11
CAN Troubleshooting
Although the control algorithm is located within the CAN node(s), the same
troubleshooting techniques that apply to traditional hard wired control systems still
apply to a CANbus control network. CAN allows for modularization of the control
system, but the behavior of the system remains the same. Flow and speed
sensors, the control valve and any boom valves, are used in the same manner.
The following are some common causes for communication failures:
Issue
Possible
Cause
Solution
Console or
CANbus cannot
find nodes
Switch Box is
not properly
connected
Check switched power connection.
Check the CANbus connection to the
Switch Box and reinitialize the console
to detect the Switch Box nodes.
Ensure console is powered on.
No power to
Switch Box
Check chassis cable power and ground
connections.
Weak or dirty
power to CAN
nodes
Verify at least +10V DC is present on
the switched power connector.
Corrosion in
CAN
connections
Disconnect and clean the cable
connections
CANbus not
terminated
properly
Check the CAN Terminator(s)
