Code No. P1A82: CMU01 module temperature sensor abnormal, P1A83: CMU02 module temperature sensor abnormal, P1A84: CMU03 module temperature sensor abnormal, P1A85: CMU04 module temperature sensor abnormal, P1A86: CMU05 module temperature sensor abnormal, P1A87: CMU06 module temperature sensor abnormal, P1A88: CMU07 module temperature sensor abnormal, P1A89: CMU08 module temperature sensor abnormal, P1A8A: CMU09 module temperature sensor abnormal, P1A8B: CMU10 module temperature sensor abnormal, P1A8C: CMU11 module temperature sensor abnormal, P1A8D: CMU12 module temperature sensor abnormal

TROUBLE JUDGMENT

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.

P1AA8: Local CAN (for main battery) signal time-out
U1082: Local CAN (for main battery) bus off

Judgement Criterion

The signal is received from the appropriate module CMU, which shows that one of the module temperatures has an invalid value.

FAIL-SAFE AND BACKUP FUNCTION

If the CMU detecting abnormalities also detects the battery cell voltage sensor abnormalities, drive the main battery cooling fan for 10 minutes.

PROBABLE CAUSES

The module (battery cell, CMU and module temperature sensor) in the main battery is failed.
The BMU is failed.

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

Check the data list reference table corresponding to the diagnosis code (Refer to ).

note

To precisely judge the diagnose, do not perform the diagnosis at the temperature of 10° around the main battery.

OK: Not 10°C (initial value) (electric motor switch: "LOCK" (OFF) → ON)

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 ).

	Go to Step 2 .

STEP 2. After replacing the main battery, reconfirm the diagnosis code.

After replacing the main battery, reconfirm whether the diagnosis codes are set.

Q. Is the diagnosis code set?

	Replace the BMU.

	Check end.