SELVA MARINE Fin Whale 225 EFI, Service Manual

Page: 350 / 399

ELEC
Electrical system
– +
8-39
6AL3J11
Checking the low-pressure fuel
pump and high-pressure fuel pump
1. Check the fuses for continuity. Replace if
there is no continuity.
NOTE:
For the location of the fuse, see Chapter 8,
“ Fuse holder. ”
2. Check the operation of the low-pressure
fuel pump and high-pressure fuel pump
using the
“ Stationary test ” of the YDIS
and listen for the operating sound.
3. Disconnect the low-pressure fuel pump
coupler
1
and high-pressure fuel pump
coupler
2
.
4. Measure the resistance of the fuel pump
motors.
5. Connect the low-pressure fuel pump cou-
pler
1
and high-pressure fuel pump cou-
pler
2
.
Checking the high-pressure fuel
pump relay
1. Remove the high-pressure fuel pump
relay
1
and check it.
NOTE:
The high-pressure fuel pump relay and main
relay are the same type of relay. To check
the relay, see Chapter 8,
“ Checking the main
relay and electronic throttle valve relay. ”
2. Connect the tester leads to terminals
2
and
3
as shown, turn the engine start
switch to “ ON, ” and then measure the
voltage within 5 seconds after turning the
switch to
“ ON. ”
NOTE:
When the engine start switch is turned to
“ ON, ” voltage is supplied to the high-pressure
fuel pump relay and the high-pressure fuel
pump operates. After 5 seconds, the power
to the relay turns off and the fuel pump stops.
Low-pressure fuel pump resistance
1
(reference data):
1.3 – 4.0
Ω
High-pressure fuel pump resistance
2
(reference data):
0.5 – 10
Ω
S6AL8620
1 2
1
2
Terminal
2
– Terminal
3
:
12 V (battery voltage)
S6P28180
1
S6AL8630
3 2