Fuel Pump; Fuel Sender Test; Fuel Pump Test - Polaris 2009 RANGER 700 Service Manual

ELECTRONIC FUEL INJECTION

FUEL PUMP

Operation Overview
NOTE: All EFI units utilize quick connect lines.
An electric fuel pump assembly is used to transfer fuel to the EFI
system from inside the fuel tank. This assembly includes the fuel
pump, regulator and fuel gauge sender. The pump is rated for a
minimum output of 25 liters per hour at 39 psi and has a non-
serviceable internal 60-micron filter.
Fuel pump is not
serviceable, picture is
for reference only.
Regulator
When the key switch is turned to "ON", the ECU activates the
fuel pump, which pressurizes the system for start-up.
The ECU switches off the pump preventing the continued
delivery of fuel in these instances:
• If the key switch is not promptly turned to the "start"
position.
• If the engine fails to start.
• If the engine is stopped with the key switch "ON" (as in
the case of an accident).
In these situations, the "check engine" light will go on, but will
turn off after 4 cranking revolutions if system function is OK.
Once the engine is running, the fuel pump remains on.
4.12
Fuel Pump
Fuel Gauge
Sender Float
Internal 60 Micron
Strainer (Bottom)

Fuel Sender Test

If the fuel gauge reading on the instrument cluster is not
working, or if the display reading differs in large comparison to
the fuel in the tank, perform a resistance test on the fuel sender.
Disconnect the fuel pump / sending unit connection and measure
the resistance between the Purple and Brown wires (see chapter
10 for further details). If out of specification, replace the fuel
pump / tank assembly.
Fuel Sender Resistance Specifications:
Full: 90
Empty: 5

Fuel Pump Test

NOTE: The fuel pump/tank
serviceable and must be replaced if determined to be
faulty. If a fuel delivery problem is suspected, make
certain the fuel pump is being activated by the ECU,
all electrical connections are properly secured, the
fuses are good, and a minimum of 7.0 volts is being
supplied. If during starting the battery voltage drops
below 7.0 volts, the ECU will fail to operate the
system.
Fuel is extremely flammable and may cause
severe burns, injury, or death.
Do not use any device that produces a flame or
electrical devices that may spark around
fuel or fuel vapors.
1. Cover the fuel line connection with a shop towel and
disconnect the fuel line from the fuel pump.
2. Install the Fuel Pressure Gauge Adaptor (PV-48656) in-line
between the fuel pump outlet and fuel line.
Ω
Ω
assembly is
WARNING
non-