Engine Controller Reprogramming (Reflash) - Polaris RANGER XP 900 2018-2019 Service Manual

ENGINE CONTROLLER REPROGRAMMING
(REFLASH)
Process Overview
The reprogramming feature is in the Special Tests menu
on the Digital Wrench® screen. Start Digital Wrench®
and click on the Special Tests menu icon (red tool box). A
technician should be familiar with the process and with
computer operation in general before attempting to
reprogram an ECU.
The Digital Wrench® Engine Controller Reprogramming
(or "Reflash") feature allows reprogramming of the ECU
fuel and ignition map. To successfully reprogram the
ECU, an Authorization Key must be obtained by entering
a Request Code in the box provided on the Reflash
Authorization site. The Request Code is automatically
generated by Digital Wrench® during the reprogramming
process. The Reflash Authorization site is located under
the "Service and Warranty" drop down menu on the
dealer website at: www.polarisdealers.com.
NOTICE
Failure to follow the reprogramming instructions
completely and correctly can result in an engine that
does not run! Replacement ECUs are programmed as
"no-start" and require a reflash for them to work.
Reprogramming (Reflash) Tips:
• BATTERY VOLTAGE: The majority of problems with
reprogramming can be attributed to a low battery. Be
sure the battery voltage (no load) is at least 12.8 volts
and at least 12.5 volts with the key 'ON'. Connect a
battery charger if necessary to bring voltage level
above minimum. Fully charge the battery before you
attempt to reprogram.
• DEDICATED LAPTOP: Best results are obtained using
a laptop computer that is "dedicated to Digital
Wrench®. A laptop that is used by a variety of people
and in several applications around the dealership is
more likely to cause a reprogramming problem than
one dedicated to Digital Wrench® diagnostics only.
• OBTAINING THE LATEST UPDATE: Reprogramming
updates are provided periodically and contain the most
recent calibrations. Refer to "Digital Wrench®
Updates"page 4.44 procedure.
• CLOSE NON-ESSENTIAL PROGRAMS: Polaris
recommends that you DO NOT install non-essential
programs on a Service Department laptop. Camera
detection software, Virus Scanners, Tool Bars, etc.
may clog up memory if running in the background and
make it harder for the diagnostic software to operate.
9929399 R01 - 2018-2019 RANGER XP/ CREW 900/1000 Service Manual
© Copyright Polaris Industries Inc.
• KNOW THE PROCESS: If you are not familiar with the
entire reprogramming process, review the HELP
section of the diagnostic software before you attempt
reprogramming. Click on the ? on the tool bar or press
F11. The information in the on-line help is the most
current and complete information available. This
should be your first step until you are familiar with the
process.
• COMMUNICATION PROBLEMS: If you have had
problems communicating with a vehicle while
performing diagnostic functions, do not attempt
reprogramming until the cause has been identified and
fixed. Check all connections, and be sure battery
voltage is as specified.
• Proceed to http://polaris.diagsys.com for specific
information and FAQs on how to troubleshoot
communication problems.
• DON'T DISTURB THE PC: While reprogramming is in
progress, don't move the mouse and don't touch the
keyboard. The process only takes a few minutes, and
is best left alone until complete.
Reprogramming (Reflash) Procedure:
If you are not familiar with the reprogramming process,
review the "Reprogramming (Reflash) Tips" before you
begin. Follow the on-screen instructions as you progress
through the steps. If you encounter a problem, always
check the On-Line help for current tips and information.
1. Verify the most current update has been downloaded
and loaded into Digital Wrench®. See "Digital
Wrench® Version and Update ID"page 4.44
FUEL SYSTEM
4
4.47