Yamaha F150B Service Manual - Trbl
4-9
TRBL
SHTG
Troubleshooting
39
O
il p
re
s
s
se
ns
or
malfunc
tion
Ou
t o
f specif
ica-
tio
n
C
/E
Higher idle
speed
—
1.
Chec
k t
he oi
l
p
re
s
sur
e
u
s
in
g
th
e YDIS
.
2.
Mea
s
ure
t
h
e oil pr
essu
re
sensor
inpu
t v
o
lt
ag
e
.
3.
Mea
s
ure
t
h
e oil pr
essu
re
sensor
out
pu
t v
o
lt
a
g
e
.
4.
Chec
k f
o
r wir
ing
contin
uity
be
tw
een
t
h
e oil pr
essu
re
sensor
and
e
n
g
ine ECM.
45
S
h
if
t cu
t-
of
f
s
witc
h
malfunc
-
tio
n
Ir
re
g
u
lar
sig
nal
C/
E
Highe
r idle
sp
eed
—
1.
Mea
s
ure
t
h
e sh
ift
cut
s
witch
input v
o
ltage
.
2.
Mea
s
ure
t
h
e sh
ift
cut
s
witch
re
si
s
tan
ce
.
3.
Chec
k f
o
r wir
ing
contin
uity
be
tw
een
t
h
e sh
ift
cut
s
witch
an
d eng
ine
ECM.
4
6
Ov
er
hea
t t
h
e
r-
mos
witch mal-
fu
nc
tio
n
Ir
re
g
u
lar
sig
nal
C/
E
Highe
r idle
sp
eed
—
1.
Mea
s
ure
t
h
e
th
er
m
o
s
witch
input v
o
ltage
.
A-5
2.
Chec
k th
e t
her
mos
witch
f
o
r
cont
in
uit
y.
3.
Chec
k f
o
r wir
ing
contin
uity
be
tw
een
t
h
e
th
er
m
o
s
w
it
ch
an
d eng
ine
ECM.
T
roub
le
code
Item
C
o
ndition
La
n ga
u
g
e
displa
y
Symp
to
m
R
e
m
ar
ks
Ch
ec
king
st
eps
Ref
e
r to
p
age