| CANBUS communication unavailable |
CANBUS harness disconnected |
Verify CANBUS harness connections and adapter installation |
| CANBUS communication unavailable |
Incorrect CANBUS connection point |
Verify COMMAND is connected to the intended tractor or implement CANBUS |
| CANBUS communication unavailable |
Incorrect CANBUS adapter used |
Verify the correct CANBUS adapter harness is installed |
| CANBUS communication unavailable |
Incorrect CANBUS baud rate |
Verify CANBUS network baud rate matches the connected system |
| CANBUS communication unavailable |
CANBUS network not powered |
Verify the tractor or external controller CANBUS network is active |
| CANBUS communication intermittent |
Loose connector or damaged harness |
Inspect CANBUS harnessing and connectors |
| CANBUS communication intermittent |
Poor CANBUS termination |
Verify correct CANBUS termination resistance and network layout |
| CANBUS communication intermittent |
Electrical noise interference |
Inspect harness routing and grounding quality |
| CANBUS devices not detected |
Incorrect CANBUS network selected |
Verify connection to the correct tractor or implement CANBUS |
| CANBUS devices not detected |
Incorrect device address or configuration |
Verify controller addressing and network configuration |
| No communication with VM controller |
VM controller not powered |
Verify VM430/431 power supply and startup status |
| No communication with VM controller |
Incorrect VM controller configuration |
Verify VM controller addressing and communication settings |
| No communication with VM controller |
Incorrect J1939 configuration |
Verify J1939 network settings and compatibility |
| J1939 joystick not detected |
Incorrect CANBUS connection |
Verify joystick connection to the intended CANBUS network |
| J1939 joystick not detected |
Unsupported joystick configuration |
Verify joystick compatibility and configuration |
| Tractor SCVs not responding |
Incorrect tractor CANBUS connection |
Verify COMMAND is connected to the correct tractor CANBUS |
| Tractor SCVs not responding |
Unsupported tractor configuration |
Verify tractor compatibility and supported interface type |
| Tractor SCVs operate incorrectly |
Incorrect CANBUS message configuration |
Verify configured hydraulic interface type and machine profile |
| CANBUS communication unstable during operation |
Excessive network traffic |
Verify no unsupported devices are connected to the network |
| CANBUS communication unstable during operation |
Incorrect network topology |
Verify CANBUS backbone and branch connections |
| CANBUS devices intermittently reboot |
Unstable power supply |
Verify ECU, controller and CANBUS power supply stability |
| ECU offline |
ECU power or ground issue |
Verify ECU power, ground and fuse connections |
| ECU offline |
ECU firmware mismatch |
Verify ECU firmware version compatibility |
| External controller communication lost |
Incorrect controller software version |
Verify external controller software compatibility |
| Multiple CANBUS systems behave unpredictably |
Connected to incorrect CANBUS network |
Verify COMMAND is isolated to the intended CANBUS network |
| Multiple CANBUS systems behave unpredictably |
CANBUS bridging or adapter issue |
Inspect adapters and network interconnections |
| CANBUS diagnostics unavailable |
Incorrect diagnostic connection point |
Verify diagnostic adapter connection and network selection |
| CANBUS diagnostics unavailable |
Unsupported CANBUS protocol |
Verify compatibility with the connected CANBUS system |
