Seat Switch - Toro Groundsmaster 360 Service Manual

Seat Switch

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 will stop. The seat switch and its electri-
cal connector (Fig. 49) are located directly under the
seat.
On 2WD machines, the Standard Control Module
(SCM) monitors the operation of the seat switch. If the
ignition switch is in the RUN position and the seat is oc-
cupied, the SCM in seat input LED should be illumina-
ted.
On 4WD machines, the Toro Electronic Controller (TEC)
monitors the operation of the seat switch.
Testing
1. Park machine on a level surface, lower cutting deck,
engage parking brake and stop engine.
2. Before disconnecting the seat switch for testing, the
switch and its circuit wiring should be tested as an elec-
trical input using the SCM on 2WD machines or the
Diagnostic Display on 4WD machines (see Standard
Control Module or Diagnostic Display in the Trouble-
shooting section of this chapter). If input testing verifies
that the seat switch 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.
3. Make sure ignition switch is in the OFF position. Tilt
seat assembly up to gain access to seat switch electrical
connections.
NOTE: There is a short wire harness that is used to con-
nect the seat switch to the main wire harness of the ma-
chine. This seat switch harness is between the seat and
the seat plate.
4. Disconnect machine wire harness electrical connec-
tor from the seat switch harness electrical lead under the
operator seat (Fig. 49).
5. Check the continuity of the seat switch by connecting
a multimeter (ohms setting) across the seat switch har-
ness connector terminals.
A. With no pressure on the seat, there should be no
continuity between the seat switch harness termi-
nals.
Groundsmaster 360
B. Press directly onto the seat switch through the
seat cushion. There should be continuity between
the seat switch harness terminals as the seat cush-
ion approaches the bottom of its travel indicating that
the seat switch is functioning.
If seat switch service is necessary, remove seat
from seat plate to access switch. To prevent inju-
ry, DO NOT attempt to reach switch through
openings in seat plate.
6. If the continuity test determines that the seat switch
is not operating correctly, remove seat (see Operator
Seat in Chapter 6 -- Chassis). Check seat switch and/or
seat switch harness for continuity. Repair or replace
components as needed.
7. If the seat switch tests correctly and a circuit problem
still exists, check machine wire harness (see Electrical
Schematics and Wire Harness Drawings in Chapter 9 --
Foldout Drawings).
8. After seat switch testing is complete, connect ma-
chine wire harness connector to seat switch electrical
lead. Lower seat assembly. Check seat switch opera-
tion.
3
1. Seat wire harness
2. Seat harness connector
Page 5 - - 37
WARNING
1
2
Figure 49
3. Seat latch
Electrical System