SELVA MARINE Fin Whale 225 EFI, Service Manual

Page: 336 / 399

ELEC
Electrical system
– +
8-25
6AL3J11
4. Turn the engine start switch to “ OFF. ”
5. Disconnect the test harness (2 pins)
1
from the neutral switch coupler (wiring
harness end) and connect it to the neu-
tral switch coupler (neutral switch end).
6. Check the neutral switch for continuity.
Replace if there is no continuity at posi-
tion
b
.
7. Disconnect the test harness (2 pins)
1
from the neutral switch coupler (blue),
and then connect the neutral switch cou-
pler (blue).
Checking the knock sensor
1. Disconnect the knock sensor coupler
1
and connect the tester leads to the sen-
sor coupler and ground.
2. Measure the knock sensor resistance.
Check the installation (ground state) of
the knock sensor if out of specification.
NOTE:
To check the installation of the knock sensor,
the cylinder head must be removed.
3. Disconnect the tester leads from the sen-
sor coupler and ground and connect the
knock sensor coupler
1
.
Checking the engine start switch
1. Disconnect the 10-pin main harness cou-
pler.
2. Check the engine start switch for continu-
ity at the 10-pin main harness coupler
(engine start switch end). Check the wir-
ing harness or replace the engine start
switch if there is no continuity.
Switch
position
Lead color
Blue/green
(L/G)
Black (B)
Free
a
Push
b
S6AL8410
L/G B
G/W
G
B L/G
B L/G
a
b
a
a
b
G/W
G
1
Knock sensor resistance:
504 – 616 k
Ω
S6AL8530
1
OFF
ON
START
OFF
ON
START
1
2
3
4
5
S6AL8890