Dodge Dakota 2001, Service Manual

Page: 493 / 2307

electronic functions and features not available with
conventional hard wired power lock systems.
•
Driver Door Module - A power lock switch is
integral to the driver door module unit located near
the forward end of the arm rest on the driver side
front door trim panel and allows the power lock sys-
tem to be operated by the driver.
•
Power Lock Motors - A reversible electric
motor integral to the door latch of each door locks or
unlocks the latches when provided with the appropri-
ate electrical inputs.
•
Power Lock Switch - An individual power lock
switch is secured to a switch bezel near the forward
end of the arm rest on the passenger side front door
trim panel and allows the power lock system to be
operated by the front seat passenger.
On those models equipped with the optional Vehi-
cle Theft Security System (VTSS), the power lock
system also includes the following components, which
are described in further detail elsewhere in this ser-
vice manual:
•
Door Cylinder Lock Switches - A resistor-
multiplexed switch located on the back of each front
door lock cylinder allows the power door lock system
to be operated using a key inserted in either the
driver or passenger front door lock cylinder.
Some of the additional features of the power lock
system in this model include:
•
Automatic Door Lock - The CTM provides an
optional automatic door lock feature (also known as
rolling door locks). This is a programmable feature.
•
Central Locking - On models also equipped
with the optional VTSS (includes door cylinder lock
switches), the CTM provides an optional central lock-
ing/unlocking feature.
•
Door Lock Inhibit - The CTM provides a door
lock inhibit feature.
•
Enhanced Accident Response - The CTM pro-
vides an optional enhanced accident response fea-
ture. This is a programmable feature.
Hard wired circuitry connects the power lock sys-
tem components to the electrical system of the vehi-
cle. These hard wired circuits are integral to several
wire harnesses, which are routed throughout the
vehicle and retained by many different methods.
These circuits may be connected to each other, to the
vehicle electrical system and to the power lock sys-
tem components through the use of a combination of
soldered splices, splice block connectors, and many
different types of wire harness terminal connectors
and insulators. Refer to the appropriate wiring infor-
mation. The wiring information includes wiring dia-
grams, proper wire and connector repair procedures,
further details on wire harness routing and reten-
tion, as well as pin-out and location views for the
various wire harness connectors, splices and grounds.
Many of the electronic features in the vehicle con-
trolled or supported by the CTM are programmable
using the DRBIII
t
scan tool. In addition, the CTM
software is Flash compatible, which means it can be
reprogrammed using Flash reprogramming proce-
dures. However, if any of the CTM hardware compo-
nents are damaged or faulty, the entire CTM unit
must be replaced. The power lock system components
and the hard wired inputs or outputs of the CTM can
be diagnosed using conventional diagnostic tools and
methods; however, for diagnosis of the CTM or the
PCI data bus, the use of a DRBIII
t
scan tool is
required. Refer to the appropriate diagnostic infor-
mation.
DESCRIPTION - REMOTE KEYLESS ENTRY
SYSTEM
A Remote Keyless Entry (RKE) system is an avail-
able option on this model when it is equipped with
the optional power lock system. The RKE system is a
Radio Frequency (RF) system that allows the remote
operation of the power lock system and, if the vehicle
is so equipped, the Vehicle Theft Security System
(VTSS).
(Refer to 8 - ELECTRICAL/VEHICLE
THEFT SECURITY - DESCRIPTION). The RKE sys-
tem includes the following major components, which
are described in further detail elsewhere in this ser-
vice manual:
•
Central Timer Module - The Central Timer
Module (CTM) is located on the left cowl side inner
panel under the driver side outboard end of the
instrument panel. The CTM contains a microproces-
sor, an RF receiver, and the software that allow it to
provide the many electronic functions and features of
the RKE system.
•
Keyless Entry Transmitter - The keyless
entry transmitter is a small, battery-powered, RF
transmitter that is contained within a molded plastic
case that is designed to also serve as a convenient
key fob.
Some additional features of the RKE system
include:
•
Driver Door Unlock Only - This is a program-
mable feature on quad cab models only, which allows
the option of having a single press of the RKE trans-
mitter Unlock button unlock only the driver door, or
all doors. If the driver door only option is selected, a
second press of the Unlock button will unlock the
remaining doors.
•
Horn Chirp - This feature provides a short,
sharp chirp of the vehicle horn to give an audible
confirmation that a valid Lock signal has been
received from the RKE transmitter. This feature can
be enabled or disabled and, if enabled, one of two
optional horn chirp durations (twenty or forty milli-
seconds) can also be selected.
8N - 2 POWER LOCKS
AN
POWER LOCKS (Continued)