Your problem very well could be the hazard switch. i have a 1994 honda civic too i found whenever i disconnected the hazard switch from the wiring harness my turn signals brake lights and of course hazards do not work. Maybe replace the hazard switch..
My research to date finds that the turn signals and hazard signals are controlled by a common relay. That relay is behind the hazard relay switch. My 2002 Audi A6 has the same symptoms you describe, and I will be removing the hazard switch to get at the relay for replacement. Good luck.
Check the fuses and it may be the flasher relay as they have 2 try turning the hazard lights on and off a few time as you relay may be stuck.
You probably have a bad turn signal flasher (or relay, as it's called in some cars)
If your hazard lights don't work but your turn signals do work it could be that your Hazard Lamp Flasher needs to be replaced. Your car has both a "hazard lamp flasher" and a "turn signal lamp flasher". Your "turn signal lamp flasher" is working but your "Hazard Lamp Flasher" may not be working. Buy a new "hazard lamp flasher" and install it. The hazard lamp flasher is located behind the instrument panel to the left of the steering column.
It is the turn switch in the colomn. Replace the switch and the prob will be solved.
Fuse or 4 way flasher unit there are 2 flashers on for turns one for 4 ways
the turn signal flasher may be the problem moast vehickles have one forturn &one for 4way
I had a similar problem with my 1991 Maxima. The dashboard lights did not work. I could not find a fuse. Then I noticed the parking lights did not work. I could not find a fuse. Finally I noticed the tail lights did not work. I checked the fuse and it was burnt. After replacing it all is okay again.
possibly the fuse for brake lights......also could be brake light switch----turn signal switch----broken wiring anywhere in the vehicle---relay not working ---any other item specific to your venicle.
Most vehicles have two flasher units. One for the turn signals and one for the hazards. If you have already replaced one try looking for the other one. Or check for a bad trunsignal switch
I replace my flasher fuse.Now they light up but won't blink.