High Temperature Shutdown Switch - Toro Groundsmaster 3280-D Service Manual

High Temperature Shutdown Switch

Testing the High Temperature Shutdown Switch
Groundsmaster ® 3280-D/3320
05138SL Rev B
g226811
1. High temperature shutdown switch (diesel engine)
g230992
1. High temperature shutdown switch (gasoline engine)
The high temperature shutdown switch
to the water pump housing on the engine and has a blue/white wire attached to
it. This switch is normally open and closes when engine coolant temperature
reaches approximately 115°C (240°F). The closed switch provides an input to
the Standard Control Module (SCM).
This input causes the SCM high temperature shutdown LED to illuminate and
the cutting deck to shut down. The high temperature shutdown switch and
circuit wiring should be tested as a SCM input before performing the following
testing procedure.
1. Park the machine on a level surface, lower the cutting deck, shut off the
engine, set the parking brake, and remove the key from the key switch.
2. Unlatch the hood and raise it.
Figure 154
Figure 155
(Figure 154
Page 6–55 Electrical System: Testing the Electrical Components
or Figure 155) is attached