ELECTRICAL
8-1Toro GrandStand Service Manual
8
Detents inside the switch gives it 3 positions: OFF, RUN
and START. The START position is spring loaded so the
cylinder automatically returns to RUN once the key is
released (Fig. 1430).
B - Battery voltage “in” Y - Alternator/Regulator
S - Starting circuit circuit
I - Safety & starting circuit X - Alternator/Regulator
A - Auxiliary circuit circuit
Additional information can be found in the LCE Electrical
Troubleshooting DVD #492-9193, available through your
Toro parts supplier.
CAUTION
Before performing any tests with a continuity light or
ohmmeter, disconnect the component from the wire
harness. This ensures you are testing the component
rather than another circuit.
Interlock modules MUST be removed from the circuit
before performing any tests with an ohmmeter or
continuity light. Battery voltage can damage these
modules if applied to the wrong terminals.
Ignition Switch
Component Testing
Purpose
How It Works
1. Disconnect the switch from the wire harness.
2. Verify that continuity exists between the terminals
listed for the switch position (see table below). Verify
that there is NO continuity between the terminals not
listed for the switch position (see table below):
OFF No continuity between terminals
RUN Continuity – B I A and X Y
START Continuity – B I S
Testing
The ignition switch provides the proper switching for the
starter, ignition, accessories, and safety circuits.
The ignition switch is located on the control panel (Fig.
1429).
Location
Fig. 1429 IMG-1177a
Fig. 1430 IMG-1192a
Y
X
I
S
B
A
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