Yamaha F225F, Service Manual

Page: 147 / 576

4-22
Troubleshooting the power unit
0
1
2
3
4
5
6
7
8
9
10
A
16
0
16
1
16
2
16
3
R
e
m
o
te
co
nt
ro
l
s
yst
em malfunc-
tio
n
(M
ain
st
at
ion
)
LPS I
rre
gula
r
sig-
nal
C/E
A
ler
t
indicator is
on
<E
ng
ine
s
p
e
e
d
s
do
n
o
t sy
nc
hr
o-
niz
e
>
—
Me
asur
e t
h
e
LPS ou
tp
ut
v
o
lt
ag
e
u
s
in
g th
e YDIS
.
Se
e th
e
Di
g
it
a
l
ne
twor
k
cont
rol
se
rv
ic
e
man
u
al.
Chec
k
f
o
r
wir
ing c
o
ntin
uity
b
e
tw
ee
n
th
e L
PS an
d
th
e Dig
ita
l
Elect
ro
n
ic Co
nt
ro
l
ECM.
Fu
lly clo
s
e
d
th
ro
ttle
Sh
ift
ac
tu
at
or
ro
d
re
tu
rn
s
to
th
e
N
po
sit
ion
Aler
t
in
dicat
o
r is on
<E
ng
ine
s
p
e
e
d
s
do
n
o
t sy
nc
hr
o-
niz
e
>
Wh
en e
ith
er
one
o
f
th
e
t
rou-
b
le codes
160
and
1
6
1
,
an
d
eit
her
one
o
f
th
e tr
ou
b
le
co
des 16
2 and
163
t
o
o
k
p
lace
sim
u
lta
neo
usly
.
Me
asur
e t
h
e
LPS ou
tp
ut
v
o
lt
ag
e
u
s
in
g th
e YDIS
.
Chec
k
f
o
r
wir
ing c
o
ntin
uity
b
e
tw
ee
n
th
e L
PS an
d
th
e Dig
ita
l
Elect
ro
n
ic Co
nt
ro
l
ECM.
16
4
R
em
o
te
co
nt
ro
l
s
yst
em malfunc-
tio
n
(M
ain
st
at
ion
)
LPS I
rre
gula
r
sig-
nal
C/
E
F
ully closed t
h
ro
tt
le
Thr
o
tt
le do
es
n
o
t ope
ra
te
Sh
ift
ac
tu
at
or
ro
d
re
tu
rn
s
to
th
e
N
po
sit
ion
Sh
ift
ac
tu
at
or
ca
n
be
o
p
e
ra
te
d m
a
n-
ually Aler
t
in
dicat
o
r is on
<Dif
fe
rence in
id
le sp
ee
ds>
<E
ng
ine
s
p
e
e
d
s
do
n
o
t sy
nc
hr
o-
niz
e
>
—
Rep
lace t
he Digit
al Elect
ro
n
ic
Control ECM (W
he
n re
pla
c
in
g
th
e Dig
ital
Electronic C
o
ntrol
ECM with
a
ne
w one
, res
e
tting of
Digital
Electronic C
o
ntrol
ECM is
nec-
es
sar
y
)
Se
e th
e
Di
g
it
a
l
ne
twor
k
cont
rol
se
rv
ic
e
man
u
al.
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