The lights are fused separately for high and low beam.
The low beam fuse is 10 amp marked LO HDLP in the underhood fuse panel. This fuse is powered by the low beam relay. The relay is activated by the body control computer (BCM). If the fuse isn't being powered it may be a bad relay, wiring to the relay or the BCM. If it is the BCM there may be a code stored in memory. Also check the Headlamp relay which is located in the wiring harness junction block.
Attached is a further description of your headlight circuit as well as a wiring diagram. Good Luck
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