Headlights not working, but DRL work just fine

VULCAN2864

MEMBER
1999 TOYOTA COROLLA
1.8L
4 CYL
2WD
AUTOMATIC
278,000 MILES

When my car is on during the day, the DRL work just fine. However, when the I go to turn the headlights on using the dimmer switch the lights do not work at all, both low and high beams; though the high beam light will illuminate on my dashboard when trying to use the high-beams.

I have checked all of the fuses and replaced all of the relays in addition to replacing the dimmer switch with no luck. I have also replaced the relay/running light control module with one from a junkyard.

1 Reply

JOE F

EXPERT

Hi,

If all fuses are good, the relays are good, and you replaced the main DRL relay above the glove box, power is likely being lost before the switch.

I attached the headlamp wiring schematic below. Check the wires I highlighted at the switch for power. Also, if you haven't already, confirm there is power to the fuses you checked. Note I had to cut the schematic in half to make it readable. I did overlap the two pics so you can follow from one to the next.

Here are a couple of links you may find helpful when checking:

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Let me know what you find or if you have other questions.

Take care and God Bless,

Joe

Images (Click to enlarge)