General Information; General Information; Operator's Manual; Can--Bus Communications - Toro Groundsmaster 4100-D Service Manual

General Information

Operator's Manual

The Operator's Manual provides information regarding
the operation, general maintenance and maintenance
intervals for your Groundsmaster machine. Refer to that
publication for additional information when servicing the
machine.
Toro Electronic Controllers (TEC)
Groundsmaster 4100--D and 4110--D machines use two
(2) Toro Electronic Controllers (TEC) to manage ma-
chine electrical functions. The controllers are micropro-
cessor controlled that sense the condition of various
switches (inputs) and direct electrical power to control
appropriate machine functions (outputs) based on the
inputs. Communication between the two Toro control-
lers is provided with a CAN--bus system. The status of
inputs to the controllers as well as outputs from the con-
trollers can be monitored with the Diagnostic Display
(see Special Tools in this chapter).
CAN- -bus Communications
The two (2) TEC controllers (TEC--5001 and
TEC--5002) used on the Groundsmaster 4100--D and
4110--D communicate with each other on a CAN--bus
system. Using this system allows the traction unit to fully
integrate all the different electrical components of the
machine and bring them together as one. The CAN--bus
system reduces the number of electrical components
and connections used on the machine and allows the
number of wires in the wire harness to be significantly
reduced.

Electrical Drawings

The electrical schematic and wire harness drawings for
the Groundsmaster 4100--D and 4110--D are located in
Chapter 10 -- Foldout Drawings.
Electrical System
The controllers appear identical but they are different in
terms of the connectors and internal hardware. They are
arranged in "master / slave" configuration and therefore
cannot be interchanged. The TEC--5002 master control-
ler is responsible for powering up the TEC--5001 slave
controller. The TEC--5002 also controls the engine start
circuit.
IMPORTANT: Before performing any welding on the
machine, disconnect the battery cables from the
battery, disconnect the wire harness connector
from both Toro Electronic Controllers and discon-
nect the terminal connector from the alternator.
These steps will prevent damage to the machine
electrical system.
CAN identifies the Controller Area Network that is used
between the controllers on the Groundsmaster. Two (2)
specially designed, twisted cables form the bus. These
wires provide the data pathways between the control-
lers (TEC--5001 and TEC--5002) used on the machine.
The engineering term for these two (2) cables are CAN--
high and CAN--low. At the ends of the twisted pair of bus
cables are 120 ohm termination resistors.
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.
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