Yamaha F150B, Руководство по обслуживанию

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4-12
Troubleshooting the power unit
0
1
2
3
4
5
6
7
8
9
10
A
Symptom
1: Engine will no
t star
t (engine cran
ks).
Sym
p
to
m
2
C
au
se
1
C
a
u
s
e
2
C
he
c
k
in
g
ste
p
Ref
e
r to
pa
ge
Dischar
ge
d bat
te
ry
Ba
tt
e
ry
p
e
rf
o
rma
nce de
cr
em
ent
—
Chec
k t
he ba
tt
e
ry
ca
pacit
y an
d specif
ic
gra
v
it
y.
10
-4
St
at
o
r assemb
ly
m
a
lf
unct
ion
—
Me
asur
e th
e ligh
tin
g co
il out
pu
t pe
ak v
o
lt
-
ag
e
.
5-
26
Me
asur
e th
e ligh
tin
g co
il resist
ance
.
5
-2
6
S
h
o
rt,
op
e
n
, or
lo
os
e c
o
n
n
e
c
ti
on
in
ch
ar
gin
g
ci
rc
u
it
—
Chec
k t
he ba
tt
e
ry
ca
b
le
a
nd t
e
rm
ina
ls f
o
r
pr
op
er
con
nect
ion
.
—
Chec
k t
h
e
char
gin
g
circuit
wir
ing
conn
ect
ion
an
d da
mag
e
.
A-7
En
gine
ECM do
es not
o
per
at
e
Main rela
y
malfunction
—
Chec
k t
he ma
in re
la
y.
5
-1
4
A-5
Bl
o
w
n f
u
s
e
—
Chec
k t
he f
u
se
.
5
-2
A-5
Sh
or
t,
op
en
, or
loose con
nect
ion
in
e
ngi
ne
E
C
M circuit
—
Chec
k f
o
r wir
ing
con
tin
uit
y
be
tw
ee
n th
e
ma
in re
la
y
a
nd e
ngin
e
ECM
.
5-
15
A-5
Chec
k f
o
r wir
ing
con
tin
uit
y
be
tw
ee
n th
e
en
gine
ECM an
d g
ro
u
n
d
.
5-
15
A-5
En
gin
e
ECM ma
lf
unct
ion
—
R
epla
c
e th
e eng
ine
ECM.
7
-1
5
Sp
ar
k p
lug
d
oes
no
t
spar
k (all
cy
linders)
P
u
lser coil malfunction
—
Chec
k t
he pu
lse
r coil re
sist
an
ce
.
5
-3
0
Sh
or
t,
op
en
, or
loose con
nect
ion
in
p
u
lser
c
o
il circ
uit
—
Chec
k f
o
r wir
ing
con
tin
uit
y
be
tw
ee
n th
e
pu
lse
r coil an
d eng
ine
ECM.
5-
30
A-5
Sh
or
t,
op
en
, or
loose con
nect
ion
in
ig
nit
ion
c
o
il circ
uit
—
Chec
k the igniti
on coil input
v
o
ltage
.
5-29
A-5
Chec
k f
o
r wir
ing cont
in
u
ity bet
w
e
en
t
h
e
ig
ni-
ti
on coil an
d eng
ine
ECM.
5-
29
A-5
Chec
k f
o
r wir
ing cont
in
u
ity bet
w
e
en
t
h
e
ig
ni-
ti
on coil an
d main
r
e
la
y.
5-
29
A-5