Yamaha F225F, Service Manual

Page: 136 / 576

4-11
TRBL
SHTG
Troubleshooting
37
In
ta
k
e
air
pas-
sa
ge
ma
lf
unct
ion
Air
leak
C/
E
High en
gin
e
idle spe
e
d
Impos
s
ib
le to s
h
ift-in (*1)
Sh
ift-
cu
to
ut
co
n
tro
l (
*2)
O
v
er
-r
e
v
olu
tio
n
at
fu
ll th
ro
tt
le
<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
>
(*1
) When
t
h
e
e
n
g
in
e sp
ee
d is
mor
e
than
150
0
r/
min.
(*2) Control is v
a
lid at trolling
position only
.
Ch
ec
k
th
e
ga
sk
e
ts
of
th
e
int
a
k
e
ma
nif
o
ld
s
, s
u
rg
e
t
a
n
k
,
an
d
th
ro
t-
tl
e bo
dy
.
6-
14
Che
c
k t
h
e
h
o
se be
tw
een
t
h
e
v
a
p
o
r
sh
ut
-o
ff
v
a
lv
e an
d th
e
su
rg
e ta
nk
.
6-
20
Che
c
k t
h
e
v
a
cu
um ho
se
s
.
6-
20
39
Oil pr
ess sen
s
o
r
malfunc
tion
Out
of
sp
ecifica-
tio
n
C/E
High engine idle speed <Dif
fe
rence in
e
ngin
e
idle
spe
e
d
s
>
—
Che
c
k th
e
oil pre
s
su
re
using th
e
YDIS
.
7-
1
Me
asur
e t
he o
il
p
re
s
su
re sen
s
o
r
in
put
v
o
lt
age
.
5-
33
Me
asur
e t
he o
il
p
re
s
su
re sen
s
o
r
o
u
tput
v
o
lt
ag
e
.
5-
33
Chec
k
f
o
r
wir
ing c
o
ntin
uity
be
twe
e
n
th
e
oil
pr
es
sur
e
se
ns
or
a
nd t
he e
ngin
e
ECM
.
5-
33
A-3
71
Ca
m posit
ion
se
nsor
(
S
TBD
INT) malfunc
tion
Ir
re
gula
r sign
al
C/
E
High en
gin
e
idle spe
e
d
Deg
ra
ded
a
c
ce
ler
a
tio
n
per
fo
rm
ance
Declining maxim
u
m engine s
p
eed
<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
>
—
Me
asur
e t
he cam po
sitio
n
se
n-
sor
inpu
t v
o
lt
ag
e
.
5-
49
Me
asur
e t
he cam po
sitio
n
se
n-
sor
out
pu
t v
o
lt
ag
e
.
5-
49
Chec
k
f
o
r
wir
ing c
o
ntin
uity
b
e
tw
ee
n t
he cam po
sitio
n
se
n-
so
r
a
n
d
th
e en
gin
e
ECM
.
5-
49
A-3
Ch
ec
k
th
e
br
im
o
f
th
e c
a
m
s
h
a
ft.
7
-4
7
72
Ca
m posit
ion
se
nsor
(
P
OR
T
INT) malfunc
tion
Ir
re
gula
r sign
al
C/
E
High en
gin
e
idle spe
e
d
Deg
ra
ded
a
c
ce
ler
a
tio
n
per
fo
rm
ance
Declining maxim
u
m engine s
p
eed
<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
>
—
Me
asur
e t
he cam po
sitio
n
se
n-
sor
inpu
t v
o
lt
ag
e
.
5-
49
Me
asur
e t
he cam po
sitio
n
se
n-
sor
out
pu
t v
o
lt
ag
e
.
5-
49
Chec
k
f
o
r
wir
ing c
o
ntin
uity
b
e
tw
ee
n t
he cam po
sitio
n
se
n-
so
r
a
n
d
th
e en
gin
e
ECM
.
5-
49
A-3
Ch
ec
k
th
e
br
im
o
f
th
e c
a
m
s
h
a
ft.
7
-4
7
Descr
iptio
ns o
f (*1) and
(*2
) in th
e “Symptom” column
are sho
w
n
in th
e “Rema
rks
.”
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