Checking The Neutral Switch; Checking The Engine Shut-Off Switch - Yamaha F150B Service Manual

ELEC

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.
B
a
Neutral switch input voltage:
Blue/Green (L/G)–Black (B)
4.75–5.25 V
3. Turn the engine start switch to "OFF."
4. Remove the neutral switch.
5. Check the neutral switch continuity.
d e
Neutral switch continuity:
Position
b
c
6. Remove the junction box cover, and then
disconnect the engine ECM coupler f.
5-37
Electrical system
L/G
b
c
Terminal
d e
f
7. Check the wiring harness for continuity.
a
f
Wiring harness continuity:
Terminal 1–Terminal 31
Terminal 2–Terminal 8
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.
8
31