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HYBRID CONTROL SYSTEM, Diagnostic DTC:P0ABF00

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DTC Code DTC Name
P0ABF00 Hybrid/EV Battery Current Sensor "A" Circuit Range/Performance
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DESCRIPTION

A battery current sensor, which is mounted on the positive cable side of each HV battery junction block assembly, detects the current flowing to or from the battery pack. The battery current sensor sends a voltage, which varies between 0 and 5 V in proportion to the amperage, to the IB0 terminal of the battery ECU assembly. Similarly, it sends a voltage, which varies between 0 and 5 V in inverse proportion to the amperage, to the IB1 terminal of the battery ECU assembly. When the voltage at the IB0 terminal is below 2.8 V and the voltage at the IB1 terminal is above 2.2 V, this indicates that the HV battery is being discharged. Additionally, Meanwhile, when the voltage at of the IB0 terminal is above 2.8 V and the voltage at of the IB1 terminal is below 2.2 V, this indicates that the HV battery is being charged. The battery ECU assembly sends the signals from its IB0 and IB1 terminals to the hybrid vehicle control ECU assembly. The hybrid vehicle control ECU assembly determines the charging and discharging amperage of the HV battery based on the received signals and calculates the SOC of the HV battery using the cumulative amperage value.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0ABF00 Hybrid/EV Battery Current Sensor "A" Circuit Range/Performance

Abnormal battery current sensor characteristics:

(based on hybrid system consumption and HV battery output).

(1 trip detection logic)

  • HV battery junction block assembly

  • Battery ECU assembly

  • Wire harness or connector

 Comes on

Master Warning Light:

Comes on
Table 1. Related Data List
DTC No. Data List
P0ABF00 -
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CONFIRMATION DRIVING PATTERN

Tip:

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.

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  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 Current", "Motor Torque" and "Generator Torque".

  7. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.

  8. Check the DTC judgment result.

    Tip:

    • 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, perform driving pattern again.

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WIRING DIAGRAM

Refer to the wiring diagram for DTC P0ABF11.

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CAUTION / NOTICE / HINT

CAUTION:

  • B004STG

    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

  • B004Y5N

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

  • B004SX1

    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.

  • B004W3JC06
    *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.

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    Tip:

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

  • Make sure to insulate the high-voltage connectors and terminals of the HV battery with insulating tape after removing it.

    If the HV battery stored without insulating the connectors and terminals, electric shock or fire may result.

  • B004X4P

    After removing the HV battery or the HV supply stack sub-assembly, keep it away from water. Exposure to water may cause the HV battery or the HV supply stack sub-assembly 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.

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PROCEDURE


  1. Click here

    CHECK HARNESS AND CONNECTOR (BATTERY ECU ASSEMBLY - HV BATTERY JUNCTION BLOCK ASSEMBLY)

    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.

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    3. B004V2KN07

      Disconnect the e4 battery ECU assembly connector.

      Note:

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

    4. B004XPQN01

      Disconnect the e1 HV battery junction block assembly connector.

      Note:

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

    5. B004UNQC01
      *a

      Front view of wire harness connector

      (to HV Battery Junction Block Assembly (Battery Current Sensor))
      *b

      Rear view of wire harness connector

      (to Battery ECU Assembly)

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      e4-19 (VIB) - e1-1 (VIB) Always Below 1 Ω
      e4-38 (IB1) - e1-2 (IB1) Always Below 1 Ω
      e4-37 (GIB) - e1-3 (GIB) Always Below 1 Ω
      e4-18 (IB0) - e1-4 (IB0) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      e4-19 (VIB) or e1-1 (VIB) - Body ground and other terminals Always 10 kΩ or higher
      e4-38 (IB1) or e1-2 (IB1) - Body ground and other terminals Always 10 kΩ or higher
      e4-37 (GIB) or e1-3 (GIB) - Body ground and other terminals Always 10 kΩ or higher
      e4-18 (IB0) or e1-4 (IB0) - Body ground and other terminals Always 10 kΩ or higher

    6. Reconnect the e1 HV battery junction block assembly connector.

    7. Reconnect the e4 battery ECU assembly connector.

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

      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

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    REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY

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    Result
    Proceed to
    NEXT

  3. Click here

    CLEAR DTC

    Result
    Proceed to
    NEXT

    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.


      1. Powertrain > Hybrid Control > Trouble Codes


    5. Clear the DTCs and freeze frame data.


      1. Powertrain > Hybrid Control > Clear DTCs


    6. Turn the power switch off.

      Result
      Proceed to
      NEXT

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    PERFORM ROAD 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 that "Hybrid Battery SOC" shows 60% or less.


      1. Powertrain > Hybrid Control > Data List
        Tester Display
        Hybrid Battery SOC




      Tip:

      If "Hybrid Battery SOC" is 60% or more, reduce it to below 60% by leaving the hybrid system on with neutral (N) selected.

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

    6. Turn the power switch on (READY).

    7. Move the shift lever to select shift state drive (D) while depressing the brake pedal with your left foot and repeat the following steps for 1 minute or more.

      Tip:

      Depress and release the accelerator pedal in 5-second intervals (2.5 seconds each) continuously.


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

      2. Release the accelerator pedal.

    8. Turn the power switch off.

      Result
      Proceed to
      NEXT

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    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.


      1. Powertrain > Hybrid Control > Trouble Codes


      Result
      Proceed to
      P0ABF00 is not output.
      P0ABF00 is output again.

    5. Turn the power switch off.


    • P0ABF00 is not output.

      COMPLETED

    • P0ABF00 is output again.

      REPLACE BATTERY ECU ASSEMBLYClick here