I have a 2001 Mitsubishi Lancer CE, unfortunately both low beam headlights don't work. However, high beams and parking lights both work. I've checked the fuse, relay and bulb, all appear to be working. You can also hear the relay clicking when the low beam is turned on, so I don't believe it's the stalk switch.
For reference on the 3 terminals to the headlights I get +12V on all terminals while low beam is on, and one terminal drops to 0V while high beam is on.
I've run out of ideas on what to test, any help is appreciated.
EDIT: I believe it is indeed the switch, as the high beam toggle no longer works, it will only stay on while it is held on. Also after turning the high beam on and off repeatedly the low beam now works again :D, and of course turning the high beam on again may stop the low beam from working again :(. So looks like I'll be heading to the wreckers for a new switch.