Hazard problem

Hello, I am working on a fierce Daihatsu 1.6 of 1993, and has a problem with the hazard.
The flashing works correctly from the telecomando, but when the hazard acivar sounds the flashing, but does not turn on any light, so that they turn on you have to put the intermittent from the telecoming for any of the directions and there the hazard works correctly ...
I am with the doubt that it can be ... Any idea?