Fuel Pump Test - Polaris RZR 900 2017 Service Manual

FUEL SYSTEM
6. If none of the conditions exist, the fuel sender
assembly is faulty. Replace the fuel pump assembly.
Refer to Fuel Pump Replacement procedure.

FUEL PUMP TEST

If a fuel delivery problem is suspected, make certain the
fuel pump filters are not plugged, that the pump is being
activated through 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
1. Remove the passenger seat from the vehicle.
2. Cover the fuel line connection at the fuel tank with a
shop towel and disconnect the line from the fuel
pump outlet.
3. Install the Fuel Pressure Gauge Adapter (PV-48656)
in-line between the fuel pump outlet and fuel line.
Fuel Gauge Adapter (RZR 900): PV-48656
Fuel Gauge Adapter (RZR S 1000): PA-48838
4. Connect the hose from the Fuel Pressure Gauge Kit
(PU-43506-A) to the test valve on the Fuel Pressure
Gauge Adapter. Route clear hose into a portable
gasoline container or the vehicle's fuel tank.
5. Turn on key switch to activate the pump and check
the system pressure on the gauge. If system pressure
of 58 ± 2 psi (400 ± 14 kPa) 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.
5.24
WARNING
vapors.
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.
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.
If there was no continuity between the pump terminals,
replace the fuel pump assembly.
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.
If the pump starts, repeat steps 3, 4 and 5 to verify
9930588 R02 - 2017-2020 RZR 900 900/S 900/S4 1000/S 1000/S4 Service Manual
NOTICE
NOTICE
NOTICE
correct pressure.
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