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 or 2 trip detection)

  • Hybrid battery junction block assembly

  • Battery smart unit

MONITOR DESCRIPTION

If the battery smart unit detects a malfunction in the battery current sensor, the power management control ECU will illuminate the MIL and set a DTC.

MONITOR STRATEGY

Related DTCs P0AC0 (INF 123): Current sensor malfunction(gain or offset)
Required sensors / components Battery current sensor
Frequency of operation Continuous
Duration TMC's intellectual property
MIL operation TMC's intellectual property
Sequence of operation None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not present TMC's intellectual property
Other conditions belong to TMC's intellectual property -

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property -

COMPONENT OPERATING RANGE

Battery smart unit P0AC0 (INF 123) is not detected

CONFIRMATION DRIVING PATTERN

  1. Connect the Techstream to the DLC3.

  2. Turn the power switch on (IG) and turn the Techstream on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off.

  5. Turn the power switch on (IG), wait for 10 seconds or more and then turn the power switch off.

  6. Turn the power switch on (READY) and turn the Techstream on.

  7. Perform a universal trip.

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

  9. Check that permanent DTCs are cleared.

    Tech Tips

    • If a permanent DTC is output, the system is malfunctioning.

    • If no permanent DTC is output, the system is normal.

INSPECTION PROCEDURE

CAUTION:

  • Before inspecting the high-voltage system, take safety precautions to prevent electrical shocks, such as wearing insulated gloves and removing the service plug grip. 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

    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 Techstream 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 or P0A95-123 is not output. A
      P0AFC-123 or P0A95-123 is also output. B

    5. Turn the power switch off.

    6. Disconnect the Techstream from the DLC3.

    B

    GO TO DTC CHART (HYBRID BATTERY SYSTEM)

    A

  2. REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY

    Click here

    NEXT

  3. CLEAR DTC (HYBRID CONTROL)

    1. Connect the Techstream 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 Click here.

    5. Perform a road test to charge and discharge the HV battery.

      Tech Tips

      2 trip detection logic is used. After the first road test, turn the power switch off and perform a road test again.

    6. Turn the power switch off.

    7. Disconnect the Techstream from the DLC3.

    NEXT

  4. RECONFIRM DTC OUTPUT (HYBRID CONTROL)

    1. Connect the Techstream 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
      P0AC0-123 is not output. A
      P0AC0-123 is output. B

    5. Turn the power switch off.

    6. Disconnect the Techstream from the DLC3.

    B

    REPLACE BATTERY SMART UNIT Click here

    A

    RECOVERY TO NORMAL