Jeep Cherokee 2000 Service Manual - page 533
SERVICE PROCEDURES
SENTRY KEY IMMOBILIZER SYSTEM
TRANSPONDER PROGRAMMING
Two
programmed
Sentry
Key
transponders
are
included with the Sentry Key Immobilizer System
(SKIS) when it is shipped from the factory. The Sentry
Key Immobilizer Module (SKIM) can be programmed to
recognize up to six additional transponders, for a total
of eight Sentry Keys. The following “Customer Learn”
programming procedure for the programming of addi-
tional transponders requires access to at least two of
the valid Sentry Keys. If two valid Sentry Keys are not
available, Sentry Key programming will require the use
of a DRB scan tool and the proper Diagnostic Proce-
dures manual.
CUSTOMER LEARN
(1) Obtain the additional Sentry Key transponder
blank(s) that are to be programmed for the vehicle. Cut
the additional Sentry Key transponder blanks to match
the ignition lock cylinder mechanical key codes.
(2) Insert one of the two valid Sentry Key tran-
sponders into the ignition switch and turn the igni-
tion switch to the On position.
(3) After the ignition switch has been in the On posi-
tion for about three seconds, but no more than fifteen
seconds later, cycle the ignition switch back to the Off
position. Replace the first valid Sentry Key in the igni-
tion lock cylinder with the second valid Sentry Key and
turn the ignition switch back to the On position.
(4) About ten seconds after the completion of Step
3, the SKIS indicator lamp will start to flash and a
single audible chime tone will sound to indicate that
the system has entered the “Customer Learn” pro-
gramming mode.
(5) Within about fifty seconds of entering the “Cus-
tomer Learn” programming mode, turn the ignition
switch to the Off position, replace the valid Sentry
Key with a blank Sentry Key transponder, and turn
the ignition switch back to the On position.
(6) About ten seconds after the completion of Step
5, a single audible chime tone will sound and the
SKIS indicator lamp will stop flashing and stay on
solid for about three seconds to indicate that the
blank Sentry Key transponder has been successfully
programmed. The SKIS will immediately return to
normal system operation following exit from the
“Customer Learn” programming mode.
(7) Go back to Step 2 and repeat this process for
each additional Sentry Key transponder blank to be
programmed.
If any of the above steps is not completed in the
proper sequence, or within the allotted time, the SKIS
will automatically exit the “Customer Learn” program-
ming mode. The SKIS will also automatically exit the
“Customer Learn” programming mode if it sees a non-
blank Sentry Key transponder when it should see a
blank, if it has already programmed eight valid Sentry
Keys, or if the ignition switch is turned to the Off posi-
tion for more than about fifty seconds.
REMOVAL AND INSTALLATION
SENTRY KEY IMMOBILIZER MODULE
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS,
REFER TO GROUP 8M - PASSIVE RESTRAINT SYS-
TEMS BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, OR INSTRUMENT PANEL COM-
PONENT DIAGNOSIS OR SERVICE. FAILURE TO TAKE
THE PROPER PRECAUTIONS COULD RESULT IN
ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the knee blocker from the instrument
panel. See Knee Blocker in Group 8E - Instrument
Panel Systems for the procedures.
(3) Remove the three screws that secure the lower
steering column shroud to the upper shroud (Fig. 2).
Fig. 2 Steering Column Shrouds Remove/Install
1 – UPPER SHROUD
2 – SCREW (3)
3 – LOWER SHROUD
4 – STEERING WHEEL
8Q - 4
VEHICLE THEFT/SECURITY SYSTEMS
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