Tec Controller Logic Chart - Toro GroundsmasterR 4300-D Service Manual

TEC Controller Logic Chart

Each line of the following chart identifies the necessary
component position (INPUTS) in order for the TEC con-
troller to energize the appropriate OUTPUTS for ma-
chine operation.
KEY TO CHART
X Component (Input) Position
Not Relevent for Function
P Component (Output) Energized
MACHINE FUNCTION
Start (No Operator in Seat)
Start (Operator in Seat)
Run (No Operator in Seat)
Run (Operator in Seat)
Lower Cutting Units to Ground
Mow (C.U. on Ground)
Raise (from Mow to Turn Around Position)
Lower/Mow (from Turn Around Position)
Raise (to Transport Position)
Diagnostic Light Fault Retrieval
Clearing Faults (From Retrieval Mode)
NOTE: For Start machine function, the joystick must be
in the neutral (center) position and the PTO switch must
be OFF.
NOTE: When the Lower/Mow machine function is
completed, the front cutting decks engage while lower-
ing to the ground followed shortly by the rear cutting
decks engaging while lowering to the ground. The timing
of this sequence is provided by the TEC controller.
Groundsmaster 4300--D
Example: To start the engine with no operator in the
seat, when the ignition key is in start, the traction pedal
is in neutral and the parking brake is applied, the glow
plugs and other necessary engine starting components
will be energized.
Preheat X
X X X
X X X
X X X X
X X X
X
X X X
X X
X X X
X
X X
X
NOTE: The Diagnostic Light Fault Retrieval ma-
chine function requires that the seat be unoccupied, the
mow speed limiter be in the TRANSPORT position, the
PTO switch be OFF and the cutting decks be in the low-
ered, mow position.
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X X P P P
X X
P P
X X X P
X X X P
P P
X P
X
X X
P
P P
P P
P
P
P
P P
P
P
P P P
P
Electrical System