12.32
ELECTRICAL
ELECTRONIC POWER STEERING (EPS)
Electronic Power Steering (EPS) Circuits
EPS Operation
The EPS module is an intelligent electronic power steering
system that operates off of the vehicle’s 12V electrical system.
It calculates steering assist by sensing the difference between
the input torque of the steering post and the output torque
required to turn the wheels, and then provides assist by
energizing an electric motor. The process provides a smooth,
seamless assist.
The system is continuously running diagnostic checks and
monitoring factors such as battery voltage, ground speed and
engine speed. In the event an internal or external issue that
affects the EPS system is detected, the system will illuminate a
fault indicator and transition to a normal mechanically coupled
steering system. The system is Polaris Digital Wrenchâ„¢
compatible for simplified diagnostics and system
troubleshooting through the vehicle’s diagnostic port.
With the engine off and the key on, the power steering unit will
operate for up to five minutes. After the five minutes, you will
need to either cycle the key switch or start the engine to regain
power steering operation.
The Power Steering 30A Fuse.
• If the fuse fails, the Power Steering Malfunction
Indicator Light (MIL) on the instrument cluster will
illuminate. During this time, the vehicle will have no
power steering operation. You will be able to connect
and communicate with the vehicle’s Engine Controller,
but not the Power Steering Controller, while using
Digital Wrenchâ„¢.
Wire Color Functions
Wire Color Function
ORANGE
Key-On / Run Switch On Battery
Voltage
EPS Power
RED Battery Voltage
BROWN Ground
YELLOW CAN High Signal
GREEN CAN Low Signal
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