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Workman HDX Auto Page 6 − 9 Electrical System
Component Testing
This section will define electrical component operation
and supply test procedures that can be performed on
those components.
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 on the switch).
NOTE: Electrical troubleshooting of any 12 volt power
connection can also be performed through voltage drop
tests without disconnecting the component.
CAUTION
When testing electrical components for continu-
ity with a digital multimeter, make sure that pow-
er to the circuit has been disconnected.
Ignition (Key) Switch
The ignition (key) switch has three (3) positions: OFF,
RUN and START. The ignition switch is located on the
dash (Fig. 6).
Testing
1. Park machine on a level surface, stop engine, apply
parking brake and remove key from ignition switch.
2. To ease access to ignition switch, remove hood of ve-
hicle (see Hood in the Service and Repairs section of
Chapter 5
−
Chassis).
3. Locate ignition switch on dash and disconnect wire
harness electrical connector from the switch.
4. With the use of a multimeter (ohms setting), the igni-
tion switch functions may be tested to determine wheth-
er continuity exists between the various terminals for
each switch position. The switch terminals are marked
as shown in Figure 7. The circuitry of this switch is shown
in the chart below. Verify continuity between ignition
switch terminals for each switch position.
POSITION CIRCUITS
OFF NONE
RUN B + C + F, D + E
START A + B + C
5. Replace ignition switch if testing proves it to be faulty.
6. After testing, connect wire harness electrical connec-
tor to the ignition switch.
7. Install hood if it was removed (see Hood in the Ser-
vice and Repairs section of Chapter 5 − Chassis).
1. Dash 2. Ignition switch
Figure 6
1
2
Figure 7
REAR VIEW
FRONT VIEW
A
B
C
D
E
F
START
OFF
RUN
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o
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o
Electrical System