Always troubleshoot the motor from the Manual screen. Run it at least 5 seconds in each direction. Press the “i” button for a detailed view. If the robot gives an alarm, check the troubleshooting guide for that specific alarm.
Does the position counter change? If not, check the pulse signal and power cables.
Does the function move physically? If not:
Does any sound come from the motor? If it does, the function could be physically stuck or the gear can be damaged. No sound? Check cables
Does the motor draw any current? If not, check the cables.
Check that the emergency stop button is not pressed down
Spray connectors with 5-56 or WD-40
If you have access to a spare motor you can connect it temporarily to the connector in order to troubleshoot the function. Remember to ground it properly, e.g. by holding a motor metal part against robot chassie