Dodge 2000 DURANGO Service Manual page 458

8P - 2 POWER LOCK SYSTEMS
GENERAL INFORMATION (Continued)
Unlock button to unlock just the driver door, and a
second press within five seconds to unlock all doors
and the liftgate. If disabled, one press of the RKE
transmitter Unlock button will unlock all doors and
the liftgate. The rolling door lock feature will lock all
of the doors and the liftgate above a vehicle speed of
about 24 kilometers-per-hour (15 miles-per-hour).
These features can be enabled or disabled using a
DRB scan tool as described in the proper Diagnostic
Procedures manual. These features can also be
enabled/disabled using the customer programmable
feature. See the owner's manual in the vehicle glove
box for more information on the customer program-
mable feature.
The panic feature allows the vehicle operator to
cause the horn to pulse, the headlights to flash and
the courtesy lamps to light for about three minutes
by depressing the Panic button on the RKE transmit-
ter. A second depression of the Panic button, or a
vehicle speed of about 24 kilometers-per-hour (15
miles-per-hour) will turn off the panic event prior to
the expiration of the automatic three minute timer.
The RKE system can retain the vehicle access
codes of up to four RKE transmitters. The transmit-
ter codes are retained in RKE system memory, even
if the battery is disconnected. If a transmitter is
faulty or is lost, new transmitter vehicle access codes
can be programmed into the system using a DRB
scan tool as described in the proper Diagnostic Pro-
cedures manual. If one functional transmitter is
available, up to three additional transmitters can be
programmed using the customer programmable fea-
ture. See the owner's manual in the vehicle glove box
for more information on the customer programmable
feature.
The RKE system consists of a driver unlock relay,
a headlamp (or security) relay, a horn relay, a key fob
remote radio transmitter and a radio receiver with
program logic, which is integral to the high-line ver-
sion of the Central Timer Module (CTM).
Following are general descriptions of the major
components in the RKE system. Refer to the owner's
manual in the vehicle glove box for more information
on the features, use and operation of the RKE sys-
tem.
DESCRIPTION AND OPERATION
CENTRAL TIMER MODULE
Two versions of the Central Timer Module (CTM)
are available on this vehicle, a base version and a
high-line version. The base version of the CTM is
used on base models of the vehicle. The base version
of the CTM combines the functions of a chime/buzzer
module, an intermittent wipe module, and an illumi-
nated entry module into a single unit. The base CTM
also uses inputs from the door ajar switches, the
headlamp switch and the key-in ignition switch to
control the output to the dome lamp circuits, which
allows the base CTM to provide load shedding to help
protect the battery from becoming discharged.
The high-line version of the CTM is used on high-
line vehicles. The high-line CTM provides all of the
functions of the base version CTM, but also is used to
control and integrate many of the additional elec-
tronic functions and features included on the high-
line models. The high-line version of the CTM
contains a central processing unit and interfaces with
other modules in the vehicle on the Chrysler Colli-
sion Detection (CCD) data bus network.
The CCD data bus network allows the sharing of
sensor information. This helps to reduce wire har-
ness complexity, reduce internal controller hardware,
and reduce component sensor current loads. At the
same time, this system provides increased reliability,
enhanced diagnostics, and allows the addition of
many new feature capabilities.
The high-line CTM controls features and functions
of the power lock, illuminated entry, and Remote
Keyless Entry (RKE) systems. The high-line CTM
receives hard wired inputs from the power lock
switches, CCD message inputs from the Powertrain
Control Module (PCM) and Airbag Control Module
(ACM), and coded radio frequency inputs from the
RKE transmitters. In response to those and many
other inputs, the internal programming of the CTM
sends the proper outputs to control the power lock
motors, the headlamp and horn relays, and the cour-
tesy lamps.
Some of the features and functions of the power
lock, illuminated entry and RKE systems made pos-
sible because of the communication of the CTM on
the CCD data bus network include:
• A door-lock inhibit feature which prevents the
power lock system from being energized with a power
door lock switch when the driver door is open if the
key is in the ignition and/or the headlamps are on.
However, the locks can still be operated manually,
with a key, or energized with the RKE transmitter.
• A programmable driver door unlock feature. The
driver door unlock feature allows one press of the
RKE transmitter Unlock button to unlock just the
driver door, and a second press within five seconds to
unlock all doors and the liftgate. If disabled, one
press of the RKE transmitter Unlock button will
unlock all doors and the liftgate.
• A panic mode feature which can provide addi-
tional personal security and protection. When the
Panic button on the RKE transmitter is depressed
the vehicle horn will pulse, the headlights will flash,
and the interior lights will illuminate on the vehicle
for about three minutes, or until the Panic button is
DN