Code No. P1AC6: Voltage Of Each Battery Cell Abnormal (LO side)




TROUBLE JUDGEMENT


Check Conditions
  • 3 seconds elapse after the electric motor switch is turned "ON", or 3 seconds elapse after the traction battery starts to be charged.
  • The absolute value of the current is less than 1 A.
  • The energy level gauge is more than 12 segments.
  • None of the following diagnosis codes occur at the same time.

    1. P1AA8: Local CAN (for traction battery) signal time-out
    2. U1082: Local CAN (for traction battery) bus off
Judgement Criterion
  • Difference in voltage values each battery cell is more than 0.05 V.

FAIL-SAFE AND BACKUP FUNCTION



  • Not available

PROBABLE CAUSE



  • The module (battery cell and CMU) in the traction battery is failed.

DIAGNOSIS PROCEDURE


STEP 1. Traction battery condition check


Q. Does replace the module in the traction battery recently?

Erase the diagnosis code, check end.
Go to Step 2.

STEP 2. M.U.T.-III diagnosis code


Reconfirm whether the diagnosis codes are set from BMU.

  1. Erase the diagnosis codes being set.
  2. Electric motor switch: "LOCK" (OFF) → "ON"
  3. After 10 seconds, also the energy level gauge of the combination meter confirm more than 12 segments.

Q. Is the diagnosis code set?

Replace the traction battery.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).




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