Yamaha F150B - Checking the Neutral Switch; Checking the Engine Shut-Off Switch

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ELEC
Electrical system
Checking the neutral switch
1. Disconnect the neutral switch coupler a.
2. Turn the engine start switch to “ON,” and
then measure the input voltage.
3. Turn the engine start switch to “OFF.”
4. Remove the neutral switch.
5. Check the neutral switch continuity.
6. Remove the junction box cover, and then
disconnect the engine ECM coupler f.
7. Check the wiring harness for continuity.
8. Connect the engine ECM coupler f, and
then install the junction box cover.
9. Install the neutral switch, and then con-
nect the neutral switch coupler a.
Checking the engine shut-off switch
1. Disconnect the engine start switch cou-
pler.
2. Turn the engine start switch to “ON,” and
then check the engine shut-off switch for
continuity at the engine start switch cou-
pler. Check the wiring harness or replace
the engine shut-off switch if out of specifi-
cation.
Neutral switch input voltage:
Blue/Green (L/G)–Black (B)
4.75–5.25 V
Neutral switch continuity:
Position
Terminal
de
b
c
L/G
B
a
b
c
de
Wiring harness continuity:
Terminal 1–Terminal 31
Terminal 2–Terminal 8
f
8
a
f
31