No turn signals or hazards

[Brandoncw]

As the title reads, I have no turn signals or hazards. 2002 4.0
I've checked all the fuses in the cabin fuse box. None missing or burnt.
I replaced the blue flasher relay. Is there a module that could be bad? Or do both hazards and turn signals run through the MFS? Anyone know how to test them?

 

[Brandoncw]

I have power at the relay fuse and the relay. I can give power to the left and right turn signal light fuse and they both will light up so I certain the wiring leaving the cab to the lights is good, and the wires leading to the relay is good

 

[Terrys87]

You are working on a way new truck then me. Mine is an 88. I have been running into similar issues. Just this weekend, I had to replace my bulb assembly. Corrosion was just bad and looking iside the socket assembly it was jus disentgrating. I got a replacement from Dorman for $13. You might be able to get in there just give it a good scrubbing and see if corrosion is giving you a problem.

 

[Brandoncw]

You are working on a way new truck then me. Mine is an 88. I have been running into similar issues. Just this weekend, I had to replace my bulb assembly. Corrosion was just bad and looking iside the socket assembly it was jus disentgrating. I got a replacement from Dorman for $13. You might be able to get in there just give it a good scrubbing and see if corrosion is giving you a problem.

I remembered I had a junk parts truck and yanked the multi-function switch out to try swapping it. When I pulled the cover off my truck with the issue, I found out someone had already replaced it before and broke a clip holding the plug in and it was just loose
A little super glue and good to go