Load Center
F3
Radiator Fan Fuse
F4
Load Center Power Fuse
K1
Fuel Relay
K2
Starter Relay
K3
Glow Plug Relay
K4
Radiator Fan Relay
MV
Manual Valve Switch
LED
Related
Component
Color
ON-State
Description
D1
Fuel Shutoff
Solenoid (FS)
Green
Fuel shutoff
solenoid on the
engine is open.
D2
Starter (ST)
Red
Starter is
cranking.
D3
Glow Plugs
(GL)
Green Glow plugs are
heating.
D4
Radiator Fan
(RF)
Green Radiator fan is
on.
D10
A Coolant Valve Red
A-side (red)
coolant valve is
open.
D12
B Coolant Valve Blue
B-side (blue)
coolant valve is
open.
D14
Bypass Coolant
Valve
Green Bypass coolant
valve is open.
D23
Manual Valve
Switch (MV)
Red
Manual valve
switch is in the
ON position.
30
332636C