Toyota Corolla box-automatic

Hello, cordial greetings to whom to read, my problem is in an automatic transmission I have arrived a Toyota Corolla 2002 Don the gear lever is a hard place I have no chec pilot on and in this type of boxes I have little experience, I need a guide to review or possible cause of the problem in advance thanks.

Hi Sorto , the hard lever to move it ... most likely: piolas or drive cables in poor condition. Disconnect them and move them by hand, they must advance freely, without blocking. The other thing that I have seen is the accidental introduction of excess objects, by the lever system. If the above is OK you must check the exchange axis (where the AT range sensor goes), you must also turn freely. If you disconnect the piolas, they are 2, you must leave both free, acting on the regulations. A cordial greeting.