System Self-Test

Sentry Key Immobilizer Module (SKIM) performs a self-test each time ignition switch is turned to ON position and will store Diagnostic Trouble Codes (DTCs) if a system malfunction is detected. Vehicle Theft Security System (VTSS), Sentry Key Immobilizer System (SKIS) and Programmable Communication Interface (PCI) bus network should be diagnosed and any stored DTCs retrieved using a scan tool. For VTSS, SKIS and PCI bus network diagnosis, see BODY CONTROL MODULES - NEON article.