Page 693 - Manual Oficina Polaris Sportsman 570 2014 a 2016

P. 693

ELECTRICAL

ELECTRONIC POWER STEERING (EPS)

EPS OPERATION WIRE COLOR FUNCTION
The EPS module is an intelligent electronic power CAN High Signal
steering system that operates off of the vehicle’s 12V YELLOW
electrical system. It calculates steering assist by sensing GREEN CAN Low Signal
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. PROPER EPS SYSTEM DIAGNOSING
The process provides a smooth, seamless assist.
READ BEFORE YOU REPLACE THE EPS UNIT!
The system is continuously running diagnostic checks
and monitoring factors such as battery voltage, ground NOTE
speed and engine speed. In the event an internal or
external issue that affects the EPS system is detected, Try to reflash the EPS unit before attempting to replace
the system will illuminate a fault indicator and transition it. A simple reflash may be all that is needed to repair
to a normal mechanically coupled steering system. The the EPS problem. Always reflash the EPS unit as the
system is Polaris Digital Wrench® compatible for first step in diagnosing an EPS problem.
simplified diagnostics and system troubleshooting
through the vehicle’s diagnostic port.
With the engine off and the key on, the power steering EPS CIRCUIT
unit will operate for up to five minutes. After the five
minutes, you will need to cycle the key switch and restart NOTE
the engine to regain power steering operation.
Refer to “Cooling Fan & EPS” breakout diagram near
The Power Steering 30A Fuse. the end of this Chapter.
• 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 EPS TORQUE OFFSET PROCEDURE
power steering operation. You will be able to connect
and communicate with the vehicle’s Engine Controller, If the steering wheel pulls to one side when the vehicle is
but not the Power Steering Controller, while using driven in a straight line and there is no damage to the
Digital Wrench®. steering or suspension components, perform the
procedure below to center the EPS steering angle sensor
NOTE (SAS) electronically.
DO NOT SPLICE OR CUT INTO THE CAN CIRCUITS. 1. On a flat surface, drive a short distance in a straight
line and stop the vehicle without touching the steering
wheel. Put the vehicle in park/lock the parking brake.
CAUTION
2. Connect the vehicle to Digital Wrench.
Electronic Power Steering (EPS) units are not
interchangeable between ATV and RANGER product 3. Click on the Special Tests menu (Red Toolbox) and
lines. select Steering Angle Sensor Calibration.
4. Click on Set SAS Zero.

NOTE
Refer to Chapter 10 “Steering / Suspension” for power
steering unit removal and installation procedures.EPS
Unit Removal, page 8.7
11

WIRE COLOR FUNCTION
Key-On / Run Switch On
ORANGE
Battery Voltage / EPS Power
RED Battery Voltage NOTE
The SAS Position should = 0.0 after clicking Set SAS
BROWN Ground
Zero.

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