Joystick Raise And Lower Switches - Toro GroundsmasterR 4300-D Service Manual

Joystick Raise and Lower Switches

Two (2) micro switches for the joystick are located on the
lift control that is attached to the control arm. The rear
switch on the control is used to lower (and engage) the
cutting decks and the front switch to raise (and disen-
gage) them. These switches are used as inputs for the
TEC controller. A normally open contact in the switch
closes when the joystick is positioned to either lower or
raise the cutting decks. Each switch has an electrical
connector to make sure the normally closed contact on
the switch is not used. The raise switch has yellow/blue
and black harness wires connected to it and the lower
switch has orange and black harness wires connected
to it.
Testing
1. Before disconnecting the joystick switches for test-
ing, the switches and their circuit wiring should be tested
as TEC controller inputs with the Diagnostic Display
(see Diagnostic Display in the Troubleshooting section
of this chapter). If the Diagnostic Display verifies that the
joystick switches and circuit wiring are functioning cor-
rectly, no further switch testing is necessary. If, however,
the Diagnostic Display determines that either joystick
switch and circuit wiring are not functioning correctly,
proceed with test procedure.
2. Remove control arm covers to gain access to joys-
tick switches (see Control Arm Disassembly in the Ser-
vice and Repairs section of Chapter 6 -- Chassis).
3. Make sure ignition switch is in the OFF position.
4. Disconnect wire harness electrical connector from
the raise or lower switch that is to be tested (Fig. 29).
5. Connect a multimeter (ohms setting) across the nor-
mally open (NO) and common terminals of the switch
(Fig. 30).
6. With the joystick in the neutral (center) position,
there should be no continuity (open) across the switch
terminals.
7. Move and hold the joystick to activate the switch be-
ing tested. There should be continuity (closed) across
the switch terminals.
Electrical System
8. If joystick switch is faulty, replace switch.
9. If the joystick switch tests correctly and a circuit prob-
lem still exists, check wire harness (see Electrical Sche-
matic and Circuit Drawings in Chapter 8 -- Foldout
Drawings).
10.Connect wire harness electrical connector to the
joystick switch.
11. Install control arm covers to machine (see Control
Arm Assembly in the Service and Repairs section of
Chapter 6 -- Chassis).
FRONT
2
1. Joystick
2. Lower switch
4
1. NO terminal
2. Common terminal
Page 5 - - 28
Figure 29
3. Raise switch
3
Figure 30
3. NC terminal (not used)
4. Switch lever
Groundsmaster 4300--D
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