Hi and thanks for using 2CarPros.com. You shorted the system which caused the spark. Pin 4 is a ground and 16 is battery power. This should have blown a fuse, which is why the power door locks no longer work. The interior fuse block is under the dash in the center. I have attached a picture indicating its location. Next, there are two other pictures. They are of the fuse allocation as well as what each fuse does. Fuse 15 is the door lock fuse. That is the one I would focus on.
Here are general directions for fuse replacement:
https://www.2carpros.com/articles/how-to-check-a-car-fuse
Once you find the fuse, you can check if it is good by using a test light. Here is a video related to how to use a test light which will be needed. In the video, he is actually checking fuses.
https://youtu.be/Hlna_kUt7As
I hope this is helpful.
Take care,
Joe
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Friday, May 11th, 2018 AT 8:14 PM