SKIM and a good ground. There should be continuity.
If OK, go to Step 6. If not OK, repair the open
ground circuit to ground (G208) as required.
(6) Reconnect the battery negative cable. Check for
battery voltage at the fused B(+) circuit cavity of the
instrument panel wire harness connector for the
SKIM. If OK, go to Step 7. If not OK, repair the open
fused B(+) circuit between the SKIM and the JB as
required.
(7) Turn the ignition switch to the On position.
Check for battery voltage at the fused ignition switch
output (run-start) circuit cavity of the instrument
panel wire harness connector for the SKIM. If OK,
refer to the appropriate diagnostic information and
use a DRBIII
t scan tool to complete the diagnosis of
the SKIS. If not OK, repair the open fused ignition
switch output (run-start) circuit between the SKIM
and the JB fuse as required.
SECURITY INDICATOR FLASHES OR LIGHTS SOLID
FOLLOWING BULB TEST
A security indicator that flashes following a suc-
cessful bulb test indicates that an invalid key has
been detected, or that a key-related fault has been
set. A security indicator that lights solid following a
successful bulb test indicates that the SKIM has
detected a system malfunction or that the SKIS is
inoperative. In either case, fault information will be
stored in the SKIM memory. For retrieval of this
fault information and further diagnosis of the SKIS,
the PCI data bus, the SKIM message outputs to the
Central Timer Module (CTM) that control the secu-
rity indicator, or the message inputs and outputs
between the SKIM and the Powertrain Control Mod-
ule (PCM) that control engine operation, a DRBIII
t
scan tool and the appropriate diagnostic information
are required. Following are preliminary troubleshoot-
ing guidelines to be followed during diagnosis using a
DRBIII
t scan tool:
(1) Using the DRBIII
t scan tool, read and record
the faults as they exist in the SKIM when you first
begin your diagnosis of the vehicle. It is important to
document these faults because the SKIM does not
differentiate between historical faults (those that
have occurred in the past) and active faults (those
that are currently present). If this problem turns out
to be an intermittent condition, this information may
become invaluable to your diagnosis.
(2) Using the DRBIII
t scan tool, erase all of the
faults from the SKIM.
(3) Cycle the ignition switch to the Off position,
then back to the On position.
(4) Using the DRBIII
t scan tool, read any faults
that are now present in the SKIM. These are the
active faults.
(5) Using this active fault information, refer to the
proper procedure in the appropriate diagnostic infor-
mation for the additional specific diagnostic steps.
STANDARD PROCEDURE - SKIS
INITIALIZATION
The Sentry Key Immobilizer System (SKIS) must
be initialized following a Sentry Key Immobilizer
Module
(SKIM)
replacement.
SKIS
initialization
requires the use of a DRBIII
t scan tool. Initialization
will also require that you have access to the unique
four-digit PIN code that was assigned to the original
SKIM. The PIN code must be used to enter the
Secured Access Mode in the SKIM. This PIN number
may be obtained from the vehicle owner, from the
original vehicle invoice, or from the DaimlerChrysler
Customer Center. (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES - STANDARD PRO-
CEDURE - PCM/SKIM PROGRAMMING).
NOTE: If a Powertrain Control Module (PCM) is
replaced on a vehicle equipped with the Sentry Key
Immobilizer System (SKIS), the unique Secret Key
data must be transferred from the Sentry Key
Immobilizer Module (SKIM) to the new PCM using
the PCM replacement procedure. This procedure
also requires the use of a DRBIII
T
scan tool and the
unique four-digit PIN code to enter the Secured
Access Mode in the SKIM. Refer to the appropriate
diagnostic information for the proper PCM replace-
ment procedures.
STANDARD PROCEDURE - SENTRY KEY
TRANSPONDER PROGRAMMING
All Sentry Keys included with the vehicle are pre-
programmed to work with the Sentry Key Immobi-
lizer System (SKIS) when it is shipped from the
factory. The Sentry Key Immobilizer Module (SKIM)
can be programmed to recognize up to a total of eight
Sentry Keys. When programming a blank Sentry Key
transponder, the key must first be cut to match the
ignition switch lock cylinder in the vehicle for which
it will be used. Once the additional or new key has
been cut, the SKIM must be programmed to recog-
nize it as a valid key. There are two possible methods
to program the SKIM to recognize a new or addi-
tional valid key, the Secured Access Method and the
Customer Learn Method. Following are the details of
these two programming methods.
SECURED ACCESS METHOD
The Secured Access method applies to all vehicles.
This method requires the use of a DRBIII
t scan tool.
This method will also require that you have access to
the unique four-digit PIN code that was assigned to
8Q - 6
VEHICLE THEFT SECURITY
AN
VEHICLE THEFT SECURITY (Continued)