Sorry to be so late getting back with you. I have been ill. Anyways start by checking the hazard lights operation. If it is still inoperative , check the bulb and the current going to it. Power should be present on the Dark Green wire with either a Red or Brown tracer with the turn signal or stoplights on. Ground should be present at the Black wire at all times. If there is no power the most likely cause would be a faulty combination flasher. This is especially true if the front turn signal on the left/driver’s side works properly.