Seat Switch - Toro Groundsmaster 4000-D Service Manual

Seat Switch

The seat switch is normally open and closes when the
operator is on the seat. This switch is used as an input
for the TEC--5002 controller. 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, the engine will stop. Test-
ing of the switch can be done without seat removal by
disconnecting the switch wire from the machine wire
harness (Fig. 31).
Testing
1. Before disconnecting the seat switch for testing, the
switch and its circuit wiring should be tested as a
TEC--5002 input with the Diagnostic Display (see Diag-
nostic Display in the Troubleshooting section of this
chapter). If the Diagnostic Display verifies that the seat
switch and circuit wiring are functioning correctly, no fur-
ther switch testing is necessary. If, however, the Display
determines that the seat switch and circuit wiring are not
functioning correctly, proceed with test.
2. Make sure ignition switch is OFF. Remove key from
ignition switch.
3. Disconnect seat switch connector from the machine
wire harness connector.
4. Check the continuity of the switch by connecting a
multimeter (ohms setting) across the seat switch con-
nector terminals.
5. With no pressure on the seat, there should not be
continuity between the seat switch terminals.
6. Press directly onto the seat switch through the seat
cushion. There should be continuity as the seat cushion
approaches the bottom of its travel.
7. If testing determines that seat switch is faulty, re-
place seat switch (see Operator Seat Service in the Ser-
vice and Repairs section of Chapter 7 -- Chassis).
8. Connect seat switch connector to wire harness con-
nector after testing is complete.
Electrical System
2
1. Seat switch electrical connector
2. Operator seat
Page 5 - - 28
1
Figure 31
Groundsmaster 4000--D/4010--D