Low Beam headlight blowing 15a fuse - Toyota Nation Forum : Toyota Car and Truck Forums

eaglexkr · 10-29-2009, 06:47 PM

My low beam on the left side was not working so I replaced the lamp,nothing.I check the lamp by putting it into the right side and it worked.I then checked the fuse(position 25)and the 15a fuse was blown.I replaced the fuse and the light flicker and nothing,Blew another fuse.Changed lamp and fuse,nothing except another blown fuse.It 2007 Camry SE which I have owned since new and this is my first problem,any help would be great.

njerald · 10-29-2009, 07:24 PM

A short in the left side wiring/connectors/bulb seat.

If you are just a parts changer, take it to someone with a clue....

eaglexkr · 10-29-2009, 08:19 PM

This weekend I be out there with the meter,just printed out the diagrams from Alldata.
Just thought someone might have had a similiar problem,but just got someone that likes to post and clueless.

workerant · 10-29-2009, 08:32 PM

hahah.. don't worry about nj, he is like that.

Anyway, if U know a little about electronics than u can do some troubleshoot but seem like the problem is deeper. If it's still under warranty than let the dealer take care of it.

eaglexkr · 10-30-2009, 07:17 AM

Thanks for your civil reply,I have 80K on the car so it is a little past warrenty.If its shorting out,it has to be going to ground somewhere,I will trace as much wiring back and see if I can find the short.It is not the CAN network,that controls the logic.Now what I have to do is work through the harness.If anyone has been down this road before and can give me a short cut please do.

lollonais · 10-30-2009, 08:58 AM

Have you installed anything lately? Do you have any aftermarket stuff? new radio, amp, leds?

eaglexkr · 10-30-2009, 10:30 PM

Nope,nothing. The only thing I can think of is a mouse had a snack under my hood,but I doubt that.

eaglexkr · 11-01-2009, 04:19 PM

Did the troubling shooting and found the problem!!

Luna2 · 11-02-2009, 02:52 AM

Quote:

Originally Posted by eaglexkr

Did the troubling shooting and found the problem!!

Please share the discovery.

eaglexkr · 11-05-2009, 09:05 PM

Followed below until I found the wires that when touching each other where the insulation had melted,about 6-8inches from Socket.
FINDING A SHORT CIRCUIT

(a) Remove the blown fuse and disconnect all loads of the fuse.
(b) Connect a test light in place of the fuse.
(c) Establish conditions in which the test light comes on.
Example:
[A] – Ignition SW on
[B] – Ignition SW and SW 1 on
[C] – Ignition SW, SW 1 and Relay on (Connect the
Relay) and SW 2 off (or Disconnect SW 2)
(d) Disconnect and reconnect the connectors while watching the
test light.
The short lies between the connector where the test light
stays lit and the connector where the light goes out.
(e) Find the exact location of the short by lightly shaking the
problem wire along the body.

workerant · 11-05-2009, 09:55 PM

So i am guessing somehow the insulator is expose the copper a little to allow the small short which melt the rest of the insulator... does that seem like it?

pics? show where the short is so others can double check with theres.

eaglexkr · 11-07-2009, 07:01 PM

Maybe next time, did the repair and taped everything up.