Pto Switch; Brake Switch - Cub Cadet 2000 Series Professional Shop Manual

PTO Switch

Figure 7.6
3. In C-Com, power is supplied to the PTO switch from the A1 terminal of the ignition switch through a red wire.
When the PTO switch is turned on, this completes the circuit to allow power to go to the PTO clutch. It is a nor-
mally opened (NO) set of contacts.
NOTE: The top terminals are showing normally closed at rest and the middle terminals are normally open at
rest.
NOTE: There are three contacts on the right side in the C-COM. For this application the normally opened (NO)
contact is used.

Brake Switch

Brake switch
Steering housing
Figure 7.7
Understanding the PTO switch
1. A-COM is in the starter inhibit circuit. It is a normally
closed (NC) set of contacts. Power coming from the
brake switch (key switch in START, brakes ON) flows
through the orange wire with black trace to the PTO
switch. When the PTO is OFF, and the contacts are
closed, the power continues through the orange wire
with white trace to the trigger terminal on the starter
solenoid.
2. B-COM is in the PTO relay latch circuit. It is a nor-
mally opened (NO) set of contacts. The yellow wire
with a black trace is connected to the RMC module
and the coil of the PTO relay. When the PTO switch is
in the "ON" position, the yellow wire with a black trace
is connected to the white wire with a black trace. If
the PTO relay is energized, a ground signal will pass
through the white wire with a black trace to the yellow
wire with a black trace keeping the relay energized.
The brake switch is mounted on the frame plate, to the
left of the steering housing. See Figure 7.7.
• When the brake pedal is depressed, a bell crank
on the brake pedal shaft operates the brake
switch. The switch contains two sets of contacts.
• A normally open (NO) set of contacts is in the
starter inhibit circuit. When the parking brake is
set, the contacts are closed, power coming from
the key switch (key switch in START) through the
orange wire is passed on to the PTO switch
through the orange wire with black trace.
• A normally closed (NC) set of contacts is in the
safety shut-down circuit. The yellow wire with a
white trace carries a ground signal from the seat
switch (seat is empty). Setting the parking brake
closes the contacts, passing the ground signal
through the yellow wire to the magneto primary
windings.
• The yellow wire with a white trace leads to one ele-
ment of the seat switch. If the seat is vacant and
the pedal is up, the engine will turn off.
Electrical System
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