Toro Electronic Controller (Tec) - Toro Multi Pro 1750 Service Manual

Toro Electronic Controller (TEC)

Multi Pro 1750 machines use a Toro Electronic Control-
ler (TEC−5001) to control electrical system operation.
The TEC is a microcontroller that monitors the condition
of various switches and sensors (inputs). The controller
then directs electrical power to control appropriate ma-
chine functions (outputs) based on the state of one or
more inputs. The controller is attached to a bracket un-
der the control console (Fig. 30).
Logic power is provided to the controller as long as the
battery cables are connected to the battery. A 2 amp
fuse provides circuit protection for this logic power to the
controller.
The TEC−5001 monitors the states of the following com-
ponents as inputs: ignition switch, boom switches (mas-
ter, left, right and center spray), clutch switch, spray
pump switch, neutral switch, service brake switch, seat
switch, parking brake switch, throttle home switch,
transaxle speed sensor, spray system flow meter, brake
pressure switch and optional rinse circuit switch (if
equipped).
The TEC−5001 controls electrical output to the engine
start relay, engine kill relay, engine carburetor solenoid,
spray pump clutch, spray pump running indicator light,
throttle lock coil, throttle lock indicator light, master
boom valve and brake lock system. Outputs from the
TEC are also used for the rinse pump relay and brake
light (if equipped). Circuit protection for TEC outputs is
provided by three (3) 7.5 amp fuses.
The InfoCenter display should be used to check inputs
and outputs of the TEC. Information on using the In-
foCenter is included in the InfoCenter Display section of
this chapter.
The connection terminal functions for the TEC are
shown (Fig. 31). Note that electrical power for controller
outputs is provided through three (3) connector termin-
als (PWR 2, PWR 3 and PWR 4) each protected with a
7.5 amp fuse. A fifty (50) pin wire harness connector at-
taches to the controller. The layout of the wire harness
connector that plugs into the TEC is shown (Fig. 32).
IMPORTANT: When testing for wire harness con-
tinuity at the connector for the TEC, take care to not
damage the connector pins with multimeter test
leads. If connector pins are enlarged or damaged
during testing, connector repair will be necessary
for proper machine operation.
Electrical System
1. Control console
12V POWER
(7.5A FUSES)
12V LOGIC
POWER
(2 AMP FUSE)
VOLTAGE
OUT
IGNITION
SWITCH
INPUTS
DIGITAL
INPUTS
(OPEN/
CLOSED)
ANALOG
INPUTS
(VARIABLE)
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2
Figure 30
2. Toro Electronic
Controller (TEC)
Figure 31
Multi Pro 1750
1
OUTPUTS
(PWR 2)
OUTPUTS
(PWR 3)
OUTPUTS
(PWR 4)
COMM
PORT
CAN BUS
GROUND