Polaris RANGER 1000 2020, Service Manual

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5
9850045 R01 - 2020-2021 RANGER 1000 Service Manual
© Copyright Polaris Inc.
5.17
FUEL PRESSURE TEST
If a fuel delivery problem is suspected, make certain the
fuel pump pickup filter in the tank is not plugged, that the
fuel pump relay 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.
WARNING
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. Remove the driver seat from the vehicle.
2. Remove the storage bin underneath the drivers seat
to gain access to fuel pump.
3. Disconnect the fuel line quick-disconnect fitting.
4. Cover the fuel supply line connection at the fuel tank
with a shop towel and disconnect the supply line from
the fuel pump outlet.
5. Install the Fuel Pressure Gauge Adapter in-line
between the fuel pump outlet and fuel supply line.
Fuel Pressure Gauge Adapter:
PA-48838
6. Connect the hose from the Fuel Pressure Gauge Kit
to the test valve on the Fuel Pressure Gauge Adapter.
Route clear hose into a portable gasoline container or
the vehicle’s fuel tank.
Fuel Pressure Gauge Kit:
PU-43506-A
7. Turn on key switch to activate the pump and check
the system pressure on the gauge. If proper system
pressure 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.
Fuel Pressure:
58 ± 2 psi (400 ± 14 kPa)
NOTICE
If the fuel pressure is out of specification, replace the
fuel pump assembly.
8. If the pump did not activate , 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.
FUEL SYSTEM