BATTERY MANAGEMENT UNIT (BMU)




The battery management unit (BMU) is placed right side rear wheel house inner panel. The BMU uses the information from the CMU or the sensor to know the drive battery condition. The BMU sends the information to the PHEV-ECU through the CAN communication. The LIN communication is provided for the backup.
Terminal No.
Terminal code
Terminal name
Terminal No.
Terminal code
Terminal name
1
BAT
Auxiliary battery power source
2
IGCT
IGCT power source
3
GND
BMU earth
6
CANH
CAN interface (high)
7
CANL
CAN interface (low)
13
FPWM
Drive battery cooling fan PWM signal
21
FRPM
Input signal for drive battery cooling fan speed
35
SENS
Drive battery ground fault detector
37
CNBH
Local CAN (for drive battery) interface (high)
38
CNBL
Local CAN (for drive battery) interface (low)
39
KLNC
Sub LIN (for drive battery)
46
PRCK
Drive battery ground fault detector pre-check signal
48
AUIN
CMU ID automatic number input signal
49
AUOT
CMU ID automatic number output signal
Input and output pin configuration of BMU connector