Well...
I can read the crap out out of my manuals, or make copies, send them to you, and you can read the crap out of the manuals
There may, or may not be a specific diagnosis procedure for this problem, or the manual might say something like, "substitute a known good keyless entry module".
I'm not trying to dis you here, but the problem is definately electrical, diagnosis is complex, and it may just be a loose wire from the module.
It's going to take some thourough understanding of the entire system to trace it down.
I'll gladly send you copies of the Factory CD's if you want them, their specific for my car, but your's seems to be the same one.
Your choice !