Shock Question

I just picked up a actuator to replace one that was frozen. Before I put this one on, is there a way to check to see if the gear on top of the shock still turns? Don't know why my actuator failed and don't want to burn another one. The gears on the previous actuator were intact but the motor was frozen.

 

I'll give that a try. Are their any marks to aline anything with so that they are all set the same? I'm assuming that due to the failure of one actuator, they are all set on the middle setting until I clear the code. If I start turning anything, will it change the settings?

Does this type of unit "self test" (like on some Corvettes) and know where it is at so you don't have to worry about setting an alignment?

 

Thanks for the help. I should have things back up and running tomorrow if the replacement actuator works.