Yamaha F225F Service Manual page 193

Cam position sensor input voltage:
Red/Yellow (R/Y)–Black (B)
12.0 V (battery voltage)
White/Black (W/B)–Black (B)
(STBD IN)
White/Green (W/G)–Black (B)
(PORT IN)
White/Blue (W/L)–Black (B)
(PORT EX)
4.75–5.25 V
3. Turn the engine start switch to OFF.
4. Make 3 test leads.
b
e
d
a
Test lead:
Terminal, male a: 9E212-10303
Terminal, female b: 9E212-11303
Terminal, female c: (commercially avail-
able)
d = 100 mm (3.94 in)
e = 50 mm (1.97 in)
f = Cutout area
5. Reduce the fuel pressure. See "Reducing
the fuel pressure" (6-6).
6. Remove the fuel rails.
7. Remove the cam position sensors d.
8. Connect the test leads to the cam
position sensor d and cam position
sensor coupler.
9. Connect the tester probes to the test
leads.
c
a
f
Engine control unit and component
d
12 V
d
R/Y
10. Turn the engine start switch to ON, and
then measure the output voltage when
moving a screwdriver close to the cam
position sensor. NOTICE: Make sure to
remove the high-pressure fuel pump
fuse.
h
g k
ECM
5 V
0
1
W/B
2
W/G
W/L
3
B
4
5
6
7
d
8
9
10
A
5-30