Code No. P1A6A: CMU01 module temperature abnormal (high input), P1A6B: CMU02 module temperature abnormal (high input), P1A6C: CMU03 module temperature abnormal (high input), P1A6D: CMU04 module temperature abnormal (high input), P1A6E: CMU05 module temperature abnormal (high input), P1A6F: CMU06 module temperature abnormal (high input), P1A70: CMU07 module temperature abnormal (high input), P1A71: CMU08 module temperature abnormal (high input), P1A72: CMU09 module temperature abnormal (high input), P1A73: CMU10 module temperature abnormal (high input), P1A74: CMU11 module temperature abnormal (high input), P1A75: CMU12 module temperature abnormal (high input)


TROUBLE JUDGEMENT
Check Conditions
  • 3 seconds elapse after the electric motor switch is turned ON, or 3 seconds elapse after the main battery starts to be charged.
  • None of the following diagnosis codes occur at the same time.

  1. P1AA8: Local CAN (for main battery) signal time-out
  2. U1082: Local CAN (for main battery) bus off
Judgement Criterion
  • The module temperature is more than 60°C.

FAIL-SAFE AND BACKUP FUNCTION

  • Drive the main battery cooling fan for 10 minutes after judging malfunctions.

PROBABLE CAUSES

  • The main battery cooling is insufficient with the failed air conditioner control system.
  • The module (battery cell, CMU and module temperature sensor) in the main battery is failed.

DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III other system diagnosis code.

Q. Is diagnosis code of compressor & heater controller set?
Check the compressor & heater controller. (Refer to GROUP 55 - Troubleshooting - Diagnosis Code Chart <Compressor & heater controller> ).
Go to Step 2 .

STEP 2. M.U.T.-III data list

  • Check the data list reference table corresponding to the diagnosis code (Refer to ).
OK: At ambient temperature (atmospheric temperature) or equivalent (when the vehicle driving and the charge are not performed for a long time)

Q. Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
Replace the main battery.