Can Bus - Toro Greensmaster eFlex 1021 Service Manual

CAN bus

Testing the CAN bus
Electrical System: Testing the Electrical Components
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1. DIAG connector
The machine controllers communicate with each other on a Controller Area
Network (CAN) bus system. Using this network allows full integration of all the
different electrical components of the machine, allowing them to operate 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.
The InfoCenter, lithium-ion battery controller (BMS - Battery Management
System) and TEC are on the CAN bus. Additional controllers may be added
to the CAN bus in the future through the expansion port connector and/or the
telematics connector.
Each of the components that is controlled by the CAN bus link only needs four
(4) wires to operate and communicate to the system: CAN High, CAN Low,
power and ground. The key switch needs to be in the RUN or START position
for the components on the network to be activated.
Two specially designed, twisted wires form the CAN bus. These wires provide
the data pathways between the components on the network. The ering term for
these cables are CAN High and CAN Low. The CAN bus wires are red/white
(CAN High) and black/white (CAN Low). At each end of the CAN bus is a 120
ohm termination resistor; refer to
1. Park the machine on a level surface and make sure that the clutch bail in the
NEUTRAL position. Turn the key switch to the OFF position and remove
the key from the key switch.
2. Disconnect the battery pack; refer to
(page 5–3).
3. The Toro DIAG connector is located inside the upper cover assembly; refer
to Figure 49.
Figure 49
2. Hour meter
CAN-bus Terminator Resistor (page
Connecting the Lithium Battery Pack
Page 5–24
5–39).
Greensmaster ® eFlex 1021
20248SL Rev A