Get vehicle repair guides and diagrams through AutoZone to find out everything you need to know about your car or truck.. 2000 Corolla Headlight / DRL Issue corolla 2000 drl headlights not working Jump to Latest 13K views 7 replies 5 participants last post by AAATOYOTA Jan 23, 2023 M
Tacoma headlights are ground switching meaning the common for the bulb is powered by 12V as soon ad either high or low beam are turned on and other two contacts will get connected to the ground depending on the headlight switch position.. Headlight Control Relay Circuit CIRCUIT DESCRIPTION When the theft deterrent system is activated, it causes the Tr in the ECU to switch ON and OFF at approximately 0.4 sec. intervals. This switches the headlight control relay ON and OFF, thus flashing the headlights (See the wiring diagram).