TAZ 3 Y axis trigger don't stop the motor


I’m encountering a very annoying problem.

When I click on y home button with pronterface the tray does not stop when it reaches the end and try to force to step forward.

Do you have any idea to fix this ?


If you are connected with pronterface, type M119 into the command input line. It should display the status of the endstop. Trigger it manually and then run it again. It should switch from open to triggered. If it does not, then you should take a look at the wiring and make sure that the endstop is plugged in right. Also, make sure your bed wires are not getting in the way of the bed traveling to the back of the y-chassis.

You can swap the x-endstop connector with the y-endstop connector and run the same M119 test to test if it is the board or if it is the harness/switch that is the problem.

Best of luck, let us know if this doesn’t resolve the problem.

If you’d like any assistance with further troubleshooting, contact support at Support@LulzBot.com and we can further identify what’s needed.


thank you for your quick replies. I’ve learned a new command.

I found where the problem came from. It was the Y wire that blocked the trigger.