Steering Selector Switch (4Wd Machines) - Toro Groundsmaster 360 Service Manual

Steering Selector Switch (4WD Machines)

The steering selector switch on 4WD machines is used
to control 4 wheel steer operation. The steering selector
switch is located on the control panel (Fig. 38).
When the front of the steering selector switch is de-
pressed with the wheels directed straight ahead, steer-
ing will only be active on the front wheels. This position
is recommended for transporting the machine. When
the rear of the steering selector switch is depressed with
the wheels directed straight ahead, 4 wheel steering will
be active.
The indicator light on the switch identifies when the ma-
chine is in 2 wheel steering operation and also can be
used to determine when the wheels are directed straight
ahead. The indicator light will not be illuminated when 4
wheel steering is active. A flashing light when changing
steering selector switch positions indicates that the
wheels are not directed straight ahead and the steering
wheel needs to be slowly turned until the flashing
ceases.
Testing
1. Park machine on a level surface, lower cutting deck,
engage parking brake and stop engine.
2. The Toro Electronic Controller (TEC) monitors the
operation of the steering selector switch. Before discon-
necting the steering selector switch for testing, the
switch and its circuit wiring should be tested as an elec-
trical input using the Diagnostic Display (see Diagnostic
Display in the Troubleshooting section of this chapter).
If input testing verifies that the steering selector switch
and circuit wiring are functioning correctly, no further
switch testing is necessary. If, however, input testing de-
termines that the steering steering switch and circuit wir-
ing are not functioning correctly, proceed with the
following steering steering switch testing procedure.
3. Remove control panel to gain access to steering se-
lector switch (see Control Console Disassembly in the
Service and Repairs section of Chapter 6 -- Chassis).
4. Make sure ignition switch is in the OFF position. Dis-
connect machine wire harness electrical connector from
the steering selector switch.
5. The steering selector switch terminals are identified
in Figure 39 and the circuitry of the selector switch is
shown in Figure 40. With the use of a multimeter (ohms
setting), the switch functions may be tested to determine
whether continuity exists between the various terminals
for each switch position. Verify continuity between
switch terminals.
Groundsmaster 360
6. Replace steering selector switch if testing deter-
mines that it is faulty.
7. If the steering selector switch tests correctly and a
circuit problem still exists, check wire harness (see Elec-
trical Schematics and Wire Harness Drawings in Chap-
ter 9 -- Foldout Drawings).
8. After testing is complete, connect machine wire har-
ness connector to steering selector switch. Secure con-
trol panel to machine with removed fasteners.
1
1. Control panel
SWITCH
POSITION
4 WHEEL STEER
2 WHEEL STEER
NOTE: Steering selector switch terminals 3, 4, 5 and 6
are not used on Groundsmaster 360 machines.
Page 5 - - 33
2
Figure 38
2. Steering selector switch
BACK OF SWITCH
Figure 39
NORMAL OTHER
CIRCUITS CIRCUITS
2 + 1 5 + 4
2 + 3 5 + 6
Figure 40
Electrical System