Checking The Ptt Switch (Bottom Cowling) - Yamaha F225F Service Manual

10. Remove the fuse holder b, and then
disconnect the fuse holder coupler k.
k
11. Disconnect the engine ECM coupler m.
12. Check the wiring harness for continuity.
m
c
3 2 1
k
Wiring harness continuity:
Terminal 1–Terminal 113
Terminal 2–Terminal 16
Terminal 3–Terminal 112
13. Connect the PTT relay coupler c.
14. Connect the PTT relay leads, PTT motor
leads, and PTT relay coupler.
15. Connect the fuse holder coupler k, and
then install the fuse holder b.
b
m
113 112
16
PTT electrical system
16. Install the intake manifold (STBD). See
"Installing the intake manifold" (6-16).
17. Connect the engine ECM coupler m.
Checking the PTT switch (bottom
cowling)
1. Disconnect the PTT switch coupler a.
2. Measure the input voltage between the
PTT switch coupler terminal and ground.
A
a
B
R
A Regular rotation model
B Counter rotation model
PTT switch input voltage:
Red (R)–Ground
12.0 V (battery voltage)
3. Check the PTT switch for continuity.
Replace if out of specification.
0
1
2
R
3
4
5
6
a
7
8
9
10
b c d
Sb
R
Lg
A
5-68