Electronic Power-Assisted Steering; Epas Operation Overview; Epas System Diagnostics - Polaris GENERAL 2016 Service Manual

ELECTRICAL

ELECTRONIC POWER-ASSISTED STEERING

EPAS OPERATION OVERVIEW

The EPAS module is an intelligent electronic power-
assisted 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 EPAS 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
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.
NOTICE
To conserve battery power, the EPAS unit will shut
down 5 minutes after the engine has stopped if the key
remains in the ON position. At this point, the EPAS
Malfunction Indicator Light will illuminate to indicate the
EPAS has shut down and will set a fault code in Digital
Wrench®.
The Power Steering 25A / 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®.
CAUTION
DO NOT SPLICE OR CUT INTO THE CAN CIRCUITS.
IMPORTANT
Electronic Power Steering (EPS) units are not
interchangeable between ATV, RZR and RANGER
product lines.
11.76
and system troubleshooting
2–PIN CONNECTOR
WIRE COLOR
ORANGE
BROWN
8–PIN CONNECTOR
WIRE COLOR
ORANGE
YELLOW
GREEN

EPAS SYSTEM DIAGNOSTICS

READ BEFORE YOU REPLACE THE EPAS UNIT!
NOTICE
Verify the EPAS unit has the latest software version and
calibration loaded before replacing the EPAS unit. If an
older version is found using Digital Wrench, update the
software to the latest version and follow guided
diagnostic procedures available for any Digital Wrench
codes found.
9929375 R02 - 2016-2019 GENERAL / GENERAL 4 Service Manual
FUNCTION
Main Power (25A / 30A
Protected)
Ground
FUNCTION
Key-On Battery Voltage
CAN High Signal
CAN Low Signal
© Copyright Polaris Industries Inc.