Toro Groundsmaster 4500-D Series Service Manual page 331

Toro Electronic Controllers (TEC) (continued)
Groundsmaster ® 4500-D/4700-D
19245SL Rev A
g309762
The TEC 1 controller monitors the states of the following components as inputs:
ignition switch, traction pedal position sensor, parking brake switch, automatic
switch, seat switch, swash plate sensor, cruise control switch, PTO switch, center
cutting deck lift switch, cutting deck position switches (decks 1 and 2), hydraulic
temperature sender and hydraulic pressure transducer.
The TEC 1 controller controls electrical output to the engine electronic control unit
(ECU) (start and run functions), fan drive solenoid coils (direction and speed),
traction (piston) pump solenoids (forward and reverse), traction solenoid coil
(Auto/LOW speed), PTO solenoid coils (decks 1 through 5), center cutting decks
raise/lower/float (decks 1 through 5) and counterbalance. Circuit protection for
front TEC outputs is provided by four (4) 7.5 amp fuses (A−1, B−1, C–1 and D−1).
On Groundsmaster 4700−D machines, the TEC 2 controller monitors the states
of the following components as inputs: ignition switch, cutting deck lift switches
(decks 6 and 7) and cutting deck position switches (decks 6 and 7).
The TEC 2 controller controls electrical output to the PTO solenoid coils (decks 6
and 7), cutting decks raise/lower/float (decks 6 and 7). Circuit protection for rear
TEC outputs is provided by four (4) 7.5 amp fuses (A−2, B−2, C–2 and D−2).
The InfoCenter display should be used to check inputs and outputs of the TEC
controllers. Information on using the InfoCenter is included in the InfoCenter
Display section of this chapter.
Figure 210
TEC 1 Controller
Page 6–49 Electrical System: Component Testing