www.abrites.com
8
2021
Abrites Diagnostics for Chrysler, Dodge, Jeep
2.1 Special Functions
The appropriate special function is opened by selecting it from the list box and double-clicking on it, or
by selecting it and then pressing the “Open” button.
2.1.1 “Immobilizer (SKIM)”
SKIM means Sentry Key Immobilizer System. It prevents unauthorized operation of the vehicle by dis-
abling the engine. The system will shut the engine down after 2 seconds of running if an invalid key is used
to start the vehicle. This system utilizes ignition keys which have an electronic chip (transponder) embed-
ded into them. Only keys that have been programmed to the vehicle can be used to start and operate the
vehicle for more than the two second validation time period.
During normal operation, the Sentry Key Indicator light, located on the instrument panel upper cover, will
come on for 3 seconds immediately after the ignition is turned on for a bulb check. Afterwards, if the bulb
remains on solid, this indicates a problem with the electronics. If the bulb begins to flash after the bulb
check, this indicates that an invalid key has been used to start the vehicle or there is a communication
failure between the transponder and the Sentry Key Immobilizer module. Both of these lamp conditions
will result in the engine being shut down after 2 seconds of running. Keep in mind that a key which has
not been programmed is also considered an invalid key even if it is cut to fit the ignition for that vehicle.
If the Sentry Key Immobilizer System indicator light comes on during normal vehicle operation (it has
been running for longer than 10 seconds) a fault has been detected in the electronics and the vehicle
should be serviced as soon as possible.
The Theft Alarm Light, located on top of the instrument panel, will illuminate for about 3 seconds when
the ignition switch is first turned to the On position. If the vehicle electronics do not receive a valid signal
from the ignition key, the theft alarm light will flash continuously to signal that the vehicle has been im-
mobilized. If the Theft Alarm Light remains On during vehicle operation, it indicates a fault in the system
electronics.
A four digit PIN is needed to service the Sentry Key Immobilizer System. This number can be found on
your customer invoice that you were given upon receipt of your vehicle. However, if you lost your PIN
Code the Abrites Diagnostics for Chrysler/Dodge/Jeep can read it from the SKIM module.
