Yamaha F150B Service Manual page 160

ELEC
2. Turn the engine start switch to "ON," and
then measure the input voltage at the
thermoswitch connectors.
Thermoswitch input voltage:
(reference data)
Pink (P)–Black (B)
11.1V
3. Turn the engine start switch to "OFF."
4. Remove the thermoswitch.
5. Place the thermoswitch in a container of
water and slowly heat the water.
P
6. Check the switch for continuity at the
specified temperatures. Replace if out of
specification.
5-35
Electrical system
B
P
B
d
e
a
c
a
Temperature
b
Time
c
No continuity
d
Continuity
Thermoswitch continuity temperature:
e: 84–90 °C (183–194 °F)
f: 68–82 °C (154–180 °F)
7. Install the thermoswitch.
8. Remove the junction box cover, and then
disconnect the engine ECM coupler g.
g
9. Check the wiring harness for continuity.
P
g
37
d
d
f
c
b
B
8