Chrysler Stratus LHD 1997, Интерактивное электронное руководство по эксплуатации

Страница: 1068 / 1534

ENABLING
The vehicle immobilizer system is disabled when it
is shipped from the factory. This is done by program-
ming within the Powertrain Control Module (PCM).
The logic in the PCM prevents the immobilizer sys-
tem from arming until the engine start counter
within the PCM sees twenty engine starts. The sys-
tem must be enabled when the vehicle is received
from the assembly plant.
The preferred method for enabling the immobilizer
system is to electronically advance the PCM engine
start counter using a DRB scan tool. Refer to the Vehi-
cle Theft Security System menu item on the DRB scan
tool for the procedures. Once this condition has been
met, the PCM will allow the immobilizer system to arm.
If a DRB scan tool is not available, the immobilizer
system can be enabled manually, as follows:
(1) If five minutes or more have elapsed since the
last previous engine start, or if the vehicle immobi-
lizer receiver has been actively armed, depress the
vehicle immobilizer transmitter Unlock button. Lis-
ten for a single chirp from the immobilizer receiver
to confirm the Unlock message has been received.
(2) Start the engine. Each engine start must be fol-
lowed by a minimum engine run duration of ten seconds.
(3) Allowing a cool-down period between starts, go
back to Step 1 a total of twenty times. After twenty
cycles, confirm that the vehicle immobilizer system is
enabled by actively arming the receiver and attempt-
ing to start the engine. The engine may start
momentarily, but should stall above about 500 rpm.
CAUTION: Repeated sequential starts of the engine
to run up the PCM engine start counter and enable
the immobilizer system must be avoided. Overheat-
ing and damage to the starting system components
and wiring can result.
The same immobilizer system enable logic will
apply anytime the PCM is replaced with a new unit.
IMMOBILIZER TRANSMITTER
The vehicle immobilizer system includes two trans-
mitters that are supplied with the vehicle when it is
shipped from the factory. Each of the two transmit-
ters is equipped with two buttons labeled with Inter-
national Standards Organization (ISO) symbols for
Lock, and Unlock. Two spare batteries (enough for
one transmitter) are also shipped with the transmit-
ters. The transmitters are equipped with a key ring
and are designed to serve as a key fob. The operating
range of the radio frequency transmitter signal is up
to 7 meters (23 feet) from the immobilizer receiver.
Each transmitter has a different vehicle access
code, which must be programmed into the memory of
the immobilizer receiver in the vehicle in order to
operate the immobilizer system. The two transmit-
ters shipped with the vehicle have their vehicle
access codes programmed into the receiver at the fac-
tory. A DRB scan tool must be used to program new
or additional transmitter vehicle access codes into
the memory of the immobilizer receiver. Refer to the
Vehicle Theft Security System menu item on the
DRB scan tool for the procedures.
Each transmitter operates on two Duracell DL2016
(or equivalent) batteries. Typical battery life is from
one to two years.
IMMOBILIZER RECEIVER
The immobilizer receiver is programmed to respond to
the Lock and Unlock radio signals issued by the immo-
bilizer transmitters. The receiver will only respond to
the radio signals of transmitters (up to four) whose
vehicle access codes have been stored in the receiver’s
electronic memory. The receiver is programmed at the
assembly plant with the vehicle access codes of the two
transmitters that are shipped with the vehicle.
The immobilizer receiver also has a central pro-
cessing unit, which contains the immobilizer system
logic. The programming in the immobilizer receiver
allows the system to learn and retain transmitter
vehicle access codes, as well as to communicate with
the Powertrain Control Module (PCM) and/or the
DRB scan tool on the Chrysler Collision Detection
(CCD) data bus network.
The CCD data bus network allows the sharing of
sensor information. This helps to reduce wiring harness
complexity, reduce internal controller hardware, and
reduce component sensor current loads. At the same
time, the CCD data bus network provides increased
reliability and enhanced diagnostic capabilities.
Each immobilizer transmitter has a different vehicle
access code, which must be programmed into the mem-
ory of the immobilizer receiver in the vehicle in order to
operate the immobilizer system. A DRB scan tool must
be used to program new or additional transmitter vehi-
cle access codes into the memory of the immobilizer
receiver. Refer to the Vehicle Theft Security System
menu item on the DRB scan tool for the procedures.
The immobilizer receiver recognizes the Lock and
Unlock signals received from the programmed immo-
bilizer transmitters. The receiver then uses the pro-
grammed immobilizer system logic to decide whether
other monitored conditions are proper for an engine
Lock or Unlock message to be sent. If the pro-
grammed conditions are met, the receiver responds
by sending the proper message to the PCM on the
CCD data bus. The PCM responds to the message by
disabling or enabling the fuel injector driver circuitry
within the PCM, which will inhibit engine operation.
The immobilizer receiver is mounted to the dash
panel with a hook and loop fastener patch. It is
located behind the instrument cluster and above the
JA
FUEL SYSTEM 14 - 3
GENERAL INFORMATION (Continued)