Can Bus Terminator Resistor - Toro Workman GTX Electric & Lithium Service Manual

CAN bus Terminator Resistor

System communication between various electrical com-
ponents on the Workman GTX Electric Lithium ma-
chines is accomplished on a CAN bus communications
network. Two specially designed, twisted wires form the
CAN bus. These wires provide the data pathways
between the components on the network. The engineer-
ing term for these cables are CAN High and CAN Low.
The CAN bus wires are red/white (CAN High) and black/
white (CAN Low).
A120 ohm CAN bus terminator resistor is located at the
rear of the operator's dash. Refer to the wire harness
drawings in Chapter 6 -- Electrical Drawings for addition-
al information on CAN bus terminator resistor assembly
location.
Testing
1. Park vehicle on a level surface, turn key switch to
OFF, engage the parking brake and remove key from
the key switch.
2. Raise the hood and locate the CAN bus terminator
resistor assembly that is to be tested.
3. Disconnect the CAN bus terminator resistor from the
machine wire harness.
4. Check the resistor and resistor holder for damage or
corrosion and clean or repair if necessary.
5. Use a digital multimeter (ohms setting) and measure
the resistance across the pins of the CAN bus terminator
resistor. There should be 120 ohms resistance between
the terminal 1 and 2.
6. If testing determines that the terminator resistor is
faulty, replace resistor.
7. After testing is complete, make sure that the termin-
ator resistor is fully installed into the connector and se-
cured to the wire harness.
8. If the resistor test correctly and a circuit problem still
exists, check the CAN--bus; refer to CAN bus testing,
wire harness drawings in Chapter 6 -- Electrical Draw-
ings for additional information, or contact an Authorized
Toro Distributor for assistance.
9. Lower and secure the hood.
Workman GTX Electric Lithium
1. CAN bus terminator
resistor
Page 3B - - 45
2
1
3
Figure 49
2. Connector P57
3. Display
Pin 1
Figure 50
Electrical System
Pin 2