Interior Lighting; Remote Keyless Entry Module; Vehicle Theft Security System - Dodge 2004 Neon SX2 Diagnostic Manual

Luxury cluster with the AutoStick function. The
PCM controls the vacuum fluorescent (VF) PRND
or AutoStick display. The cluster will illuminate the
appropriate PRND or gear position based on PCI
Bus data received from the PCM.
The Instrument Cluster Speedometer, Tachome-
ter, and Engine Coolant Temperature gauges are
positioned using PCI Bus messages received from
the PCM. The Fuel gauge is a hard wired input
from the Fuel Level Sensor in the Fuel Pump
Module.
The Cluster also contains warning indicators that
are illuminated by hard wired inputs or by mes-
sages received from other modules on the PCI Bus.
The Trip/Total Odometer is a Vacuum Fluores-
cent (VF) display that is controlled by PCI Bus
messages received from the PCM. The VF display
also displays the "Door", "Cruise", and "Trac" mes-
sages. If the Instrument Cluster experiences a loss
of PCI Bus communication with other modules on
the Bus, the Cluster will display "nobuS" in the VF
display.
The illumination lamps are hard wired in the
Instrument Cluster. When the Park or Headlamps
are turned on, the Cluster receives a hard wire
input from the Multi-Function Switch. The Cluster
sends a Panel Lamps Dimmer Signal to ground
through the Multi-Function Switch. The varying
voltage drop is sensed by the Instrument Panel
Drivers to create a corresponding amount of illumi-
nation dimming. This dimming level is then sent
out from the Cluster to other components.
The Cluster will communicate with the DRBIII
to display PCI Engine Info, PCI Bus info, and
certain inputs/outputs. The Cluster is also capable
of performing a diagnostic Self-Test that is actuated
by depressing and holding the Odometer trip reset
stalk while cycling the ignition from the off to the on
position. The Cluster will position all of the gauges
at specified calibration points and will illuminate
all the PCI Bus controlled indicators. The Cluster
will also illuminate each segment of the VF display.
If the Cluster does not detect voltage on the
Courtesy Lamp circuit, the message "FUSE" will
alternate with the odometer/trip odometer for 30
(thirty) seconds after the ignition is turned on and
for 15 (fifteen) seconds after the vehicle is first
moved.

3.6 INTERIOR LIGHTING

The Courtesy Lamps are controlled by the instru-
ment cluster. Some of the features that it controls
are the courtesy lamps, chime, and all instrument
illumination. It receives and sends messages to
other modules via the PCI bus circuit. The front
turn signals are wired through the cluster and then
GENERAL INFORMATION
go to the front lamps. For vehicles equipped with
Daytime Running Lamps, the DRL module is built
into the cluster.

3.7 REMOTE KEYLESS ENTRY MODULE

The Remote Keyless Entry module controls the
Power Door Locks and the Vehicle Theft Security
System (VTSS). It also wakes up the Instrument
Cluster to turn on the illuminated entry when it
senses a signal from the RKE transmitter. The
module communicates with other modules via the
PCI bus circuit.
The RKE module monitors the Occupant Re-
straint Controller messages for the purpose of mon-
itoring the deployment of the airbag. Upon receiv-
ing that message along with the verification that
the ignition is on and the vehicle speed is zero, it
will provide the "enhanced accident response fea-
ture". This feature will cause the module to unlock-
all doors immediately and the instrument cluster to
turn the courtesy lamps on when the vehicle
reaches 0 MPH.
The RKE module communicates with the Power-
train Control Module to receive vehicle speed infor-
mation to activate the rolling door lock feature,
receive the "okay to lock" message, and receive body
style information. Two transmitters are supplied
with the vehicle but a total of 4 can be programmed
to the module. The horn chirp on vehicle lock
command is customer programmable.
To limit the amount of battery drain during
storage, the IOD fuse may be removed.

3.7.1 VEHICLE THEFT SECURITY SYSTEM

When the VTSS is armed, it will monitor the
ignition switch status, ajar switches for the vehicle
doors and decklid. Also monitored is a decklid
security switch (knockout) for the cylinder lock. If
the alarm is tripped, it will sound the vehicles horn,
flash the exterior lamps and the VTSS indicator
located in the instrument cluster.
Arming the system is accomplished by locking the
doors with the door lock switch following a normal
exit sequence of opening the door pressing the
power lock button and closing the door, by using the
driver door cylinder lock switch or by pressing the
RKE lock button. After all the doors are closed, the
VTSS indicator will flash quickly for sixteen-
seconds indicating the pre-arm process, after which
it will flash at a slower rate indicating the system is
armed. If during the pre-arm process a door is
opened, the ignition is turned to the Run/Start
position or if the RKE module receives an unlock
request the system will automatically be disarmed.
If the VTSS indicator stays on steady during pre-
arm, it is an indication of an open decklid security
switch sense circuit.
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