||03-14-2019 04:37 AM
It will depend on how it works. I read through the service manual on the subject and nothing popped out to me that the various modules share an identifier code that all the cattle in the field have to agree upon. That is how most vehicle manufacturers are doing it now.
If the donor vehicles has no such immobilizer module, then you don't really have to worry about it alone receiving an "okay to start" signal. Of course, if the other modules tell and convince the ECU that, hey, by the way, this car is supposed to see some bits of data before starting..." then you have a problem. Like I said, nothing in the service manual popped out to me regarding that being the case.
Or, simply swapping all the modules in the car at the same time will work. Immobilizers are far more hassle than they are worth. If you are worried about the car getting stolen, install a fuel pump cutoff switch with its switch mounted in an inconspicuous place. But when insurance companies convince the law makers that immobilizers have to be mandated, they win, and the consumer loses.