Electronic Power Steering (Eps); Eps Operation - Polaris Sportsman 850 Service Manual

ELECTRONIC POWER STEERING (EPS)

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 Wrench 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 cycle the key switch and restart
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 Wrench™.
NOTE
DO NOT SPLICE OR CUT INTO THE CAN CIRCUITS.
WARNING
Electronic Power Steering (EPS) units are not
interchangeable between ATV and RANGER product
lines.
NOTE
Refer to Chapter 10 "Steering / Suspension" for power
steering unit removal and installation procedures.
WIRE COLOR FUNCTION
Key-On / Run Switch On
ORANGE
Battery Voltage / EPS Power
Battery Voltage
RED
BROWN Ground
CAN High Signal
YELLOW
CAN Low Signal
GREEN
ELECTRICAL
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