Yamaha F225F Service Manual page 230

ELEC
R
PTT relay input voltage:
Red (R)–Ground
12.0 V (battery voltage)
4. Disconnect the PTT relay leads and PTT
motor leads.
disconnecting
terminals, make sure to disconnect
the negative battery terminal.
5. Connect the special service tool a.
6. Check the PTT relay for continuity.
Replace if out of specification.
W/R B
a
f
g
Test harness (3 pins) a:
90890-06791
PTT relay continuity:
a b d
5-67
Electrical system
c
NOTICE: Before
the PTT relay
Lg
R
Sb
W /B
h
e
a
d
b
e f g h
7. Connect the positive battery lead to the
connector g, connect the negative
battery lead to the connector f, and
then check the PTT relay for continuity.
Replace if out of specification.
W/R W/B
B
g
h
f
PTT relay continuity:
a b
8. Connect the positive battery lead to the
connector g, connect the negative
battery lead to the connector h, and
then check the PTT relay for continuity.
Replace if out of specification.
W/R B W/B
g
f h
PTT relay continuity:
a b
9. Remove the intake manifold (STBD).
Lg
R
Sb
a
e
d
a
b
d e
Lg
R
Sb
a
e
a
d
b
d e