Seat Switch - Toro Groundsmaster 5900 Series Service Manual

Seat Switch

Testing
Groundsmaster ® 5900 & 5910
16227SL Rev B
g288536
1. Wire harness connector
The seat switch and its electrical connector are located in the seat assembly.
The seat switch is a normally open proximity switch that closes when the
operator is on the seat. Testing of the switch can be done without seat removal
by disconnecting the switch wire from the machine wire harness
The master controller monitors the position of the seat switch. Using seat switch
position (open or closed) and a variety of other switches and sensors, the master
and slave controllers manage engine start, traction control and PTO functions.
The seat switch and its circuit wiring can be tested as a TEC input using the
InfoCenter Display (see
that the switches and circuit wiring are not functioning correctly, proceed with
the following test procedure:
1. Park machine on a level surface, lower cutting decks and stop engine.
Remove key from key 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. Replace the switch if testing determines that it is faulty (see
Service (page 7–42)).
7. If the switch tests correctly and a circuit problem still exists, check the wire
harnesses (see Appendix A (page
8. After testing is complete, connect machine wire harness connector to the
switch.
Figure 231
2. Seat switch connector
InfoCenter Display (page
A–1)).
Page 6–91
1
(Figure
6–9)). If testing determines
Operator Seat
Electrical System: Component Testing
231).