How do you troubleshoot Tadano crane error code 122 related to CAN bus communication fault?
Error code 122 indicates CAN bus communication failure between crane control modules. Check wiring connections, fuses, and module power supply first.
Tadano error code 122 specifically points to a Controller Area Network (CAN) bus communication fault between the main control unit and peripheral modules such as the boom angle sensor, load moment indicator, or engine control unit. Begin troubleshooting by verifying all CAN bus connector pins are clean, properly seated, and free from corrosion. Check the 120-ohm terminating resistors at both ends of the CAN network using a multimeter, you should read approximately 60 ohms between CAN-H and CAN-L with power off.
Remember: "CAN-122: Check Connections, Amperage, Networks - Wire, Fuse, Power in that order"
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