I have a 2003 GC ES. Recently the low beams have stopped working. Daytime running lights, park lights, dash lights and brights all work fine. When turning headlight switch to different positions I can hear a relay except in the low beam on position. I can't find a fuse or relay for the low beams. Am I blind or is there a hidden fusible link or somewhere other than the underhood fuse box to look.
Any help or suggestions would be greatly appreciated.

 

Using a test lite,ck the L43 wt/db wire for power with the headlamp switch on. If you have power, then ck z343 for ground. If you have no power at L43 wire, then you have an open circuit. Problem could be wiring or a flash on the IPM/FCM.

 

You sure It's not just 2 burnt out low beam bulbs?
You wouldn't be the first to have it happen to...

 

True, You could have two bulbs out. Thats why you want to ck for power and ground 1st. Before you go out and buy bulbs if you don't need them.

 

Thanks for the suggestions. I probably have a spare bulb somewhere. I didn't try this yet because the daytime running lights work and I thought they were the low beams at a lower voltage. I thought for sure there must be a fuse or relay for them. I am going to go try the bulb and take my meter to check for voltage at the bulb connections. In my Haynes manual it says the left low beam + is wht/ dk blu & - is blk/ lt grn, and right low beam + wht/ tan & - is blk/ tan. Is this what you were suggesting I do with those letters and numbers you gave me, as I don't Know exactly what they meant. Finally you mentioned something about a flash. Would this be having the dealer reprogram it.

Again thanks for the advice.

 

It was two burned bulbs.