Chapter 7 - - Chassis; Warning Lights - Toro Groundsmaster 4100-D Service Manual

Warning Lights

Charge Indicator Light
The charge indicator light should come on when the igni-
tion switch is in ON with the engine not running or with
an improperly operating charging circuit while the en-
gine is running.
To test the charge indicator light and circuit wiring,
ground the white wire attached to alternator. Turn igni-
tion switch to ON; the charge indicator light should illumi-
nate indicating correct operation of the electrical wiring
to the alternator.
Engine 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 if the engine
oil pressure drops below 7 PSI (0.5 kg/cm
To test the oil pressure light and circuit wiring, ground the
green wire attached to oil pressure switch located on
right side of engine near the starter motor. Turn ignition
switch to ON; the oil pressure light should illuminate indi-
cating correct operation of the electrical wiring to the oil
pressure switch.
High Temperature Warning Light
If the engine coolant temperature rises to approximately
o o
220 F (105 C), the high temperature light should come
on and the PTO (cutting deck) will disengage.
To test the high temperature warning light and circuit wir-
ing, start the engine and ground the gray wire attached
to the temperature sender attached to water flange on
engine (see Temperature Sender in this section). Warn-
ing light should illuminate.
Glow Plug Indicator Light
The glow plug light should come on when the ignition
switch is placed in ON/PREHEAT prior to placing the
ignition switch in START. The light should stay lit for
approximately seven (7) seconds while the ignition
switch is left in ON.
Testing Warning Lights
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
7 -- Chassis).
2. Locate the indicator light to be tested and disconnect
the wire harness electrical connector from the light.
Groundsmaster 4100--D/4110--D
3. Apply 12 VDC to terminals 1A and 2A (Fig. 23).
4. Ground terminals 1B and 2B (Fig. 23).
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 7 -- Chassis).
).
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2
3
1. Charge indicator
2. Engine oil pressure
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4
1. Charge indicator
2. Engine oil pressure
3. High temp shutdown
Page 5 - - 23
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4
Figure 22
3. High temp warning
4. Glow plug indicator
5
1B 1A (+)
2B 2A (+)
Figure 23
4. Glow plug indicator
5. Warning light back
Electrical System
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