Security Immobilizer 2006 Toyota Tundra V8 4.7L

Does anyone have a wiring manual or can point out where the computer/immobilizer is for this security system? The shock sensor part has t connectors into original wiring so I can’t trace the wires back further than the shock sensor.

My neighbor and I have been working on this truck for months and we have to get it going. Taking it anywhere isn’t really an option due to funds.

There were a few other things we replaced but every time I get this truck running it will turn on once then go into theft mode and won’t start again. I even replaced the shock sensor and the wiring because one of the connectors was thinning out the red wire it tied into and it turned on once but won’t come on again. I’m at a loss and wiring isn’t my forte at all but I have to figure out how to disable this alarm so we can get this truck back on the road. Does anyone have experience with this specific security model? I have searched every alarm and security forum/googled everything I can think of but I’m not finding diagrams for this specific model.

 

https://www.tundras.com/threads/ultimate-tundra-wiring-diagrams-collection.81448/

 

What cab type the truck, regular, access, or double cab? Only one of the three came with OEM/factory immobilizer, and not all of the double cabs had it.

 

@shifty` it’s a double cab