Sentry Key Immobilizer Module: Description
WARNING: This page is about a different car, the 2003 Dodge Intrepid, 2003 Chrysler Intrepid, 2003 Chrysler Concorde, and 2003 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
The sentry key immobilizer Module (SKIM) (Fig 1 ) contains a radio Frequency (RF) transceiver and a central processing unit, which includes the sentry key immobilizer system (SKIS) program logic. The SKIS programming enables the SKIM to program and retain in memory the codes of at least two, but no more than eight electronically coded sentry key transponders. The SKIS programming also enables the SKIM to communicate over the programmable communication interface (PCI) bus network with the powertrain control module (PCM), and/or the DRBIII(R) scan tool.