Glow Controller (Groundsmaster 3280−D) - Toro Groundsmaster 3280-D Service Manual

Glow Controller (Groundsmaster 3280−D)
The glow controller used on the Groundsmaster
3280−D (diesel engine) is located under the control
panel.
NOTE: Refer to Chapter 11 − Electrical Diagrams when
troubleshooting the glow controller circuit.
Controller Operation
1. When the ignition switch is placed in the RUN posi-
tion, the controller energizes the glow plugs and lights
up the glow lamp for approximately 6 seconds.
2. When the ignition switch is held in the START posi-
tion, the glow plugs will energize while the switch is held
in START and the glow lamp will not light.
3. When the ignition switch is released from START to
RUN, the glow plugs will de−energize and the glow lamp
will remain off.
Controller Checks
1. Make sure there is power from the battery.
2. Disconnect electrical connector to the fuel stop sole-
noid to prevent the engine from starting.
3. Place ignition switch in the RUN position. Verify the
following while in the RUN position:
A. Glow indicator lamp is on.
B. Glow relay is energized.
C. Glow plugs are energized.
D. Glow indicator lamp goes out and glow plugs de−
energize after approximately 6 seconds.
4. Place ignition switch in the START position. Verify
the following while in the START position:
A. Glow indicator lamp is out.
B. Glow relay is energized.
C. Glow plugs are energized.
D. Power exists at terminal 1 of the glow controller.
NOTE: If there is no power to terminal 1 of the glow con-
troller, verify continuity of the circuitry from the ignition
switch to the glow controller and perform Step 4 again
(see Chapter 11 − Electrical Diagrams).
Groundsmaster 3280−D/3320
5. If any of the conditions in Step 3 are not met or power
to terminal 1 exists and any of the other conditions in
Step 4 are not met:
A. Verify continuity of the circuitry from the battery to
the glow relay and glow plugs (see Chapter 11 −
Electrical Diagrams).
B. Verify continuity of the circuitry from the battery to
ignition switch, glow controller, glow lamp, glow relay
and ground (see Chapter 11 − Electrical Diagrams).
C. Replace parts as necessary.
6. Connect electrical connector to the fuel stop sole-
noid.
1. Glow controller end view
2. Top view
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Figure 32
3. Side view
Electrical System
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