Principal Components; Efi Operation Overview - Polaris RZR XP 1000 2014 Service Manual

FUEL SYSTEM
u
• Fuel Injectors
Located on the top of the throttle body in the intake
track, retained on top by the fuel rail.
i
• Fuel Rail / Regulator
Located on the throttle body, on top of the fuel
injectors.
• Ignition Coil / High Tension Leads
Located behind the engine service panel on the
driver's side of the vehicle.
4.8
• Fuel Pump / Regulator / Fuel Sender Assembly
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
o
• 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
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
9926816 R07 - 2014-2016 RZR XP 1000 / XP4 1000 Service Manual
during operation to
© Copyright Polaris Industries Inc.
a
maintain peak