Yes - that part number is the alarm main module.
Given that part number, it appears you have the Toyota factory TVIP RS3000 system. This should be either TVIP V2 or TVIP V3.
Start by reviewing the RS3000 documentation at Parks Offroad:
Thanks for the link. I do believe I have lights on the inside of the doors, you would think I would remember since I drove the truck for 14 years . I was using the dome and map lights yesterday, I had the truck running to charge the battery, but I didn't pay any attention to the door lights. I went and bought a battery charger today, so I won't have to jump it every time, and have the battery out and charging right now. I plan on attacking it again tomorrow. I'll look at the door lights then.
I found some very similar manuals, they were for a 1998 Land cruiser, last night. The pictures in both of the ECU, do not look the same. All those big, square connectors are not on it, just one big white connector with about 15 wires on it-it looks similar to an ATX motherboard power supply connector on a PC.What I did determine from an EWDmanual I found is that the Tacoma has the RS3200, with the Keyless Entry upgrade. I also can't find the button to push for programming remotes- it's probably recessed and has to be pushed with a paper clip or something. The biggest problem with messing with all this is the location-it's all up under the dash on the driver's side, and next to impossible for me to see, much less push buttons on it. What I would really like is to just get rid of the alarm system completely. I would be happy to just have an old fashioned "unlock the doors with a key". If I can disconnect the ECU, and all the lights still work, and the engine still start, etc, I would be thrilled. The truck is not my main vehicle anymore, it needs some work, and I want to customize it, and I don't want t have to deal with the alarm every time I hook the battery back up. Sorry for the long post.
So I know this post is old, but if you took out this system what all did you remove? I unplugged mine and the truck was still locked out from starting. It is a 2001 Tacoma, with a Toyota alarm system but no remotes were given when I bought the truck. I will go try to take a picture of the model number on the alarm module. I just got the part number of my alarm it is a 00014-S0273, I am needing this truck to go to work and I can't get it to reset... any help out there?Well, I got the ECU out-every thing works pretty much. I can start the engine, the horn honks when I push the middle of the steering wheel, all the exterior lights work as they should, and the interior lights work. I do have the courtesy lights on the doors. I no longer have keyless entry. One strange thing, that I can live with, is when I open the driver door, with the key out, or in the locked position, I get a constant noise, the same noise it makes if I leave the head lights on. As soon as I shut the door, or put the key in and turn to on or start, the noise stops. Does not do this on the passenger door. Also, the power locks work with the switch on the doors only on the passenger door. Remotes do nothing.The drivers door is pretty much an old fashioned manual lock, unlock now. Don't know if it matters, but my remotes are 3 button, and have a physical key built into them that can be used in the ignition switch. All the info I have found online show separate 2 button remotes.I also have two regular keys that came with the truck, no remote. There is no button on it to program remotes with, anywhere on the ECU. I took some pictures of my ECU out of the truck to upload here in case anybody else could use the info, but I don't seem to be allowed to upload pictures, or post links.