Drive Side headlight not working

Hey everyone,
My drivers side headlight is completely out. I tried changing the bulbs, didn’t fix the problem. Just changed my fuses & still not working. My passenger side headlight is working fine. Any more tips or tricks I can do to fix it? Thanks!

 

Check for voltage at the connector. Start chasing wires till you find voltage. Any rodent damage present?

 

Check the connector at the headlight housing to make sure it didn’t come off somehow. Does anything else on that side work? Turn signal, DRL?

 

Swap the passenger side bulbs with them. That'll tell you what's up.

 

Yes my turn signal works

 

Does it have LED headlight bulbs? If so they may not work unless you flip the connector and plug it in.

 

First we are assuming you have OEM headlights, please let us know if that is incorrect.

Second, you need to check for voltage at the connector. If you have voltage at the connector (which I suspect you will) the problem is with the mechanical connection between the connector and bulb. This also will rule out fuses, relays, wiring, etc.

 

Same issue, opposite side for me.
No juice at connector when lights on.
Juice present at hot side fuse.
Both L&R fuses swapped and also checked for ohm good.
High beams work both sides.
All other exterior lights are fine.

 

Main "Hot" fuse for low & high beam, left & right fuses, relays, connectors and wire.

If only one side turns ON, then wires from relay to connector, these are hidden in the fuse/relay box in engine bay and inside the harness to the headlamps.

 

Great diagrams, added to my growing collection. Thank you.
Spent a bit this morning going back over my checks, and then I got slapped by a branch on the dumba$$ tree…
Looking at the fuses, I realized that the two I thought were the individual right side - left side fuses for each low beam were actually the driver side low beam and back-up lights.
All are 10A fuses, and the passenger side was missing - no idea why (I just bought this truck).
My mind must have accepted the missing fuse as one of the often-left blank slots for options I don’t have… I mean who just removes a critical fuse?
At any rate spare 10A fuse installed and PFM, my low beam now works.

 

Well poo! I came out of the store the other night and noticed that my passenger low-beam headlight was out... and after spending $24 on a new bulb (and stupidly tossing away the supposedly bad bulb) it appears that I'm having this very same issue on my 2019 DCLB w/ stock headlights.

I'm grateful for this thread! Thanks for starting it and for the addition of the wiring schematics & fuse photos and locations.