Glow Controller (2Wd Machines) - Toro Groundsmaster 360 Service Manual

Glow Controller (2WD Machines)

On Groundsmaster 360 machines with 2WD, the glow
controller is attached to the air cleaner bracket near the
rear steering cylinder (Fig. 74).
NOTE: When troubleshooting the glow controller, refer
to electrical drawings in Chapter 9 -- Foldout Drawings.
Controller Operation
1. When the ignition switch is initially placed in the RUN
position, the glow controller energizes the glow plugs for
six (6) seconds. The console glow plug indicator light will
also be illuminated for six (6) seconds.
2. When the ignition switch is turned to the START posi-
tion, the glow plugs will energize as long as the switch
is held in START. The console glow plug indicator light
will not be illuminated.
3. When the ignition switch is released from the START
to the RUN position, the glow plugs will de--energize and
the console glow plug indicator light will remain off.
Controller Checks
1. Make sure there is electrical power from the battery.
2. Disconnect the wire harness electrical connector
from the engine fuel stop solenoid to prevent the engine
from starting.
3. Place ignition switch in the RUN position. Verify the
following while in the RUN position:
A. Glow plug indicator light is illuminated.
B. Glow relay is energized.
C. Glow plugs are energized.
D. Glow plug indicator light goes out and glow plugs
de--energize after approximately six (6) seconds.
4. Place ignition switch in the START position. Verify
the following while in the START position:
A. Glow plug indicator light is not illuminated.
B. Glow relay is energized.
C. Glow plugs are energized.
D. Electrical power exists at terminal 1 of the glow
controller.
NOTE: If there is no electrical power at terminal 1 of the
glow controller, verify continuity of the circuitry from the
ignition switch to the controller and perform Step 4 again
(see Chapter 9 -- Foldout Drawings).
Electrical System
5. If any of the conditions in Step 3 are not met or electri-
cal power to terminal 1 exists and any of the other condi-
tions in Step 4 are not met:
A. Verify continuity of the circuitry from the battery to
the glow relay and glow plugs (see Chapter 9 -- Fol-
dout Drawings).
B. Verify continuity of the circuitry from the battery to
ignition switch, glow controller, glow plug indicator
light, glow relay and ground (see Chapter 9 -- Foldout
Drawings).
C. Repair or replace components as necessary.
6. After testing is completed, connect wire harness
electrical connector to the fuel stop solenoid.
1. Rear steering cylinder
1
VIOLET
ORANGE
PINK
1. Controller top view
Page 5 - - 54
2
Figure 74
2. Glow plug controller
CONTROLLER
CONNECTIONS
1 4 TEMP (not used)
START
LAMP 2 5 GLOW
6 GROUND
+12V 3
Figure 75
2. Controller end view
Groundsmaster 360
1
3 6
2 5
1 4
2
GRAY
BLACK