BRAKE LIGHTS NOT WORKING..

[huntin5L]

So my brake lights are not working, my 3 brake light (wing) works, but the brake lights are not working when i step on the brake. I looked for a switch under the brake pedal and there is nothing there. I checked my 20 amp fuses and they are all fine. Is this a blown lamp failure box? I took it out and took it apart and everything looked real clean and all solder points were fine. I swapped out the bulbs and it is still not working. My turn signals work and my rear tails work when my headlights come on if that helps. It is only when I step on my brake that i am getting nothing. lmk.

 

[veedubin]

So my brake lights are not working, my 3 brake light (wing) works, but the brake lights are not working when i step on the brake. I looked for a switch under the brake pedal and there is nothing there. I checked my 20 amp fuses and they are all fine. Is this a blown lamp failure box? I took it out and took it apart and everything looked real clean and all solder points were fine. I swapped out the bulbs and it is still not working. My turn signals work and my rear tails work when my headlights come on if that helps. It is only when I step on my brake that i am getting nothing. lmk.

study the wiring diagram for the brake light ckt. Just going out on a limb here, and with out seeing the diagram myself.... if the feed for all 3 brk lights come out of the lamp failure module, i'de say there is probably a brken wire or a broken splice somewere after the lamp module.

 

[huntin5L]

yeah im gonna buy a lamp failure module for 15 bucks from a member here. Cheap enough to try.

 

[mk3supra]

Let us know what you find

 

[jsnowman76]

i had the same problem about a year ago and I came across this on supracentral.com

this is an option if you just want to get rid of the box and rewire around it.

the only down side to this is the "light failure box" light wont work in your dash anymore.





http://www.supracentral.com/index.php?option=com_content&task=view&id=35&Itemid=42

 

[PROJECT N00b]

well, i got a question too, my reverse lights work sometimes...not all the time.

 

[huntin5L]

Yeah i know about the rewire, but i would rather do it right to see if that is it before i start hacking up the wires

 

[cuel]

Sounds like the failure box, and not the brake light switch, as you said the 3rd light is still working.

 

[Kruso]

If the switch near the brake pedal goes out, the lights remain on continously (I'm not talking about exception to the rules which I have yet to witness on any car). If the lights are not working at all, you need to check your fuses, the odds are something is blown. Check both near the driver side kick panel and under the hood.

Kruso

 

[huntin5L]

I can't find any switch by the brake pedal and i stuck my head under there as far as i can go, where is it? I checked all the fuses and they are all fine. Also, what am i checking under the hood, which fuse?

 

[huntin5L]

I don't think any of the fuses under the hood would be the issue. Look at the diagram.

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=BE&P=14

 

[Kruso]

I will check today on mine to see if I can find the right fuse in question.

 

[huntin5L]

From the diagrams i saw it is the kick panel on the inside of the car where the 15amp fuse is. I checked all 15 amp fuses and none of them are blown.

 

[huntin5L]

Anyway i installed another used lamp failure box and it works, but the light on my dash is still on for whatever reason i can't figure it out. Ahhh!

 

[Poodles]

probably the wrong failure box...

the N/A failure box will trip the failure light because the LED's 3rd brake light doesn't pull enough amps...

 

[boostinprine]

sounds like broken wire. try using a connectivity tester, or test light and trace the wires back

 

[Kckazdude]

http://www.supramania.com/forums/showthread.php?t=46770

Lots of information about your lamp failure relay.

http://www.supramania.com/forums/showthread.php?t=58560

Fixing the corrosion problem in the tail light boards.

 

[james_9876]

Okay, I had the same problem!!! There's one wire that comes into the Lamp Failure Box (LFB) from the brake switch to feed the wires. Then two leave to the seperate lights.

What happen to me. Checked everything, wire, bulbs, connectors, everything was fine. So I'm like 'alright, now what?'. So I took the LFB out and took the circuit board out and took my DMM, set it to Ohm's and checked continuity from the pin to the solder. No continuity. Re heated the solder and got continuity.

Cliff notes:

Check the pin to Solder connections on the circuit board in the Lamp Failure Box.

 

[huntin5L]

hmmmm..interesting. I think poodles though may be on to something, because the box i got was a yellow one and mine was white. But, maybe the box is just discolored from age I didn't look at it that closely though.

 

[Poodles]

it will say right on it if it's for LED's or not...