Toro Groundsmaster 4300-D Service Manual page 286

Testing the Seat Switch (continued)
Electrical System: Testing the Electrical Components
2. Before you disconnect the seat switch for testing, ensure that you test the
switch and its circuit wiring as a TEC electrical input with the InfoCenter
display; refer to Using the InfoCenter Display for Troubleshooting (page
5–26).
3. If the InfoCenter verifies that the seat switch and circuit wiring are functioning
correctly, no further switch testing is necessary.
4. If the InfoCenter determines that the seat switch and circuit wiring are not
functioning correctly, proceed with the test.
5. Ensure that the key switch is in the O
6. Disconnect the platform wire harness electrical connector from the seat
switch harness electrical lead near the operator manual tube under the
operator seat (Figure
7. Connect a multimeter (ohms setting) across the seat switch harness
connector terminals to check the continuity of the seat switch.
A. With no pressure on the seat, ensure that there is no continuity between
the harness terminals of the seat switch.
B. Press directly onto the seat switch through the seat cushion. Ensure that
there is continuity between the harness terminals of the seat switch as
the seat cushion approaches the bottom of its travel indicating that the
seat switch is functioning.
8. Replace the seat switch if testing determines that the switch is damaged.
9. If the seat switch testing is correct and a circuit problem still exists, check the
platform wire harness; refer to the Electrical Schematic and Wire Harness
Drawings/Diagrams in
10. After you complete the seat switch testing, connect the platform wire harness
connector to the seat switch electrical lead. Lower the seat assembly. Check
the operation of the seat switch.
position.
FF
171).
Appendix A (page A–1).
Page 5–62 Groundsmaster ® 4300-D
16226SL Rev C