Sentry Key Immobilizer System (SKIS) Overview
The Sentry Key Immobilizer System (
SKIS) is an immobilizer system designed to prevent unauthorized vehicle operation. The system consists of
Sentry Key Immobilizer Module (
SKIM) sends a PCI Bus message to the engine controller indicating ignition key status. Upon receiving this message the PCM will terminate engine operation or allow the engine to continue to operate.