Seat Switch - Toro Groundsmaster 4500-D Series Service Manual

Seat Switch

Testing
Electrical System: Component Testing
g309585
1. Wire harness connector
The seat switch is normally open and closes when the operator is on the seat.
The seat switch and its electrical connector are located in the seat assembly. If
the traction system or PTO switch is engaged when the operator raises out of
the seat, an operator advisory will be displayed on the InfoCenter. Testing of the
switch can be done without seat removal by disconnecting the switch wire from
the machine wire harness
Note: Before disconnecting the seat switch for testing, the switch and its circuit
wiring should be tested as a TEC electrical input using the InfoCenter Display
(see InfoCenter Display (page
and circuit wiring are functioning correctly, no further seat switch testing is
necessary. If, however, input testing determines that the seat switch and circuit
wiring are not functioning correctly, proceed with the following seat switch testing
procedure.
1. Park machine on a level surface, lower cutting decks, engage parking brake
and stop engine. Remove key from ignition switch.
2. Disconnect seat switch connector from the machine wire harness connector.
3. Check the continuity of the switch by connecting a multimeter (ohms setting)
across the seat switch connector terminals.
4. With no pressure on the seat, there should be no continuity between the
seat switch terminals.
5. Press directly onto the seat switch through the seat cushion. There should
be continuity as the seat cushion approaches the bottom of its travel.
6. If testing determines that seat switch is faulty, replace seat switch (see
Operator Seat Service (page
7. Connect seat switch connector to wire harness connector after testing is
complete.
1
Figure 198
2. Seat switch connector
(Figure 196).
6–8)). If input testing verifies that the seat switch
8–22)).
Page 6–38 Groundsmaster ® 4500-D/4700-D
19245SL Rev A