10 ELECTRICAL SYSTEM
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10.3 PDU AND CONTROLLER LOCATIONS ________________________________________
A. Power Distribution Unit (PDU) Circuit Breakers
Used to protect electrical system. Three manual
reset circuit breakers located on the PDU are
accessible by opening the hood and looking towards
the left ROPS post. Push down on rubber boot to
reset circuit breaker.
B. Main Controller Unit (MCU) Diagnostic Lights
Twenty four lights are used to indicate active MCU
functions. Lift MCU access panel to access MCU.
C. Reel Controller Unit (RCU) Diagnostic Lights
Eighteen lights are used to indicate active RCU
functions. Remove access plug from right side of
steering column to view RCU diagnostic lights.
D. Over-Voltage Limit Module (OLM) Diagnostic
Lights (Early Units)
Six lights are used to indicate communication, power,
and energized resistors.
D. Braking Resistor Controller (BRC) (Later Units)
Remove right side operator platform cover to access
BRC.
E. Traction Controller Diagnostic Light
Single green light on traction controller indicates
power and faults. A steady light indicates the
controller is active. A flashing light indicates a
traction system fault/error has occurred. Remove
right side operator platform cover to access traction
controller.
F. Steering Controller Diagnostic Light
Single green light on steering controller indicates
power and faults. A steady light indicates the
controller is active. A flashing light indicates a
steering system fault/error has occurred. Open the
hood and remove controller cover to access the
steering controller.
G. 3WD Controller Diagnosic Light
Single green light on 3WD controller indicates power
and faults. A steady light indicates the controller is
active. A flashing light indicates a 3WD system fault/
error has occurred. Open the hood and remove
controller cover to access the 3WD controller.
Figure 10A
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