Fuel Pump Replacement - Polaris RANGER 500 2017 Service Manual

FUEL SYSTEM
5. Turn on the key switch to activate the pump and
check the system pressure on the gauge. If system
pressure of 58 ± 2 psi is observed, the ignition switch,
ECU, fuel pump, and pressure regulator are working
properly. Turn the key switch off and depress the
valve button on the tester to relieve the system
pressure.
Normal Fuel Pressure:
58 ± 2 psi (400 ± 14 kPa)
NOTICE
If the fuel pressure is out of specification, replace the
fuel pump assembly.
6. If the pump did not activate (Step 5), disconnect the
harness connector from the fuel pump. Connect a DC
voltmeter across terminals "3" and "4" in the plug on
the vehicle fuel pump harness. Turn on the key switch
and observe voltage to ensure a minimum of 7 volts is
present.
NOTICE
If the voltage was below 7 VDC, test the battery, ignition
switch, relay(s), wiring harness and ECU.
7. If the reading is between 7 and 14 volts, turn key
switch off and connect an ohmmeter between
terminals "3" and "4"' at the white fuel pump
connector to check for continuity within the fuel pump.
NOTICE
If there was no continuity between the pump terminals,
replace the fuel pump assembly.
5.18
8. If voltage at the plug was within the specified range,
and there was continuity across the pump terminals,
reconnect the plug to the fuel pump, making sure you
have a clean connection. Turn on the key switch and
listen for the pump to activate.
NOTICE
If the pump starts, repeat steps 3, 4 and 5 to verify
correct pressure.
9. If the pump still does not operate, check for correct
ECU operation by plugging in a known-good ECU of
the same model.
NOTICE
If the pump still does not operate, replace the fuel pump
assembly.

FUEL PUMP REPLACEMENT

Gasoline is extremely flammable and explosive under
certain conditions.
Always stop the engine and refuel outdoors or in a well
ventilated area.
Do not smoke or allow open flames or sparks in or near
the area where refueling is performed or where
gasoline is stored.
Do not overfill the tank. Do not fill the tank neck.
If you get gasoline in your eyes or if you swallow
gasoline, seek medical attention immediately. Do not
induce vomiting.
If you spill gasoline on your skin or clothing,
immediately wash it off with soap and water and
change clothing.
Never start the engine or let it run in an enclosed area.
Engine exhaust fumes are poisonous and can result
loss of consciousness or death in a short time.
Never drain the fuel when the engine is hot. Severe
burns may result.
Always wear safety goggles when working with high
pressure or flammable fluids. Failure to do so could
result in serious injury or complications.
9850043 R01 - 2017-2021 RANGER 500 / 570 Service Manual
WARNING
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