2001 XJ: Low and high beams NOT working! Good fuses. Parking/tail lights are working. Grounds by airbox good. Earlier today, headlight delay was making a buzzing noise. Currently have Inspired Engineering LED's. Could my switch really have failed all of a sudden or something else?? Also blue highbeam indicator does not illuminate when turn signal switch is pushed forward or back.

 

I must have the million dollar question. Stumped everybody!

 

Not stumped... your turn next... Did you try a new relay? or check the juice to the relays?

 

its a sunday in sumertime, everyone is out doing things.

the switches are prone to going out, but check fuses and relays as said above.

 

I cannot find an actual black relay for the headlights. I have checked the 30amp fuse under the hood as well as those 10a's in the passenger kick panel. I have the headlight switch pulled out currently, was trying to find a way to test and see if that's the problem. I know I'm getting no power to the headlight plugs (lights). Will the headlights work if I unplug the headlight delay module?

 

You have to pull the knee blocker from under the dash on the driver's side. The relay is located behind this up under the instrument panel. It is a first check as you know. The switch could also be bad if you are not hearing a positive "click" when changing it.

 

not my pic

 

Could you explain this a little more:

My knee panel is removed, what exactly am I looking for and where?
What click are you talking about?

 

The panel under the driver's side dash and steering wheel needs to come off. Behind that you will find the relay up under the instrument panel. It will be a typical black square relay.

The "click" would be when you pull and change the High/low beam switch. If there is no Click then something is broken in the switch.

Every high/low switch I have come across makes an audible click when changing. Except a few Toyota's Nissans, and VW's over the years.

 

I do hear an audible click when I pull the turn signal stalk towards me to activate (or should activate) the highbeams. I don't hear any relay clicks from the passenger floor (idk if i am supposed to though). I think I see the relay you're talking about. Is it located just left/next to the headlight delay module, attached via one of those V headed clips? See next post as well..

 

I took out the headlight switch and jumped it up to the battery. I found the following:
-The switch actually has labeled numbers or letters next to each prong ("U" "B1" "B2" "B3" "P" "H" "D" "I"
-I attached the ground from the neg battery terminal to neg on switch. I attached positive jumper from positive terminal to "U" on switch. Based on diagram above, "U" is 12v from battery. I then used a meter and found the Parking Lights, Dome Lights, and Brake Lights are receiving power (and are working fine). However, when attaching the positive lead to the Headlight prong "H" I get NOTHING on the meter.

I am guessing bad switch? Did I figure this out!!!???!!!???

 

Sure sounds like you got it man. It wouldn't be the first time a working new part was actually a bad not working part. lol. Please let us know if this was it!

 

New switch, same problem Still fecked. Where are all the ground locations for the headlights?
could this be the headlight delay module (as it was buzzing loudly), or turn signal switch?

 

Let's go at this a different way:
Have they ever?

Does this vehicle have DRL?

 

Yes of coarse they have worked . No to DRLs.