Cell Monitoring Unit CMU Data List

CMU DATA LIST REFERENCE TABLE

 


Display on M.U.T.-III
Item No.
Inspection item
Inspection conditions
Normal value judgement
Cell Monitor IC 12 Battery cell monitor IC Electric motor switch: ON Normal
Voltage sensor 13 Voltage sensor Electric motor switch: ON Normal
Reference low voltage 14 Reference low voltage Electric motor switch: ON Normal
Reference high voltage 15 Reference high voltage Electric motor switch: ON Normal
Temperature sensor 1 (open) 16 Temperature sensor 1 (open) Electric motor switch: ON Normal
Temperature sensor 2 (open) 17 Temperature sensor 2 (open) Electric motor switch: ON Normal
Temperature sensor 3 (open) 18 Temperature sensor 3 (open) Electric motor switch: ON Normal
Temperature sensor 4 (open)*1 19 Temperature sensor 4 (open) Electric motor switch: ON Normal
Temperature sensor 5 (open)*1 20 Temperature sensor 5 (open) Electric motor switch: ON Normal
Temperature sensor 6 (open)*1 21 Temperature sensor 6 (open) Electric motor switch: ON Normal
Temperature sensor 1 (short) 22 Temperature sensor 1 (short) Electric motor switch: ON Normal
Temperature sensor 2 (short) 23 Temperature sensor 2 (short) Electric motor switch: ON Normal
Temperature sensor 3 (short) 24 Temperature sensor 3 (short) Electric motor switch: ON Normal
Temperature sensor 4 (short)*1 25 Temperature sensor 4 (short) Electric motor switch: ON Normal
Temperature sensor 5 (short)*1 26 Temperature sensor 5 (short) Electric motor switch: ON Normal
Temperature sensor 6 (short)*1 27 Temperature sensor 6 (short) Electric motor switch: ON Normal
Cell A voltage underflow 28 Battery cell A voltage underflow Electric motor switch: ON Normal
Cell B voltage underflow 29 Battery cell B voltage underflow Electric motor switch: ON Normal
Cell C voltage underflow 30 Battery cell C voltage underflow Electric motor switch: ON Normal
Cell D voltage underflow 31 Battery cell D voltage underflow Electric motor switch: ON Normal
Cell E voltage underflow*1 32 Battery cell E voltage underflow Electric motor switch: ON Normal
Cell F voltage underflow*1 33 Battery cell F voltage underflow Electric motor switch: ON Normal
Cell G voltage underflow*1 34 Battery cell G voltage underflow Electric motor switch: ON Normal
Cell H voltage underflow*1 35 Battery cell H voltage underflow Electric motor switch: ON Normal
Cell A voltage overflow 36 Battery cell A voltage overflow Electric motor switch: ON Normal
Cell B voltage overflow 37 Battery cell B voltage overflow Electric motor switch: ON Normal
Cell C voltage overflow 38 Battery cell C voltage overflow Electric motor switch: ON Normal
Cell D voltage overflow 39 Battery cell D voltage overflow Electric motor switch: ON Normal
Cell E voltage overflow*1 40 Battery cell E voltage overflow Electric motor switch: ON Normal
Cell F voltage overflow*1 41 Battery cell F voltage overflow Electric motor switch: ON Normal
Cell G voltage overflow*1 42 Battery cell G voltage overflow Electric motor switch: ON Normal
Cell H voltage overflow*1 43 Battery cell H voltage overflow Electric motor switch: ON Normal
Temperature sensor 1 underflow 44 Temperature sensor 1 underflow Electric motor switch: ON Normal
Temperature sensor 2 underflow 45 Temperature sensor 2 underflow Electric motor switch: ON Normal
Temperature sensor 3 underflow 46 Temperature sensor 3 underflow Electric motor switch: ON Normal
Temperature sensor 4 underflow*1 47 Temperature sensor 4 underflow Electric motor switch: ON Normal
Temperature sensor 5 underflow*1 48 Temperature sensor 5 underflow Electric motor switch: ON Normal
Temperature sensor 6 underflow*1 49 Temperature sensor 6 underflow Electric motor switch: ON Normal
Temperature sensor 1 overflow 50 Temperature sensor 1 overflow Electric motor switch: ON Normal
Temperature sensor 2 overflow 51 Temperature sensor 2 overflow Electric motor switch: ON Normal
Temperature sensor 3 overflow 52 Temperature sensor 3 overflow Electric motor switch: ON Normal
Temperature sensor 4 overflow*1 53 Temperature sensor 4 overflow Electric motor switch: ON Normal
Temperature sensor 5 overflow*1 54 Temperature sensor 5 overflow Electric motor switch: ON Normal
Temperature sensor 6 overflow*1 55 Temperature sensor 6 overflow Electric motor switch: ON Normal
EEPROM Fail (Numbering data read) 56 EEPROM abnormalities (read numbering data) Electric motor switch: ON Normal
EEPROM Fail (Learning data read) 57 EEPROM abnormal (read learning data) Electric motor switch: ON Normal
CAN controller 58 CAN controller Electric motor switch: ON Normal
A/D conversion (Reference volt) 67 Microcomputer AD conversion (reference voltage) Electric motor switch: ON Normal
A/D conversion (temp. sensor 1) 68 Microcomputer AD conversion (temperature sensor 1) Electric motor switch: ON Normal
A/D conversion (temp. sensor 2) 69 Microcomputer AD conversion (temperature sensor 2) Electric motor switch: ON Normal
A/D conversion (temp. sensor 3) 70 Microcomputer AD conversion (temperature sensor 3) Electric motor switch: ON Normal
A/D conversion (temp. sensor 4)*1 71 Microcomputer AD conversion (temperature sensor 4) Electric motor switch: ON Normal
A/D conversion (temp. sensor 5)*1 72 Microcomputer AD conversion (temperature sensor 5) Electric motor switch: ON Normal
A/D conversion (temp. sensor 6)*1 73 Microcomputer AD conversion (temperature sensor 6) Electric motor switch: ON Normal
A/D conversion (Module voltage) 74 Microcomputer AD conversion (module voltage) Electric motor switch: ON Normal
Balancer driving time fail (20 h) 75 Balancer driving time abnormal (20 hours) Electric motor switch: ON Normal
note *1: If the CMU 6 or CMU 12 is selected from the system selection screen of the M.U.T.-III, the data item should be displayed. But it does not use for the check because it is not arailable.

CMU monitoring items

  • Available items are established for these items to see the CMU control status.
  • These items are difficult to clearly show the specification value because the values much vary depending on the slight difference in the measuring conditions, in the environment or in the chronological change of the vehicle.The check conditions, displayed ranges and value variations are described.
Display on M.U.T.-III
Item No.
M.U.T.-III display descriptions
Standards at each check
Displayed range and value
Module voltage 1 Terminal voltage of main battery module is displayed. Electric motor switch: ON 0 – 40 V
Cell total voltage 2 Each battery cell total voltage composing main battery module is shown. Electric motor switch: ON 0 – 40 V
Voltage diff. (Module – Total cell) 3 Difference is shown between module voltage and total voltage of battery cell. Electric motor switch: ON 0 – 40 V
Cell A voltage 4 Battery cell voltage is shown. Electric motor switch: ON 0 – 5 V
Cell B voltage 5
Cell C voltage 6
Cell D voltage 7
Cell E voltage*1 8
Cell F voltage*1 9
Cell G voltage*1 10
Cell H voltage*1 11
note *1: If CMU6 or CMU12 is selected from the M.U.T.-III system selection screen, nothing displays.

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