2000 Toyota Echo: Both headlights recently stopped working, but the high beams are fine. The bulbs and headlight fuses are in good shape. My only guess is the rotational switch on the steering column. Please help. I need my car for an evening delivery job.

Question edited to add maker.
Question moved to model category.

Here is one idea and some videos.

https://www.justanswer.com/acura/6uky3-acura-mdx-low-beam-headlights-will-not-on.html

These links show multiple fuse boxes and fuses which have something to do with daytime running light and lights.
Fuse box location and diagrams: Toyota Camry (1997-2001) - YouTube
Toyota Camry (1999 - 2000) - fuse box diagram - Auto Genius
1999 Toyota Camry Headlight Bulb Replacement, Relays and Fuses Explained - YouTube

Toyota Camry 2000 model headlight fault high beams not working xv20 Camry headlight switching off - YouTube

Toyota Camry Lights Not Working - YouTube

Solution: If both headlights aren't working, it's unlikely that a bulb is at fault. The likely cause is a fuse, headlight relay, headlight switch, dimmer switch or a wiring fault. ... Consult your owner's manual to locate the main fuse for the headlight circuit and replace that fuse with one having the same amp rating.
OR
Most total headlight failures are caused by a bad component like a fuse, relay, or module. Wiring problems can also cause both headlights to stop working. High beam headlights don't work or low beams don't work. The cause: A burned out bulb, or a problem with the high beam switch or relay.
https://www.lifewire.com/fix-non-working-headlights-4137021

this is the main light diagram Low beam this is the diagram for the daytime running lights. hope this helps... there have bee a few reported problems with the radio blowing and then the light go out if the radio is fine it could be a fault with the LED control relay if this blows it can blow the 10amp fuse for the lights. you need to get the right relay as there are two types touch and none touch. tast one this is were all the units are

headlight relay or fuse in engine compartment
http://caphector.com/atoyota/techinfo.toyota.com/ileaf/02toyrm/02toypdf/02rmsour/2002/02echorm/di/theft/headligh.pdf

there should be separate relays for your headlights inside the fuse panel under the hood drivers side fender

sounds like your bulbs are blown

if the fuses are good then you need to check for power and ground at the headlight plug that attaches to the headlight bulb if you have a good power and ground there and the connections are good then the bulbs are both no good.or if you can tell the bulbs are burnt out by looking at them then you don`t have to check powers and grounds.you also can directly feed power and ground to the bulb and check both the terminals for high beam and low beam as you cannot tell which is which by looking at the terminals

Power flows from the battery to the main fuse. Then it flows to the control coil and contact side of the headlight relay. When you turn on the headlights, the headlight switch provides ground to the control coil in the headlight relay and that operates the contacts. The contacts allow power to flow to the right and left hand headlight fuses. Power flows to the headlights. The headlight switch is what provides ground to the high and low beams on the headlights.

To diagnose, remove the headlight relay. Using a voltmeter, check for battery voltage on terminals 3 & 4 in the socket with the key in the RUN position. Then turn on the low beams. Test for good ground on terminal 1 in the socket. If you're not getting ground, then you've got a problem with either a bad headlight combo switch or a bad ground. If you get good ground on terminal 1, reinstall the relay, turn on the low beams and test for power in the headlight sockets. If you get battery voltage, that confirms you've got good fuses and wiring up to that point. Next, check for good low beam ground on the red/green wire in the bulb socket. If you're not getting good ground, it's either a bad combo switch or bad ground from the combo switch. Then turn on the high beams and check for good ground on the red/yellow wire in the bulb sockets.

It wouldn't hurt to clean the ID ground on the left side of the instrument panel, but based on everything you've said so far, this sounds like a bad combo switch

faulty light switch or light control module