Efi Service Notes - Polaris RANGER XP 900 2013 Manual

EFI SERVICE NOTES

• For more convenient and accurate testing of EFI
components, it is recommended dealers utilize the
Digital Wrench® Diagnostic Software (dealer only).
Some testing may be done manually using the
procedures provided in this chapter.
• 80% of all EFI problems are caused by wiring
harness connections.
• For the purpose of troubleshooting difficult running
issues, a known-good ECU from another RANGER XP
900 of the same model and year may be used without
damaging system or engine components.
• Never attempt to service any fuel system component
while engine is running or ignition switch is "on."
• Cleanliness is essential and must be maintained at all
times when servicing or working on the EFI system.
Dirt, even in small quantities, can cause significant
problems.
• Do not use compressed air if the system is open.
Cover any parts removed and wrap any open joints
with plastic if they will remain open for any length of
time. New parts should be removed from their
protective packaging just prior to installation.
• Clean any connector before opening to prevent dirt
from entering the system.
9924880 Rev 2- 1/10/2014 - 2013 / 2014 RANGER XP 900 - 2014 RANGER XP 900 / CREW 900 Service Manual
© Copyright Polaris Sales Inc.
FUEL SYSTEM - GENERAL
• Although every precaution has been taken to prevent
water intrusion failure, avoid direct water or spray
contact with system components.
• Do not disconnect or reconnect the wiring harness
connector to the control unit or any individual
components with the ignition "on." This can send a
damaging voltage spike through the ECU.
• Do not allow the battery cables to touch opposing
terminals. When connecting battery cables attach the
positive (red) cable to positive (+) battery terminal first,
followed by negative (black) cable to negative (-)
battery terminal.
• Never start the engine when the cables are loose or
poorly connected to the battery terminals.
• Never disconnect battery while engine is running.
• Never use a battery boost-pack to start the engine.
• Do not charge battery with key switch "on."
• Always disconnect negative (-) battery cable lead
before charging battery.
• Always unplug ECU from the wire harness before
performing any welding on the unit.
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