Yamaha F150B Service Manual page 145

a
B
Y
Hour meter input voltage
(reference data):
Yellow (Y)–Black (B)
11.2 V
3. Turn the engine start switch to "OFF."
4. Disconnect the 10-pin main harness cou-
pler b.
5. Remove the junction box cover, and then
disconnect the engine ECM coupler c.
Engine control units and components
6. Check the wiring harness for continuity.
a
c
b
Wiring harness continuity:
a Terminal 1–b Terminal 3
a Terminal 1–c Terminal 13
a Terminal 2–b Terminal 2
a Terminal 2–c Terminal 2
a Terminal 3–b Terminal 9
a Terminal 3–Ground
b Terminal 2–c Terminal 2
b Terminal 3–c Terminal 13
b Terminal 9–Ground
7. Connect the engine ECM coupler c, and
then install the junction box cover.
8. Connect the 10-pin main harness coupler
b and hour meter coupler a.
c
b
2 1
2
3
3
9
13
0
1
2
3
4
5
2
6
7
8
9
10
A
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