Seat Switch - Toro Groundsmaster 3280-D Service Manual

Seat Switch

Testing the Seat Switch
Electrical System: Testing the Electrical Components
g190803
1. Seat
2. Machine wire harness
The seat switch is normally open and closes when the operator is on the seat. If
the traction system or PTO switch is engaged when the operator raises out of the
seat, the engine shuts off. The seat switch and its electrical connector are located
directly under the seat
seat removal by disconnecting the seat wire from the machine wire harness.
The Standard Control Module (SCM) monitors the operation of the seat switch. If
the key switch is in the O
input LED should be illuminated.
1. Park the machine on a level surface, lower the cutting deck, set the parking
brake, and shut off the engine.
2. Before you disconnect the seat switch for testing, ensure that you test the
switch and its circuit wiring as a SCM input; refer to
(SCM) (page 6–3).
3. If the SCM verifies that the seat switch and circuit wiring are functioning
correctly, proceed with the test.
4. If the SCM determines that the seat switch and circuit wiring are not
functioning correctly, then test the seat switch as follows:
5. Ensure that the key switch is in the O
6. Disconnect the machine wire harness electrical connector from the seat
switch (Figure 137).
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.
Figure 137
3. Washer-head screw (2 each)
4. Seat switch
(Figure 137). Testing of the switch can be done without
position and the seat is occupied, the SCM in seat
N
position. Locate the switch for testing.
FF
Page 6–36
Standard Control Module
Groundsmaster ® 3280-D/3320
05138SL Rev B