9) Battery Block Voltage -V10 (VB10) "Battery Block Voltage -V09" - "Battery Block Voltage -V10" = 0.3 V or more
      Battery Block Voltage -V12 (VB12) Battery Block Voltage -V11 (VB11) "Battery Block Voltage -V12" - "Battery Block Voltage -V11" = 0.3 V or more
      Battery Block Voltage -V13 (VB13) Battery Block Voltage -V14 (VB14) "Battery Block Voltage -V13" - "Battery Block Voltage -V14" = 0.3 V or more
      Battery Block Voltage -V16 (VB16) Battery Block Voltage -V15 (VB15) "Battery Block Voltage -V16" - "Battery Block Voltage -V15" = 0.3 V or more
      Battery Block Voltage -V17 (VB17) Battery Block Voltage -V14 (VB14) "Battery Block Voltage -V17" - "Battery Block Voltage -V14" = 0.3 V or more
      TABLE 2

      Circuit A Battery Block Circuit B Battery Block Condition
      Battery Block Voltage -V01 (VB1) Battery Block Voltage -V02 (VB2) "Battery Block Voltage -V02" - "Battery Block Voltage -V01" = 0.3 V or more
      Battery Block Voltage -V04 (VB4) Battery Block Voltage -V03 (VB3) "Battery Block Voltage -V03" - "Battery Block Voltage -V04" = 0.3 V or more
      Battery Block Voltage -V05 (VB5) Battery Block Voltage -V06 (VB6) "Battery Block Voltage -V06" - "Battery Block Voltage -V05" = 0.3 V or more
      Battery Block Voltage -V08 (VB8) Battery Block Voltage -V07 (VB7) "Battery Block Voltage -V07" - "Battery Block Voltage -V08" = 0.3 V or more
      Battery Block Voltage -V09 (VB9) Battery Block Voltage -V10 (VB10) "Battery Block Voltage -V10" - "Battery Block Voltage -V09" = 0.3 V or more
      Battery Block Voltage -V12 (VB12) Battery Block Voltage -V11 (VB11) "Battery Block Voltage -V11" - "Battery Block Voltage -V12" = 0.3 V or more
      Battery Block Voltage -V13 (VB13) Battery Block Voltage -V14 (VB14) "Battery Block Voltage -V14" - "Battery Block Voltage -V13" = 0.3 V or more
      Battery Block Voltage -V16 (VB16) Battery Block Voltage -V15 (VB15) "Battery Block Voltage -V15" - "Battery Block Voltage -V16" = 0.3 V or more
      Battery Block Voltage -V17 (VB17) Battery Block Voltage -V14 (VB14) "Battery Block Voltage -V14" - "Battery Block Voltage -V17" = 0.3 V or more

      HINT: 

      Make sure to compare Battery Block Voltage -V17 to Battery Block Voltage -V14 in accordance with the tables above.

      GTY502829Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      When an internal malfunction occurs in the battery voltage sensor, this symptom (difference in voltage of 0.3 V or more for all 9 pairs of blocks) will occur.

      Result

      Result Proceed to
      All conditions in table 1 or table 2 are met. A
      Other than above B
    11. Turn the power switch off.
    12. Disconnect the Techstream from the DLC3.

    Result: 

    A 

    REPLACE BATTERY VOLTAGE SENSOR. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

    Result: 

    B 

    See step  3

  3. CHECK DTC OUTPUT (EV) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / EV / Trouble Codes.
    4. Read output DTCs.

      Powertrain > EV > Trouble Codes 

      Result

      Result Proceed to
      P3015-123 is not output. A
      P3015-123 is output. B

      HINT: 

      DTC P3015-123 may also be stored if there is foreign matter, etc. adhering to the connecting part of the service plug grip.

    5. Turn the power switch off.
    6. Disconnect the Techstream from the DLC3.

    Result: 

    A 

    REPLACE EV BATTERY. Refer to  REMOVAL [06/2015 - 11/2018]  , or refer to  REMOVAL [11/2018 - ] 

    Result: 

    B 

    REPLACE EV BATTERY AND SERVICE PLUG GRIP 

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