Multi Pro 1750
Page 5 − 2
Electrical System
General Information
For engine electrical system and component informa-
tion, see the Kohler Engine Service Manual.
For Ultra Sonic Boom Leveling Kit electrical system and
component information, see Chapter 9 − Ultra Sonic
Boom Kit in this manual.
Operator’s Manual
The Operator’s Manual provides information regarding
the operation, general maintenance and maintenance
intervals for your Multi Pro 1750 machine. Refer to that
publication for additional information when servicing the
machine.
Electrical Drawings
The electrical schematics and wire harness drawings for
the Multi Pro 1750 are located in Chapter 10 − Electrical
Drawings.
Toro Electronic Controller (TEC)
Multi Pro 1750 machines use a single Toro Electronic
Controller (TEC) to manage machine electrical func-
tions. The TEC is attached to the control console.
The TEC is a microcontroller that monitors the condition
of various machine switches and sensors (inputs) and
directs electrical power to control appropriate machine
functions (outputs) based on the state of the inputs. The
status of inputs to the controller as well as outputs from
the controller can be monitored with the InfoCenter Dis-
play.
IMPORTANT: Before performing any welding on the
machine, disconnect the battery cables from the
battery, disconnect the wire harness connector
from the Toro Electronic Controller and disconnect
the terminal connector from the alternator. These
steps will prevent damage to the machine electrical
system.
CAN−bus Communications
The Toro Electronic Controller (TEC) communicates
with other electrical components on a CAN−bus com-
munication system. Using this system allows the ma-
chine to fully integrate all the different electrical
components and bring them together as one. The CAN−
bus system reduces the number of electrical compo-
nents and connections used on the machine and allows
the number of wires in the wire harness to be reduced.
The integration of electrical functions also allows the In-
foCenter Display to assist with electrical system diag-
nostics.
CAN identifies the Controller Area Network that is used
on the Multi Pro. Two (2) twisted wires form the bus.
These wires provide the data pathways between ma-
chine components. The engineering term for these two
(2) wires are CAN−high and CAN−low. At the ends of the
twisted pair of bus wires are 120 ohm termination resis-
tors.
Each of the components that is controlled by the CAN−
bus link only needs four (4) wires to operate and commu-
nicate to the system: CAN−high, CAN−low, B+ (power)
and ground.
IMPORTANT: The termination resistors at the ends
of the bus wires are required for proper electrical
system operation.
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