10.6 | CANBUS / Communication Issues
| Issue | Possible Cause | Recommended Action |
|---|---|---|
| CANBUS not detected | Incorrect CANBUS connection point | Verify connection to correct tractor CANBUS |
| Intermittent communication | Damaged CANBUS harness | Inspect harness and connectors |
| ECU offline | ECU power issue | Verify ECU power and ground connections |
| No communication with VM controller | Incorrect baud rate or address configuration | Verify J1939 configuration |