A faulty gas door lock actuator won't prevent the door locks from working. I'd start by grounding the lock and unlock wires at the immobilizer to see if the door locks work properly. If they do, the problem is in the door latch mechanism or the wiring between it and the immobilizer.
Edit: I forgot about all of your issues and related codes. I'd still start with the grounding test and see/report what that does. Did you ever test or replace the door latch mechanisms?
Last edited by particlewave; 03-27-2017 at 08:58 AM.
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