Key Switch - Toro Groundmaster Series Service Manual

Key Switch

Testing the Key Switch
Electrical System: Testing the Electrical Components
POSITION CLOSED
CIRCUITS
1 + 6, 4 + 5
OFF
RUN 1 + 3 + 4 + 5 + 6
START 1 + 2 + 4 + 5 + 6
The key switch is located on the operator's console and has 3 positions: O
R , and S . The key switch is an input used by the TDM display/controller
UN TART
to manage various machine functions.
The key switch and its circuit wiring can be tested using the TDM
display/controller; refer to
Troubleshooting (page
wiring are not functioning correctly, proceed with the following test procedure:
1. Park the machine on a level surface, lower the cutting unit (or attachment),
engage the parking brake, set the key switch to the O
the key from the key switch.
2. Disconnect the battery negative (-) cable at the battery; refer to
and Installing the Battery (page
3. Remove the operator's console covers; refer to
Operator's Console Covers (page 7–23)
4. Disconnect the wire harness connector from the switch and remove the
switch from the console if necessary. Check the switch and the harness
connector for damage or corrosion and clean or repair if necessary.
Note: Key switch terminals 1 and 6 are connected internally. Terminals 4
and 5 are also connected internally. These terminals should have continuity
regardless of the switch position.
5. Use a multimeter (ohms setting) and the preceding table to determine
whether continuity exists between the various terminals for each switch
position.
6. Replace the switch if necessary.
7. If the switch tests correctly and a circuit problem still exists, check the wire
harnesses; refer to
8. Install the switch and connect the wire harness after testing.
9. Install the console covers.
10. Connect the battery negative (-) cable at the battery.
Using the TDM Display/Controller Screens for
3–12). If testing determines that the switch and circuit
6–64).
Appendix A (page A–1).
Page 6–22
position and remove
FF
Removing
Removing and Installing the
Groundsmaster ® 3200, 3300 and 3310
19240SL Rev A
,
FF