Component Testing; Component Testing; Ignition Key Switch - Toro Workman 3000 Series Service Manual

Component Testing

This section will define given components, and the tests
that can be performed on those components, when
those parts are disconnected from the electrical system.
For accurate resistance and/or continuity checks, elec-
trically disconnect the component being tested from the
circuit (e.g. unplug the clutch switch connector before
doing a continuity check).

Ignition Key Switch

The ignition key switch has three positions (OFF, START
and RUN). The terminals are marked as shown in Figure
4. The circuitry of the ignition switch is shown in the chart
(Fig. 5). With the use of a continuity tester, the switch
functions may be tested to determine whether all circuits
are being completed while the key is moved to each
position.
Workman 3000/4000 Series
NOTE: Electrical troubleshooting of any 12 Volt power
connection can also be performed through voltage drop
tests without disconnection of the component.
When testing electrical components for continu-
ity with a volt–ohm meter or continuity tester,
make sure that power to the circuit has been dis-
connected.
B
S
POSITION CONTINUITY
AMONG
TERMINALS
1. OFF
2. RUN
3. START
Page 8 – 7
CAUTION
A
Y
I
X
Figure 4
OTHER
CIRCUITS
MADE
NONE NONE
B+A+I
B+S+I NONE
Figure 5
Electrical System
X+Y