Checking The Fuel Pump; Checking The Fuel Pump Relay - APRILIA RST mille Futura 2001 Service Manual

ELECTRICAL SYSTEM

6.7.2 CHECKING THE FUEL PUMP

To check the pump operation:
Remove the lower dashboard panel, see 7.1.20
(REMOVING THE FRONT FAIRING).
Open the cover (3) of the secondary fuse box.
Make sure that the fuse (1) is intact.
Raise the fuel tank, see 2.8 (LIFTING THE FUEL
TANK).
Disconnect the four-way connector (2) located on the
left-hand side of the vehicle.
WARNING
When reassembling, make sure the connector (2) is
fitted properly.
Connect the positive (+) green (V) and negative (-) blue
(B) wires (on the pump assembly side) to a 12-VDC
battery.
Make sure that the pump works properly and emits its
usual hum. Check the pressure gauge to make sure
the intake pressure is at least 50.76 PSI (350 kPa) (3.5
bar).

6.7.3 CHECKING THE FUEL PUMP RELAY

To check the relay:
Disconnect the four-way connector (1) (white) from the
relay (2).
WARNING
When reassembling,
connector (1) is properly connected.
Connect the two internal male terminals (A-B) to a 12 V
battery.
Use a tester (in ohm meter mode) to check the
continuity between the other two terminals (C-D).
Correct value with relay energized: 0 Ω
Correct value with relay not energized: ∞ Ω
If the values do not match those indicated, replace
the relay (2).
If all components are working properly, also check:
- overturn sensor, see 6.4.4
OVERTURN SENSOR).
- Wiring is correct.
6
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make sure the electrical
(CHECKING THE
RST mille
1
2
2
1
Release 00/2002 - 03
USA
3