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4.8
9926816 R07 - 2014-2016
RZR
XP 1000 / XP4 1000 Service Manual
© Copyright Polaris Industries Inc.
•
Fuel Injectors
u
Located on the top of the throttle body in the intake
track, retained on top by the fuel rail.
•
Fuel Rail / Regulator
i
Located on the throttle body, on top of the fuel
injectors.
•
Ignition Coil / High Tension Leads
o
Located behind the engine service panel on the
driver’s side of the vehicle.
•
Fuel Pump / Regulator / Fuel Sender Assembly
a
Under the passenger seat.
PRINCIPAL COMPONENTS
The Electronic Fuel Injection (EFI) system is a complete
engine fuel and ignition management design. This
system includes the following principal components:
• Check Engine Light
• Crankshaft Position Sensor (CPS)
• Dual Throttle Body / lntake Adapter
• Engine Control Unit (ECU)
• Engine Coolant Temperature Sensor (ECT)
• Fuel Filter(s)
• Fuel Injectors
• Fuel Pressure Regulators
• Fuel Pump
• Fuel Rail
• Fuel Supply/Return Lines
• Idle Air Control Valve (IAC)
• Ignition Coil
• Temperature and Manifold Pressure Sensor (TMAP)
• Wire Harness Assembly
EFI OPERATION OVERVIEW
The EFI system is designed to provide peak engine
performance with optimum fuel efficiency and lowest
possible emissions. The ignition and injection functions
are electronically controlled, monitored and continually
corrected
during
operation
to
maintain
peak
performance.
The central component of the system is the Bosch ME17
Electronic Control Unit (ECU) which manages system
operation, determining the best combination of fuel
mixture and ignition timing for the current operating
conditions.
An electric fuel pump is used to move fuel from the tank,
through the fuel supply line, to the fuel rail. Fuel pressure
regulators located in the tank and on the end of the fuel
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