Seat Switch - Toro Groundmaster Series Service Manual

Seat Switch

Testing the Seat Switch
Groundsmaster ® 3200, 3300 and 3310
19240SL Rev A
g306072
1. Seat switch harness connector
The seat switch is normally open and closes when the operator is on the seat.
The seat switch is located directly under the seat cushion. Testing the switch
can be done without removing the seat by disconnecting the seat switch wire
harness from the machine wire harness.
The TDM display/controller monitors the position of the seat switch. The seat
switch is part of the machine safety interlock system. Using the seat switch
position (open or closed) and a variety of other inputs, the TDM display/controller
manages a variety of machine functions.
The seat switch and its circuit wiring can be tested using the TDM
display/controller main information screens (seat icon); refer to
TDM Display/Controller Screens for Troubleshooting (page
determines that the switch and circuit wiring are not functioning correctly,
proceed with the following test procedure:
1. Park the machine on a level surface, lower the cutting unit (or attachment),
engage the parking brake, set the key switch to the O
the key from the key switch.
2. Disconnect the wire harness connector from the seat switch harness.
Check the harness connectors for damage or corrosion and clean or repair
if necessary.
3. Check the continuity of the switch by connecting a multimeter (ohms setting)
across the switch harness terminals.
A. With no operator in the seat, should be no continuity between the
terminals.
B. Press directly onto the seat switch through the seat cushion. There should
be continuity as the seat cushion approaches the bottom of its travel.
4. Test the seat switch harness and seat switch separately if necessary:
A. Remove the seat from the seat box.
Figure 87
Page 6–27 Electrical System: Testing the Electrical Components
Using the
3–12). If testing
position and remove
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