HYBRID CONTROL SYSTEM, Diagnostic DTC:P0AC0-817

DTC Code DTC Name
P0AC0-817 Hybrid Battery Pack Current Sensor Circuit Range / Performance

DESCRIPTION

The battery current sensor, which is located in the hybrid battery junction block assembly on the positive side of the HV battery, detects the amperage that flows to and from the HV battery. The battery voltage sensor receives a voltage of between 0 and 5 V that is in proportion to the amperage flowing in the cable. This voltage goes into the IB terminal from the battery current sensor. A battery current sensor output voltage below 2.5 V indicates that the HV battery is being charged, and a voltage above 2.5 V indicates that the HV battery is being discharged. The hybrid vehicle control ECU assembly determines the amount of either charge or discharge amperage that is being received by the HV battery based on the signals that are input to terminal IB of the battery voltage sensor from the battery current sensor. The hybrid vehicle control ECU assembly also calculates the SOC (state of charge) of the HV battery based on the accumulated amperage.

A01KU42E04
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0AC0-817 Hybrid Battery Pack Current Sensor Circuit Range / Performance HV battery current sensor performance problem

  • Hybrid battery junction block assembly

  • Battery voltage sensor

 Comes on

Master Warning Light:

Comes on

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. Check for DTCs.


      Powertrain > Hybrid Control > Trouble Codes
      Result
      Result Proceed to
      P0AC0-817 only is output. A
      P0AFC-123 is output. B

    5. Turn the power switch off.


    B

    GO TO DTC CHART (P0AFC-123) Click here

    A

  2. REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY

    Click here

    Result
    Proceed to
    NEXT

    NEXT

  3. CLEAR DTC


    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 and record the DTCs and freeze frame data.


      Powertrain > Hybrid Control > Trouble Codes

    5. Clear DTCs and freeze frame data.


      Powertrain > Hybrid Control > Clear DTCs

    6. Turn the power switch off.

      Result
      Proceed to
      NEXT

    NEXT

  4. PERFORM ROAD TEST

    Result
    Proceed to
    NEXT

    NEXT

  5. 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. Check for DTCs.


      Powertrain > Hybrid Control > Trouble Codes
      Result
      Result Proceed to
      P0AC0-817 is not output. A
      P0AC0-817 is output again. B

    5. Turn the power switch off.


    A

    COMPLETED

    B

    REPAIR BATTERY VOLTAGE SENSOR Click here