Bafang won’t run

[Carrie]

Hi
I have a Bafang M400 , C07 Display
problem:
no fault codes , light works also walking mode but won’t run
changed the motor controller , no result
any ideas?

 

[AHicks]

One of the brake switches?

 

[Gionnirocket]

One of the brake switches?

Thought that initially, but walk mode works. But I would still try disconnect them.
Check all connections and if all looks well, I'd try another display next