Cutting Deck Lift Switches - Toro Groundsmaster 4700-D Service Manual

Cutting Deck Lift Switches

The cutting deck lift switches are used as inputs for the
TEC controller to raise or lower the cutting decks. When
the front of a lift switch is depressed and held, the con-
trolled decks will lower. When the rear of a lift switch is
depressed and held, the controlled decks will raise. The
decks will remain in position when the switch is re-
leased. The lift switches are located on the console arm
(Fig. 20).
NOTE: To lower the cutting decks, traction speed has
to be in low range (4WD). Also, to raise or lower the
decks, the seat has to be occupied.
Testing
1. Before disconnecting the lift switch for testing, the
switch and its circuit wiring should be tested as a TEC
input with the Diagnostic Display (see Diagnostic Dis-
play in the Troubleshooting section of this chapter). If the
Diagnostic Display verifies that the lift switch and circuit
wiring are functioning correctly, no further switch testing
is necessary. If, however, the Display determines that
the lift switch and circuit wiring are not functioning cor-
rectly, proceed with test.
2. Make sure ignition switch is OFF. Remove key from
ignition switch.
3. Disassemble console arm to gain access to cutting
deck lift switches (see Console Arm Disassembly in the
Service and Repairs section of Chapter 7 -- Chassis).
4. Disconnect harness electrical connector from the lift
switch.
5. The switch terminals are marked as shown in Figure
22. The circuit logic of the lift switches is shown in the
chart below. 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
position. Verify continuity between switch terminals. Re-
place switch if testing identifies a faulty switch.
SWITCH CLOSED
CIRCUITS
POSITION
DECK LOWER 2 + 3
5 + 6
NEUTRAL NONE
DECK RAISE 2 + 1
5 + 4
6. If lift switch tests correctly and circuit problem still ex-
ists, check wire harness (see Electrical Schematics and
Wire Harness Drawings in Chapter 9 -- Foldout Draw-
ings).
Groundsmaster 4500--D/4700--D
7. After testing is completed, connect wire harness
connector to the lift switch.
8. Assemble console arm (see Console Arm Assembly
in the Service and Repairs section of Chapter 7 -- Chas-
sis).
1. Console arm
2. Lift switch (#1 to #5)
CUTTING
DECK
LOCATIONS
OPEN
CIRCUITS
2 + 1
5 + 4
ALL
2 + 3
5 + 6
NOTE: Lift switch terminals 4, 5 and 6 are not used on
Groundsmaster 4500--D and 4700--D machines.
Page 5 - - 19
1
2
4
Figure 20
3. Lift switch (GM4700 #7)
4. Lift switch (GM4700 #6)
#4 #1
#6 #2 #3
(GM4700)
Figure 21
BACK OF SWITCH
Figure 22
Electrical System
3
#5
#7
(GM4700)