Sentry Key Immobilizer System (Skis)

The SKIS indicator gives the vehicle operator an indication of the status of the SKIS. This indicator is controlled by the instrument cluster electronic circuit board based upon electronic messages received by the cluster from the SKIM over the PCI data bus. The SKIS indicator LED receives battery current on the instrument cluster electronic circuit board through the fused ignition switch output (run-start) circuit whenever the ignition switch is in the ON or START position. The indicator will always be off when the ignition switch is in any position except ON or START. The LED only illuminates when it is switched to ground by the instrument cluster transistor. The instrument cluster will turn on the SKIS indicator for the following reasons: bulb test, SKIM lamp-on message, and actuator test.