Excavator monitor powers up but shows no information: what does a CAN communication fault suggest?
Short Answer
If the excavator monitor powers up but shows no machine data, and there is a CAN communication fault, the display may not be the only problem. Check CAN high/low wiring, controller power, ground, terminating resistance, harness damage and connector corrosion before ordering a monitor or ECM.
What To Check
- Confirm whether the monitor has power but no data, no throttle control or no hydraulic functions.
- Check CAN wiring, controller power and ground with the correct diagram.
- Match monitor or controller replacement by part number, serial number and connector layout.
Related JIAJUE Parts
Send the machine model, serial number, old part label and clear connector photos before ordering electrical parts so JIAJUE PARTS can help reduce wrong fitment.
Source Record
This question was selected from a Google-visible industry discussion result for the keyword excavator CAN communication fault monitor no information. The answer is rewritten from JIAJUE parts-matching and sourcing practice, not copied from the source page.
