Code No. No. P1AAB: Numbers Of Cells Abnormal




TROUBLE JUDGEMENT


Check Conditions
  • The power supply mode of the electric motor switch is ON, or the drive battery starts to be charged
Judgement Criterion
  • The abnormal number of the cell is detected.

FAIL-SAFE AND BACKUP FUNCTION



  • Not available

PROBABLE CAUSES



  • Numbering the CMU ID is not performed.
  • The BMU or the drive battery is incorrectly installed.

DIAGNOSIS PROCEDURE


STEP 1. Perform numbering the CMU ID.



  • Using the M.U.T-III, perform the numbering CMU ID. Check that the ID is numbered to the CMU.

Q. Is the diagnosis code stored?

Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
Go to Step 2.

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


Q. Is the diagnosis code stored?

Go to Step 3.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).

STEP 3. Replace the BMU.



  • After replacing the BMU, reconfirm whether the diagnosis code is stored.

Q. Is the diagnosis code stored?

Replace the drive battery.
Check end