Toro Groundsmaster
3500-D - Component Testing; Ignition Switch

Groundsmaster 3500--D Page 5 -- 9 Electrical System (Rev. D)
Component Testing
For accurate resistance and/or continuity checks, elec-
trically disconnect the component being tested from the
circuit (e.g. unplug the ignition switch connector before
doing a continuity check on the switch).
NOTE: For more component testing information, see
the Kubota Workshop Manual, Diesel Engine, 05 Se-
ries.
CAUTION
When testing electrical components for continu-
ity with a multimeter (ohms setting), make sure
that power to the circuit has been disconnected.
Ignition Switch
The ignition (key) switch has three positions (OFF, ON/
PREHEAT, and START). The terminals are marked as
shown. The circuitry of the ignition switch is shown in the
chart below. With the use of a multimeter (ohms setting),
the switch functions may be tested to determine whether
continuity exists between the various terminals for each
position. Verify continuity between switch terminals.
SWITCH
POSITION
NORMAL
CIRCUITS
OTHER
CIRCUITS
OFF NONE NONE
ON/PREHEAT B+A+I X+Y
START B+S+I NONE
Figure 4
A
Y
B
I
X
S
1. Switch
2. Key
3. Hex nut
4. Lock washer
Figure 5
2
3
1 4
Figure 6
45
°
45
°
ON/PREHEAT
START
OFF
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