HYBRID BATTERY SYSTEM, Diagnostic DTC:P0AC0-123

DTC Code DTC Name
P0AC0-123 Hybrid Battery Pack Current Sensor Circuit Range / Performance

DESCRIPTION

Refer to the Description for DTC P0ABF-123 Click here.

DTC No. INF Code DTC Detection Condition Trouble Area
P0AC0 123 When the battery current sensor is abnormal (1 trip detection)

  • Hybrid battery junction block assembly

  • Battery smart unit

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.

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
      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

  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 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

  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.

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

    5. Turn the power switch off.


    B

    GO TO DTC CHART (P301A-123) Click here

    A

  4. REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY

    Click here


    NEXT

  5. CLEAR DTC (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Check that the shift lever is in P.

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

    5. Clear the DTCs and freeze frame data.

      Note

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


    NEXT

  6. SIMULATION TEST


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Data List

    4. Check "State of Charge (All Bat)" in the Data List.

    5. Check that "State of Charge (All Bat)" is 60% or less.

      Tech Tips

      If "State of Charge (All Bat)" is more than 60%, leave the hybrid system on with neutral (N) selected and reduce the SOC to 60% or less.

    6. Apply the parking brake and secure the wheels using chocks.

    7. Turn the power switch on (READY).

    8. Depress the brake pedal with your left foot and move the shift lever to D. Repeat the following steps continuously for 1 minute or more.

      Tech Tips

      Depress and release the accelerator pedal at intervals of 2.5 seconds continuously.


      1. While depressing the brake pedal with your left foot, depress the accelerator pedal with your right foot.

      2. Release the accelerator pedal.

    9. Turn the power switch off.


    NEXT

  7. RECONFIRM 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
      DTCs P0AC0-123 is not output. A
      DTCs P0AC0-123 is output. B

    5. Power switch off.


    A

    RECOVERY TO NORMAL

    B

    REPLACE BATTERY SMART UNIT Click here