Yamaha F225F, Service Manual

Page: 137 / 576

4-12
Troubleshooting the power unit
0
1
2
3
4
5
6
7
8
9
10
A
73
Oil c
o
ntrol v
a
lv
e
(STBD) malfunc- tio
n
Ir
re
g
u
lar
lo
ad
cu
rr
ent
v
a
lue
C/
E
D
eg
ra
ded
a
c
ce
ler
a
tio
n
per
fo
rm
ance
Declining maxim
u
m engine s
p
eed
<E
ng
ine
s
p
e
e
d
s
do
n
o
t sy
nc
hr
o-
niz
e
>
—
Che
c
k t
h
e
O
C
V op
er
a
tio
n using
th
e YDIS
.
5-
32
Me
asur
e t
he OCV inp
u
t
v
o
lta
g
e
.
5-
32
Me
asur
e t
he OCV re
sist
an
ce
.
5
-3
2
Chec
k
f
o
r
wir
ing c
o
ntin
uity
b
e
tw
ee
n t
he OCV and
th
e main
re
la
y.
5-
32
A-3
Chec
k
f
o
r
wir
ing c
o
ntin
uity
b
e
tw
ee
n t
he OCV and
th
e
e
ngin
e
ECM
.
5-
32
A-3
Ch
ec
k
th
e
OC
V filt
er
.
7
-5
3
74
Oil c
o
ntrol v
a
lv
e
(POR
T)
malf
un
c-
tio
n
Ir
re
g
u
lar
lo
ad
cu
rr
ent
v
a
lue
C/
E
D
eg
ra
ded
a
c
ce
ler
a
tio
n
per
fo
rm
ance
Declining maxim
u
m engine s
p
eed
<E
ng
ine
s
p
e
e
d
s
do
n
o
t sy
nc
hr
o-
niz
e
>
—
Che
c
k t
h
e
O
C
V op
er
a
tio
n using
th
e YDIS
.
5-
32
Me
asur
e t
he OCV inp
u
t
v
o
lta
g
e
.
5-
32
Me
asur
e t
he OCV re
sist
an
ce
.
5
-3
2
Chec
k
f
o
r
wir
ing c
o
ntin
uity
b
e
tw
ee
n t
he OCV and
th
e main
re
la
y.
5-
32
A-3
Chec
k
f
o
r
wir
ing c
o
ntin
uity
b
e
tw
ee
n t
he OCV and
th
e
e
ngin
e
ECM
.
5-
32
A-3
Ch
ec
k
th
e
OC
V filt
er
.
7
-5
3
86
Immobiliz
er
C
o
mm
unic
ation
err
o
r
C/
E
D
eclining
maxim
u
m en
gin
e
sp
ee
d
—
Chec
k
that the Y
-COP is
con-
n
e
cte
d
pr
ope
rl
y.
3-
21
Me
asur
e t
he Y
-CO
P
in
pu
t v
o
lt
-
ag
e
.
5-
54
11
2
11
4
Ele
c
tr
o
n
ic
th
ro
t-
tl
e syst
em
mal-
fu
nct
ion
Throttle v
a
lv
e
malfunc
tion
C/E
High engine idle speed Thr
o
tt
le do
es
n
o
t ope
ra
te
<Dif
fe
rence in
e
ngin
e
idle
spe
e
d
s
>
<E
ng
ine
s
p
e
e
d
s
do
n
o
t sy
nc
hr
o-
niz
e
>
En
gin
e
sp
ee
d
is
se
t
at
app
ro
xim
a
te
ly
150
0 r/
min
.
Rep
lace t
he en
gin
e
ECM.
7-
32
Tr
o
u
b
le
code
It
em
C
o
n
d
it
ion
L
A
N ga
uge
dis
p
la
y
Sym
p
to
m
R
ema
rks
Chec
king
st
ep
s
S
ee
p
age