how can i fix renault c/locking?

hi i have a clio 3 1.6 petrol 2007 3 door the boot locks but not the doors ,the light comes on ,the fuse is ok,the door closed sensors work,the trouble started when it rains i got locked in the car, when it drys out all was ok,first the passanger door stoped locking and now the driver door will also not lock,i dont have a wiring diagram any help welcom thanks