ELECTRICAL AND ECU
Air Heater Components and Functions
12/05
6LY3 Service Manual
12-13
© 2007 Yanmar Marine International
AIR HEATER COMPONENTS
AND FUNCTIONS
Air Heater Operation
Figure 12-18
Figure 12-18
1 – ECU
2 – Battery
3 – Air Heater “A”
4 – Air Heater “B”
Figure 12-19
Figure 12-19
+
-
(2)
(1)
(
3
)
(4)
00062
8
5
Key On
Air He
a
ter
“
B
”
Engine
S
peed
Time
Pre-He
a
t. Air He
a
ter i
s
on when the
cool
a
nt temper
a
t
u
re i
s
le
ss
th
a
n
10°C (50°F) (m
a
xim
u
m
3
0
s
econd
s
)
while engine i
s
r
u
nning.
After He
a
t. Air He
a
ter i
s
on when the
cool
a
nt temper
a
t
u
re i
s
le
ss
th
a
n
45°C (11
3
°F) (m
a
xim
u
m 10 min
u
te
s
,
7 min
u
te
s
) while engine i
s
r
u
nning.
Time
Time
Air He
a
ter
“
A
”
0006
3
59
