Adjust the alarm for a 2010 tacoma alarm insensitive, doesn't lock doors when truck started

if it were me and i'm not a pro.. remove the driver side door panel and i would waste a little more wire and wire it straight into the power door lock on the drivers side that way you should avoid and computer issues as you know you are wired in behind the relays again I'm not a pro i'm just a weekend shade tree guy

your also suppose to hit door lock 2x before start and if alarm still goes off problem with fob or your aftermarket alarm programming

I suspect that the problem will be at the battery. either dirty or loose terminals ( should be shiny clean at posts and terminals) or a faulty battery. have a load test done to determine battery condition as batteries that work ok in warm weather fail in cold weather.

Check out all the wiring connections around the engine where you made adjustment.

Maybe you should call a Priest??? Lol...If memory serves that falls in the years of the big frame recall. Sounds like a wire or wires may be pinched or broken. Get a Chiltons book and start tracking the wires of the individual circuts that a giving you trouble

Try putting the key in the driver door lock and turning from lock to unlock. That should dissable the factory alarm system. You may have to do it a few times before it works.

If you mean the key fob, it may need to be re-calibrated to the truck.
Check your owners manual or call the dealer parts dept.
Most models use the driver's door lock to sync the fob and the vehicle.

Okay you may want to check to see if the sensor on door lock cylinder hasn't fallen off from the lock itself. Pull of the door panels and check the wires at the door lock cylinder. Hope this helps.

Program your factory keyless entry functions
For 2001+ Tacomas equipped with a factory alarm or keyless entry, here are some programming options that allow you to adjust the way your locks work.
The first programming option allows you to set the entry unlock to: (A) unlock the driver door with one push, and the remaining doors with a second push OR (B) unlock all of the doors with a single push.

• Open the driver's door. Remove the key from the ignition switch.
  
• (Complete these steps within 40 seconds)
  
  1. Insert the key into and remove it from the ignition switch 2 times.
     (IN - OUT - IN - OUT)
     
  2. Close, then open the driver's door 2 times.
     (SHUT - OPEN - SHUT - OPEN)
     
  3. Insert the key into and remove it from the ignition switch 1 time.
     (IN - OUT)
     
  4. Close, then open the driver's door 2 times.
     (SHUT - OPEN - SHUT - OPEN)
     
  5. Insert the key into the ignition switch and leave it in.
     
  6. Close the driver's door.
     
  7. Turn the key from LOCK to ON 4 times, ending at LOCK
     (LOCK - ON - LOCK - ON - LOCK - ON - LOCK - ON - LOCK)
     
  8. Wait for the locks to stop, then remove the key from the ignition switch.
     
• On the key fob, press and release both LOCK and UNLOCK buttons at the same time.
  
  1. [For all doors unlock] press and release the UNLOCK button.
     
  2. [For driver door unlock] press and release the LOCK button.
     
• Open the driver's door. The programming is complete. If programming did not occur, start over.