Parking Brake Switch - Toro Greensmaster 3120 Service Manual

Parking Brake Switch

Testing the Parking Brake Switch
Electrical System: Testing the Electrical Components
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1. Parking brake switch
The switch is located directly under the operator foot panel. The parking brake
switch is used to determine when the parking brake is engaged or disengaged.
The switch is a normally closed proximity switch that opens when the operator
sets the parking brake (the parking brake latch comes in close proximity to the
switch). If the function control lever is moved out of N
opens) when the parking brake is engaged, the engine magneto will divert the
ignition circuit to ground and the engine will stop. The parking brake switch
should not require adjustment.
1. Park the machine on a level surface and lower the cutting units. Make sure
the engine is off and the key switch is in the OFF position.
2. Disconnect the wire harness from the parking brake switch.
3. Check the continuity of the switch by connecting a multimeter (ohms setting)
across the switch terminals.
A. With the parking brake disengaged, there should be continuity (switch
contacts closed) across the switch terminals.
B. Engage the parking brake. There should be no continuity (switch contacts
open) across the switch terminals.
4. Replace the switch if necessary.
5. If the switch tests correctly and a circuit problem still exists, check the wire
harnesses; refer to
6. Connect the wire harness to the switch before returning the machine to
service.
Figure 89
(view from under foot panel)
2. Latch assembly
Appendix A (page A–1).
Page 5–20
(the neutral switch
EUTRAL
Greensmaster 3120
17230SL Rev C