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Groundsmaster 4000--D Page 5 -- 9 Electrical System
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
checking continuity on the switch).
NOTE: For engine component testing information, see
the Kubota Workshop Manual, Diesel Engine,
V2403--M--T--E3B Series at the end of Chapter 3 -- Ku-
bota Diesel Engine.
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 (3) positions: OFF,
ON / PREHEAT and START (Fig. 7). The terminals a re
marked as shown in Figure 8. The circuit wiring 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 be-
tween the various terminals for each switch position.
Verify continuity between switch terminals.
POSITION
CIRCUIT
OFF NONE
ON / PREHEAT B+I+A, X+Y
START B+I+S
Figure 7
45
°
45
°
ON / PREHEAT
START
OFF
Figure 8
A
B
S
Y
X
I
Electrical
System