Indicator Lights And Circuits (Gm 3000) - Toro Groundsmaster 3000 Service Manual

Indicator Lights and Circuits
Note: Individual light bulbs can be tested by removing
them from the lighting cluster and applying 12 VDC to
their wiring terminals (Fig 63).
Low Oil Pressure Light
The oil pressure light should come on when the ignition
switch is in the ON position with the engine not running.
Also, it should light with the engine running when the oil
pressure drops below 7 PSI (0.48 Bar).
1. Disconnect gray wire from the oil pressure switch.
2. Ground gray wire to the engine block.
3. Turn the ignition switch to ON; the light should come
on.
4. Turn the ignition switch to OFF and connect gray
wire to the oil pressure switch.
High Coolant Temperature Light
The temperature light should come on only if the high
temperature shutdown switch and relay have stopped
the engine when the coolant temperature is from 245 to
255 F (118 to 124 C). The ignition switch must be in ei­
ther the ON or START position for the light to come on.
1. Disconnect gray wire from the high temperature
shutdown switch.
2. Ground the gray wire to the engine block.
3. Turn the ignition switch to ON; the light should come
on and the high temperature shutdown relay should
click.
4. Turn the ignition switch to OFF and connect gray
wire to the high temperature shutdown switch.
Battery Light
The battery light should come on when the ignition
switch is in ON with the engine not running or with an im­
properly operating charging circuit while the engine is
running.
1. Turn ignition switch to ON; the light should come on.
2. Turn ignition switch to OFF.
Low Water Level Light
This light is not used on models with the Ford VSG–411
gasoline engine.
Electrical System
(GM 3000)
Page 6 – 34
LOW
WATER
LEVEL
(RED)
BATT
(AMBER)
FRONT OF GAUGE
Figure 63
BACK OF GAUGE
A
B
A B C D
Figure 64
SCHEMATIC
Figure 65
Groundsmaster 3000/3000–D
LOW OIL
PRESSURE
(RED)
HIGH
COOLANT
TEMPERATURE
(RED)
F
E
E F