Toro 41188, Service Manual

Page: 336 / 353

Multi Pro 1750 Page 9 − 26 Ultra Sonic Boom Kit (Optional)
Toro Electronic Controller (TEC)
The Ultra Sonic Boom System includes a Toro Electron-
ic Controller (TEC) to control electrical operation of the
ultra sonic boom system. The TEC is attached to a
mounting plate below the boom lift control manifold
(Fig. 20).
Logic power is provided to the TEC when the vehicle
ignition switch is in the RUN position. A 2 amp fuse pro-
vides circuit protection for this logic power to the TEC.
The fuse is located in the fuse block under the Opera-
tor’s seat.
The TEC monitors the states of the following compo-
nents as inputs: the sonic boom switch, the two (2) boom
lift switches and the two (2) sonic boom sensors.
The TEC controls electrical output to the sonic boom
switch light, the diagnostic lamp, the six (6) hydraulic so-
lenoid coils that electrically control the operation of the
boom lift cylinders and the two (2) sonic sensors. Circuit
protection for the TEC outputs is provided by three (3)
10 amp fuses. The fuses are located in the fuse block
under the Operator’s seat.
The connection terminal functions for the TEC are
shown (Fig. 21). The Electrical power for controller out-
puts is provided through three (3) connector terminals
(PWR 2, PWR 3 and PWR 4) each protected with a 10
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. 22).
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.
The Ultra Sonic Boom Kit electrical schematic and wire
harness drawings in Chapter 10 − Electrical Drawings
can be used to identify possible circuit problems
between the controller and the input/output devices
(e.g. switches and solenoid coils).
Because of the solid state circuitry built into the TEC,
there is no method to test the controller directly. The con-
troller may be damaged if an attempt is made to test it
with an electrical test device (e.g. digital multimeter or
test light).
1
2
1. Boom lift control
manifold
2. Toro Electronic
Controller (TEC)
Figure 20
Figure 21
OUTPUTS
(PWR 2)
OUTPUTS
(PWR 3)
OUTPUTS
(PWR 4)
COMM
PORT
CAN
BUS
GROUND
ANALOG
INPUTS
(VARIABLE)
DIGITAL
INPUTS
(OPEN/CLOSED)
IGNITION
SWITCH
INPUTS
VOLTAGE OUT
12V POWER
(10A FUSES)
12V LOGIC
POWER
(2A FUSE)