See post no 7 in the following thread for the location and colour of the wires that you need to connect.
Fiat punto door lock problems.
Punto s central locking failed within a day of fixing ac relay problem i felt happy and thought i will have a trouble free run after i changed ac relay.
But you will see what the problem is as soon as you get inside the door.
In this video i have try.
It will be obvious you will see a disconnected or bent linkage when you look at it.
It used to be tough to lock unlock even manually and had to change the actuators for central lock a couple of times.
There is one wire for each side of the car.
Many owners of fiat linea and punto are facing door locking issues is that door can be open from inside and could not open from out side.
All you need to do is connect the output wires for indicators to the two indicator wires in the wiring loom.
This is a linkage problem inside the door either from the lock to the mechanism itself or the lock itself.
How to fix the the front doors that do not open from the inside on a fiat punto grande 1 4 2006 tools you will need phillips screwdriver small flathead screwdriver alan key torx bit dremel 2.
Quick repair on a 2006 fiat punto grande that both back doors will not open from the outside useing a cable tie.