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Groundsmaster 4100--D/4110--DPage 5 -- 2Electrical System
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 and sensors (inputs). The controllers then dir-
ect electrical power to control appropriate machine func-
tions (outputs) based on the input state. Communication
between the two (2) TEC controllers, the Yanmar engine
electronic control unit (ECU) and the machine InfoCen-
ter Display isprovided with a CAN--bus system. The sta-
tus of inputs to thecontrollers as well as outputs from the
controllers can be monitored with the InfoCenter Dis-
play.
The TEC controllers are attached to the machine under
the power center cover next to the operator seat. The
TEC controllers are visually identical but they have dif-
ferent software and therefore cannot be interchanged.
IMPORTANT: To prevent machine electrical system
damage while welding on the machine, disconnect
the battery cables from the batteries, disconnect the
wire harness connectors from both Toro Electronic
Controllers, disconnect the wire harness connec-
tors from the engine electronic control unit and dis-
connect the terminal connector from the alternator.
Also, disconnect and remove the engine ECU from
the machine before welding.
1. Front TEC controller
2. Rear TEC controller
3. Operator seat
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