Can-Bus Terminator Resistor - Toro Groundsmaster 360 Service Manual

CAN-bus Terminator Resistor

Testing the CAN-bus Terminator Resistor
Groundsmaster 360
16225SL Rev C
g035036
1. CAN-bus terminator resistor
The system communication between the electrical components on the
Groundsmaster 360 machine is accomplished on a CAN-bus communication
system. The 2 specially designed, twisted cables form the bus for the network
are used on the machine. These wires provide the data pathways between the
machine components.
The two 120 ohm CAN-bus terminator resistors plug into the platform wire
harness in the power center assembly behind the operator seat. The resistor can
be accessed by removing the power center cover.
Note: The insulator wedge in the terminator resistor is blue for identification
purposes. There is also a center keyway to prevent the terminator resistor from
plugging into the wrong wire harness connector.
Note: Refer to the Electrical Schematics and Wire Harness Drawings/Diagrams
in Appendix A (page A–1)—Foldout Drawings for additional information on the
location of the terminator resistor and wire connections.
1. The CAN-bus terminator resistor
multimeter (ohms setting). Locate the CAN-bus terminator resistor and
remove the cable tie that secures the resistor to the wire harness. Unplug the
resistor from the wire harness for testing.
2. Use a digital multimeter (ohms setting) to measure the resistance value for
the CAN-bus terminator resistor. There should be 120 ohms resistance
between the terminals A and B. The terminal C is not used.
3. If the testing determines that the CAN-bus terminator resistor is damaged,
replace the CAN-bus terminator resistor.
4. After you complete the testing, ensure that the CAN-bus terminator resistor
is fully installed into the wire harness connector and secured to the wire
harness with cable tie.
Figure 236
2. Keyway
(Figure 236) can be tested using a digital
Page 5–95 Electrical System: Testing the Electrical Components