Actually I didn't use any tool to figure it out. I figured it out by accident when my alarm went off for no reason and woudn't shut up while using the remote. I just started jiggling things, and noticed a spark between the alarm horn and the side wall, and see it was loose. When I pushed the alarm tight against the side wall the alarm went off. I then recreated the problem on my own, and realized that was the problem. (I too had check fuses, I even pulled the sensitivity module apart and the alarm still did not stop). So once I found the problem, I just replaced the screws.

I did not check to see if the horn was working or not. I mean I used it the other day and it works fine, but whether or not it didn't before when I did have the problem I have no idea. I have had to replace the battery in my remote a couple of times before that happened, and now have not had any more problems what-so-ever.

 

I brought it to the shop and they reprogrammed it. Works again! Thanks all.

 

jonasling,
i'm glad it worked out for you......