Grand Cherokee 2WD Limited V8-4.7L (2002)
The SKIM performs a self-test each time the ignition switch is turned to the ON position to decide whether the system is in good operating condition.
The SKIM then sends a message to the instrument cluster. If the SKIS indicator lamp fails to light during the bulb test, replace the bulb. For further
diagnosis of the SKIS indicator lamp or the instrument cluster circuitry that controls the lamp, refer to Instrument Cluster Diagnosis and Testing. If the
instrument cluster turns ON the SKIS indicator lamp after the bulb test, either solid or flashing, it indicates that a SKIS malfunction has occurred or
that the SKIS is inoperative. For proper diagnosis of the SKIS, the PCI data bus, or the message inputs to the instrument cluster that control the SKIS
indicator lamp, a DRB III scan tool and the appropriate diagnostic information are required.
VTSS INDICATOR
The Vehicle Theft Security System (VTSS) indicator consists of a red Light-Emitting Diode that is mounted and integral to the automatic headlamp
light sensor photo diode unit, which is located on the top of the instrument panel. The remainder of the housing including the mount and the electrical
connection are concealed beneath the instrument panel top cover.
The VTSS indicator cannot be adjusted or repaired the entire automatic headlamp light sensor/VTSS indicator must be replaced.
The Vehicle Theft Security System (VTSS) indicator gives a visible indication of the VTSS arming status. One side of Light Emitting Diode (LED) in
the VTSS indicator is connected to unswitched battery current through a fused B(+) circuit and a fuse in the Junction Block (JB). The other side of the
LED is hard wired to the Body Control Module (BCM), which controls the operation of the VTSS indicator by pulling this side of the LED circuit to
ground. When the VTSS arming is in progress, the BCM will flash the LED rapidly ON and OFF for about 15 seconds. When the VTSS has been
successfully armed, the BCM will flash the LED ON and OFF continually at a much slower rate until the VTSS has been disarmed. The VTSS
indicator can be diagnosed using conventional diagnostic tools and methods.
