CHECK AT THE BMU TERMINALS



TERMINAL VOLTAGE CHECK CHART




Terminal No.
Terminal
code
Inspection Item
Check Condition (vehicle status)
Normal Condition
1
BAT
Auxiliary battery power supply
Power supply mode of electric motor switch: OFF
System voltage
2
IGCT
IGCT power supply
Power supply mode of electric motor switch: OFF
1 V or less
Power supply mode of electric motor switch: ACC
System voltage
13
FPWM
Drive battery cooling fan PWM signal
Power supply mode of electric motor switch: ACC
1 V or less
Perform actuator test: Item No. 1 drive battery cooling fan PWM signal
Voltage is changed.
21
FRPM
Drive battery cooling fan rotational speed signal input
Power supply mode of electric motor switch: ACC
0.0 - 0.2 V
Perform actuator test: Item No. 1 drive battery cooling fan PWM signal
Voltage is changed.
35
SENS
Drive battery earth fault detector
Power supply mode of electric motor switch: OFF → ACC
Voltage is changed.
46
PRCK
Drive battery earth fault detector pre-check signal
Power supply mode of electric motor switch: OFF → ACC
Voltage is changed.

CHECK CHART FOR RESISTANCE AND CONTINUITY BETWEEN CONNECTOR TERMINALS AT HARNESS SIDE




Terminal No.
Terminal
code
Inspection Item
Standard value and normal status (check condition)
3 - body earth
GND - body earth
Earth
Continuity (less than 2 Ω)