Indicator Lights - Toro GroundsmasterR 4300-D Service Manual

Indicator Lights

Glow Plug Indicator Light
The glow plug indicator light should come on when the
ignition switch is placed in the RUN position prior to plac-
ing the ignition switch in START. The light should stay lit
for approximately six (6) seconds while the ignition
switch is left in the RUN position. The indicator light
should also be illuminated when the ignition switch is in
the START position.
High Temperature Warning Light
If the engine coolant temperature reaches 221
o
(105 C) (approximate), the high temperature warning
light should come on.
NOTE: When machine is in mow operation, high cool-
ant temperature will cause the cutting decks to shut off
in addition to warning light illumination.
Engine Oil Pressure Light
The engine oil pressure light should come on when the
ignition switch is in the RUN position with the engine not
running. Also, it should illuminate with the engine run-
ning if the engine oil pressure drops to an unsafe level.
To test the oil pressure light and circuit wiring, ground the
wire attached to oil pressure switch located on the en-
gine near the oil filter. Turn ignition switch to the RUN
position; the engine oil pressure light should come on in-
dicating correct operation of the indicator light and cir-
cuit wiring.
Charge Indicator Light
The charge indicator light should come on when the igni-
tion switch is in the RUN position with the engine not run-
ning. Also, it should illuminate with an improperly
operating charging circuit while the engine is running.
Testing Indicator Lights
If testing of the indicator lights is necessary:
1. Remove control arm covers to gain access to indica-
tor light and harness connectors (see Control Arm Dis-
assembly in the Service and Repairs section of Chapter
6 -- Chassis).
2. Locate the indicator light to be tested and disconnect
the wire harness electrical connector from the light.
Groundsmaster 4300--D
3. Apply 12 VDC to terminals 1A and 2A (Fig. 20).
4. Ground terminals 1B and 2B (Fig. 20).
5. Both indicator lights should illuminate.
6. Connect wire harness electrical connector to the in-
dicator light.
7. Install control arm cover to machine (see Control
Arm Assembly in the Service and Repairs section of
Chapter 6 -- Chassis).
o
F
2
1
1. Glow plug indicator
2. High temp warning
2
1
1B (--)
2B (--)
1. Glow plug indicator
2. High temp warning
3. Engine oil pressure
Page 5 - - 23
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4
Figure 19
3. Engine oil pressure
4. Charge indicator
5
6
1A (+)
2A (+)
Figure 20
4. Charge indicator
5. Indicator light front
6. Indicator light back
Electrical System
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4