Yamaha F400A 2022 - Outboard Motor and Digital Electronic Control Connection; Checking the Extension Wire Harness; Checking the Main Harness

Outboard motor and Digital Electronic Control connection
5-50
Outboard motor and Digital
Electronic Control connection
Checking the extension wire harness
1. Check:
• Extension wire harness
a. Check the extension wire harness for
continuity. Check the wire terminal
numbers from “a” to “m”.
Checking the main harness
1. Check:
• Main harness
a. Disconnect the main wire harness cou-
pler “a”.
b. Disconnect the engine ECM couplers
“b” and “c”.
c. Disconnect the electrical management
box coupler “d”.
d. Check the wire harness for continuity.
Continuity between the main wire har-
ness coupler “a” and the engine ECM
coupler “b”:
Continuity between the main wire har-
ness coupler “a” and the engine ECM
coupler “c”:
Continuity between the main wire har-
ness coupler “a” and the electrical
management box coupler “d”:
a b c
d e f
h
g
i
j
k
l
a b c
d e f
h
g
i j
k
l
m m
a
b c
Terminal of coupler
“a”
Terminal of coupler
“b”
4–27
8–36
14 – 17
15 – 26
Terminal of coupler
“a”
Terminal of coupler
“c”
2–18
3–9
d
4 3 2
8 7 6
12 11 10 9
9
15 14
3 2 1
9
6
36
27
26
17
18
a
c
d
b
<B>
<C>