Kubota u15-3 Workshop Manual page 157

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1) At key ON position :
According to the water temp. sensor signal, auto glow controller detects and calculates the required time to
glow plugs and supply the current to the glow relay to turn on.
Then the battery current flows to the glow plugs and the glow lamp.
(3)
ON-14-3
off
ON-14-1
on
Start
ON-14-2
(2)
(1)
(1)
Battery
(2)
Fuse 50A
(3)
Key SW
(4)
Fuse SA 5A
(5)
Auto release stabilizing relay
(6)
Auto release controller
(7)
Low-voltage detection
(8)
Rotation detection
(4)
(5)
ON-320-2
ON-320-3
ON-320-4
ON-320-1
(7)
ON-310-2
(8)
ON-310-1
(11)
ON-300-3
ON-300-1
(14)
ON-32-1
ON-300-2
ON-32-2
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(6)
ON310-4
(12)
ON-17-4
ON-17-2
(13)
ON-300-6
ON-300-5
Auto release relay
To starter motor
From altemator
Glow relay
Auto glow controller
Water temp sensor
To glow lamp
Glow plug
II-137
WSM U15-3
ON-34-2
ON-34-3
(9)
ON-34-4
ON-34-1
ON-308-1
ON-309-1
(10)
ON-17-3
ON-17-1
ON-115
(15)
(16)

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