Since the pcm appears damaged, I'd suggest you replace this first. I'm uncertain whether a used I-key is reusable, but you could try. What matters most however is the mechanical key which is used for the programming for ignition to start.
niether as yet im looking for one that particular ecu is hard to find there are a few 0281014859 but nine is 0282014858 are they compatable. im beginning to wonder if maxisys is good enough for the job a lot of the time it says function not supported.
That number is for one or two years preceding yours, so I really can't tell regarding compatibility. The one compatible with yours is that for years after yours. Maybe it's because of non-compatibility that Maxisys reports non-supported. You might have to try other tools if in doubt.