Sentry Key Immobilizer System

SENTRY KEY IMMOBILIZER SYSTEM





The Sentry Key Immobilizer System (SKIS) is available as a factory-installed option on this vehicle. Vehicles equipped with this option can be readily identified by the illumination of the security indicator in the instrument cluster for about three seconds after the ignition switch is turned to the ON position as a SKIS bulb test.

The SKIS includes the following major components, which are described in further detail:

- Powertrain Control Module (1) - The Powertrain Control Module (PCM) is located in the engine compartment and provides the SKIS engine control logic.
- Security Indicator - A security indicator is integral to the Electromechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN).
- Sentry Key Remote Entry Module (2) - The Sentry Key REmote Entry Module (SKREEM) (also known as the Wireless Control Module/WCM) is located on the right side of the steering column near the ignition lock cylinder housing and an integral molded plastic antenna ring circles the ignition lock cylinder like a halo. The SKREEM and its antenna are concealed beneath the steering column shrouds. Two SKREEM modules are available: one for vehicles equipped with Remote Keyless Entry (RKE) only, and one for vehicles equipped with RKE and SKIS.
- Sentry Key Transponder (3) - The Sentry Key transponder is contained within the Remote Keyless Entry (RKE) transmitter on the ignition key.

Except for the Sentry Key transponders, which rely upon Radio Frequency (RF) communication, hard wired circuitry connects the SKIS components to the electrical system of the vehicle. These hard wired circuits are integral to several wire harnesses, which are routed throughout the vehicle and retained by many different methods. These circuits may be connected to each other, to the vehicle electrical system and to the SKIS components through the use of a combination of soldered splices, splice block connectors, and many different types of wire harness terminal connectors and insulators. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire harness connectors, splices and grounds.