Alarm: Homing fail. Y axe doesn't moves

[LarryM]

You can use this information to determine what grbl sees when the homing switches are pressed.

Since you are using version 1.0c you will not see LIM label, but you will see PINS: in the status report.

[Guide] Using Grbl to debug your homing switches

If you are having difficulties with your homing switches you can do a quick test with Grbl to see what the state of the homing switches is from Grbl’s point of view. NOTE: In order to use this procedure you need to have grbl Version 0.9j or later installed on your Arduino. To do so, you use the Grbl status immediate command ? (question mark). This command asks Grbl for its current value of some of its state information. For the purpose of this article we are interested in the homing switch stat…