Originally Posted by THE BULL

Good luck sir, the top can be read with diagnostic tooling. The FSM has a thorough guide to follow to manually determine your problem.

The top assembly(Whole thing) brand new is $20,000. You find many of them cheap because how much different the top electronics are vs the 350z.

These unlike the 350z have a boot switch that wont let operation happen if its not making contact. This needs to be checked prior to anything else.

Getting the storage lid to open and close should be your second step. From there you can test the motors and figure out if your issues are motors or sensors/switches not making the necessary contact.

Note: Nissan sensors and switches are pretty stout, even convertible switches as well. Many times is the deterioration and hardening of the top that prevents these sensors and switches to properly make contact.

Good luck!