2002 DODGE RAM horn

may be damaged. Service replacement clocksprings
are shipped pre-centered and with the auto-locking
tabs engaged. A piece of tape covers the auto-locking
tabs to discourage tampering. These auto-locking
tabs should not be disengaged until the clockspring
has been installed on the steering column. If this
shipping tape is removed or damaged, or if the auto-
locking tabs are disengaged before the clockspring is
installed on a steering column, the clockspring cen-
tering procedure must be performed. (Refer to 8 -
ELECTRICAL/RESTRAINTS/CLOCKSPRING -
STANDARD PROCEDURE - CLOCKSPRING CEN-
TERING).
STANDARD PROCEDURE - CLOCKSPRING
CENTERING
The clockspring is designed to wind and unwind
when the steering wheel is rotated, but is only
designed to rotate the same number of turns (about
five complete rotations) as the steering wheel can be
turned from stop to stop. Centering the clockspring
indexes the clockspring tape to other steering compo-
nents so that it can operate within its designed
travel limits. The rotor of a centered clockspring can
be rotated two and one-half turns in either direction
from the centered position, without damaging the
clockspring tape.
However, if the clockspring is removed for service
or if the steering column is disconnected from the
steering gear, the clockspring tape can change posi-
tion relative to the other steering components. The
clockspring must then be re-centered following com-
pletion of such service or the clockspring tape may be
damaged. Service replacement clocksprings are
shipped pre-centered and with the auto-locking tabs
engaged (raised). These auto-locking tabs should not
be disengaged until the clockspring has been
installed on the steering column. If the auto-locking
tabs are disengaged before the clockspring is
installed on a steering column, the clockspring cen-
tering procedure must be performed.
WARNING: DISABLE THE AIRBAG SYSTEM
BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, OR INSTRUMENT PANEL
COMPONENT DIAGNOSIS OR SERVICE. DISCON-
NECT AND ISOLATE THE BATTERY NEGATIVE
(GROUND) CABLE, THEN WAIT TWO MINUTES FOR
THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE
BEFORE PERFORMING FURTHER DIAGNOSIS OR
SERVICE. THIS IS THE ONLY SURE WAY TO DIS-
ABLE THE AIRBAG SYSTEM. FAILURE TO TAKE
THE PROPER PRECAUTIONS COULD RESULT IN
ACCIDENTAL AIRBAG DEPLOYMENT AND POSSI-
BLE PERSONAL INJURY.NOTE: Before starting this procedure, be certain to
turn the steering wheel until the front wheels are in
the straight-ahead position.
(1) Place the front wheels in the straight-ahead
position.
(2) Remove the clockspring from the steering col-
umn. (Refer to 8 - ELECTRICAL/RESTRAINTS/
CLOCKSPRING - REMOVAL).
(3) Depress the two plastic clockspring auto-lock-
ing tabs (Fig. 8).
(4) Keeping the auto-locking tabs depressed, rotate
the clockspring rotor clockwise to the end of its
travel.Do not apply excessive torque.
(5) From the end of the clockwise travel, rotate the
rotor about two and one-half turns counterclockwise,
then release the auto-locking tabs. The clockspring
pigtail wire for the horn switch should end up at the
top, and the pigtail wires for the airbag, optional
speed control switches, and optional remote radio
switches at the bottom. The clockspring is now cen-
tered.
(6) The front wheels should still be in the straight-
ahead position. Reinstall the clockspring onto the
steering column. (Refer to 8 - ELECTRICAL/RE-
STRAINTS/CLOCKSPRING - INSTALLATION).
Fig. 8 Clockspring Auto-Locking Tabs
1 - AIRBAG MODULE WIRE
2 - SPEED CONTROL WIRING
3 - HORN WIRE
4 - CLOCKSPRING ASSEMBLY
5 - AUTO-LOCKING TABS
BR/BERESTRAINTS 8O - 11
CLOCKSPRING (Continued)

DRIVER AIRBAG
DESCRIPTION
The driver airbag protective trim cover is the most
visible part of the driver airbag. The airbag used in
this model is a Next Generation-type that complies
with revised federal airbag standards to deploy with
less force than those used in some prior models. The
driver airbag is located in the center of the steering
wheel, where it is secured with two screws to the
steering wheel armature. Concealed beneath the
driver airbag trim cover are the horn switch, the
folded airbag cushion, the airbag retainer or housing,
the airbag inflator, and the retainers that secure the
trim cover to the airbag housing. The resistive mem-
brane-type horn switch is secured with heat stakes to
the inside surface of the airbag trim cover, between
the trim cover and the folded airbag cushion. The air-
bag inflator is a conventional pyrotechnic-type unit
that is secured with nuts to four studs on the back of
the stamped metal airbag housing.
The driver airbag trim cover has locking blocks
molded into the back side of it that engage a lip
formed around the perimeter of the airbag housing.
Two stamped metal retainers then fit over the infla-
tor mounting studs on the back of the airbag housing
and tabs on the retainer are engaged in slots on the
inside of the trim cover, securely locking the cover
into place. One horn switch pigtail wire has an eyelet
terminal connector that is captured on the upper left
inflator mounting stud between the inflator and the
upper trim cover retainer. The connector insulator of
the other horn switch pigtail wire is routed between
the upper right inflator mounting stud and the infla-
tor, where it is captured by a small plastic retainer
that is pushed onto the stud. The driver airbag can-
not be repaired, and must be replaced if deployed or
in any way damaged. The driver airbag trim cover
and horn switch are available as a unit, and may be
disassembled from the driver airbag for service
replacement.
OPERATION
The driver airbag is deployed by an electrical sig-
nal generated by the Airbag Control Module (ACM)
through the driver airbag line 1 and line 2 (or squib)
circuits. When the ACM sends the proper electrical
signal to the airbag inflator, the electrical energy
generates enough heat to initiate a small pyrotechnic
charge which, in turn, ignites chemical pellets within
the inflator. Once ignited, these chemical pellets burn
rapidly and produce a large quantity of nitrogen gas.
The inflator is sealed to the back of the airbag hous-
ing and a diffuser in the inflator directs all of the
nitrogen gas into the airbag cushion, causing the
cushion to inflate. As the cushion inflates, the driverairbag trim cover will split at predetermined break-
out lines, then fold back out of the way along with
the horn switch. Following an airbag deployment, the
airbag cushion quickly deflates by venting the nitro-
gen gas towards the instrument panel through the
porous fabric material used on the steering wheel
side of the airbag cushion.
Some of the chemicals used to create the nitrogen
gas are considered hazardous in their solid state,
before they are burned, but they are securely sealed
within the airbag inflator. However, the nitrogen gas
that is produced when the chemicals are burned is
harmless. A small amount of residue from the burned
chemicals may cause some temporary discomfort if it
contacts the skin, eyes, or breathing passages. If skin
or eye irritation is noticed, rinse the affected area
with plenty of cool, clean water. If breathing pas-
sages are irritated, move to another area where there
is plenty of clean, fresh air to breath. If the irritation
is not alleviated by these actions, contact a physician.
REMOVAL
The following procedure is for replacement of a
faulty or damaged driver airbag. If the driver airbag
has been deployed, the clockspring and the steering
column assembly must also be replaced. (Refer to 8 -
ELECTRICAL/RESTRAINTS/CLOCKSPRING -
REMOVAL) (Refer to 19 - STEERING/COLUMN -
REMOVAL).
WARNING: DISABLE THE AIRBAG SYSTEM
BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, OR INSTRUMENT PANEL
COMPONENT DIAGNOSIS OR SERVICE. DISCON-
NECT AND ISOLATE THE BATTERY NEGATIVE
(GROUND) CABLE, THEN WAIT TWO MINUTES FOR
THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE
BEFORE PERFORMING FURTHER DIAGNOSIS OR
SERVICE. THIS IS THE ONLY SURE WAY TO DIS-
ABLE THE AIRBAG SYSTEM. FAILURE TO TAKE
THE PROPER PRECAUTIONS COULD RESULT IN
ACCIDENTAL AIRBAG DEPLOYMENT AND POSSI-
BLE PERSONAL INJURY.
WARNING: WHEN REMOVING A DEPLOYED AIR-
BAG, RUBBER GLOVES, EYE PROTECTION, AND A
LONG-SLEEVED SHIRT SHOULD BE WORN. THERE
MAY BE DEPOSITS ON THE AIRBAG CUSHION AND
OTHER INTERIOR SURFACES. IN LARGE DOSES,
THESE DEPOSITS MAY CAUSE IRRITATION TO THE
SKIN AND EYES.
(1) Disconnect and isolate the battery negative
cable. If either of the airbags has not been deployed,
wait two minutes for the system capacitor to dis-
charge before further service.
8O - 14 RESTRAINTSBR/BE

(2) From the underside of the steering wheel,
remove the two screws that secure the driver airbag
to the steering wheel armature (Fig. 10).
(3) Pull the driver airbag away from the steering
wheel far enough to access the two wire harness con-
nectors at the back of the airbag.
(4) Disconnect the clockspring horn switch pigtail
wire connector from the horn switch feed pigtail wire
connector, which is located at the back of the driver
airbag.
CAUTION: Do not pull on the clockspring pigtail
wire to disengage the connector from the driver air-
bag inflator connector receptacle.
(5) The clockspring driver airbag pigtail wire con-
nector is a tight snap-fit into the airbag inflator con-
nector receptacle, which is located at the back of the
driver airbag. Firmly grasp and pull or gently pry on
the clockspring driver airbag wire harness connector
to disconnect it from the airbag inflator connector
receptacle.
(6) Remove the driver airbag from the steering
wheel.
(7) If the driver airbag has been deployed, the
clockspring and the steering column must be
replaced. (Refer to 8 - ELECTRICAL/RESTRAINTS/CLOCKSPRING - REMOVAL) (Refer to 19 - STEER-
ING/COLUMN - REMOVAL).
DISASSEMBLY
The horn switch is integral to the driver airbag
trim cover. If either component is faulty or damaged,
the entire driver airbag trim cover and horn switch
unit must be replaced.
WARNING: DISABLE THE AIRBAG SYSTEM
BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, OR INSTRUMENT PANEL
COMPONENT DIAGNOSIS OR SERVICE. DISCON-
NECT AND ISOLATE THE BATTERY NEGATIVE
(GROUND) CABLE, THEN WAIT TWO MINUTES FOR
THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE
BEFORE PERFORMING FURTHER DIAGNOSIS OR
SERVICE. THIS IS THE ONLY SURE WAY TO DIS-
ABLE THE AIRBAG SYSTEM. FAILURE TO TAKE
THE PROPER PRECAUTIONS COULD RESULT IN
ACCIDENTAL AIRBAG DEPLOYMENT AND POSSI-
BLE PERSONAL INJURY.
Fig. 10 Driver Airbag Remove/Install
1 - DRIVER SIDE AIRBAG MODULE
2 - HORN SWITCH FEED WIRE CONNECTOR3 - CLOCKSPRING WIRE HARNESS CONNECTOR
4 - SCREW (2)
BR/BERESTRAINTS 8O - 15
DRIVER AIRBAG (Continued)

WARNING: THE HORN SWITCH IS INTEGRAL TO
THE DRIVER AIRBAG UNIT. SERVICE OF THIS UNIT
SHOULD BE PERFORMED ONLY BY
DAIMLERCHRYSLER-TRAINED AND AUTHORIZED
DEALER SERVICE TECHNICIANS. FAILURE TO
TAKE THE PROPER PRECAUTIONS OR TO FOL-
LOW THE PROPER PROCEDURES COULD RESULT
IN ACCIDENTAL, INCOMPLETE, OR IMPROPER AIR-
BAG DEPLOYMENT AND POSSIBLE OCCUPANT
INJURIES.
(1) Disconnect and isolate the battery negative
cable. If either of the airbags has not been deployed,
wait two minutes for the system capacitor to dis-
charge before further service.
(2) Remove the driver airbag from the steering
wheel. (Refer to 8 - ELECTRICAL/RESTRAINTS/
DRIVER AIRBAG - REMOVAL).
(3) Remove the plastic wire retainer that captures
the horn switch feed pigtail wire between the upper
left inflator stud and the inflator on the back of the
driver airbag housing (Fig. 11).
(4) Remove the four nuts that secure the upper
and lower trim cover retainers to the studs on the
back of the driver airbag housing
(5) Remove the upper and lower trim cover retain-
ers from the airbag housing studs (Fig. 12).
(6) Remove the horn switch ground pigtail wire
eyelet terminal from the upper right airbag housing
stud.
(7) Disengage the six trim cover locking blocks
from the lip around the outside edge of the driver
airbag housing and remove the housing from the
cover (Fig. 13).
ASSEMBLY
The horn switch is integral to the driver airbag
trim cover. If either component is faulty or damaged,
Fig. 11 Driver Airbag Trim Cover Retainer Nuts
Remove/Install
1 - HORN SWITCH FEED WIRE
2 - HORN SWITCH GROUND WIRE
3 - NUTS
4 - WIRE RETAINER
Fig. 12 Driver Airbag Trim Cover Retainers
1 - UPPER RETAINER
2 - AIRBAG HOUSING
3 - TRIM COVER
4 - NUT (4)
5 - LOWER RETAINER
6 - INFLATOR
7 - STUDS
Fig. 13 Driver Airbag Trim Cover Remove/Install
1 - RETAINER SLOTS
2 - RETAINER SLOTS
3 - HORN SWITCH
4 - LOCKING BLOCKS
8O - 16 RESTRAINTSBR/BE
DRIVER AIRBAG (Continued)

the entire driver airbag trim cover and horn switch
unit must be replaced.
WARNING: DISABLE THE AIRBAG SYSTEM
BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, OR INSTRUMENT PANEL
COMPONENT DIAGNOSIS OR SERVICE. DISCON-
NECT AND ISOLATE THE BATTERY NEGATIVE
(GROUND) CABLE, THEN WAIT TWO MINUTES FOR
THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE
BEFORE PERFORMING FURTHER DIAGNOSIS OR
SERVICE. THIS IS THE ONLY SURE WAY TO DIS-
ABLE THE AIRBAG SYSTEM. FAILURE TO TAKE
THE PROPER PRECAUTIONS COULD RESULT IN
ACCIDENTAL AIRBAG DEPLOYMENT AND POSSI-
BLE PERSONAL INJURY.
WARNING: THE HORN SWITCH IS INTEGRAL TO
THE DRIVER AIRBAG UNIT. SERVICE OF THIS UNIT
SHOULD BE PERFORMED ONLY BY
DAIMLERCHRYSLER-TRAINED AND AUTHORIZED
DEALER SERVICE TECHNICIANS. FAILURE TO
TAKE THE PROPER PRECAUTIONS OR TO FOL-
LOW THE PROPER PROCEDURES COULD RESULT
IN ACCIDENTAL, INCOMPLETE, OR IMPROPER AIR-
BAG DEPLOYMENT AND POSSIBLE OCCUPANT
INJURIES.
WARNING: USE EXTREME CARE TO PREVENT ANY
FOREIGN MATERIAL FROM ENTERING THE DRIVER
AIRBAG, OR BECOMING ENTRAPPED BETWEEN
THE DRIVER AIRBAG CUSHION AND THE DRIVER
AIRBAG TRIM COVER. FAILURE TO OBSERVE THIS
WARNING COULD RESULT IN OCCUPANT INJURIES
UPON AIRBAG DEPLOYMENT.
WARNING: THE DRIVER AIRBAG TRIM COVER
MUST NEVER BE PAINTED. REPLACEMENT TRIM
COVERS ARE SERVICED IN THE ORIGINAL COL-
ORS. PAINT MAY CHANGE THE WAY IN WHICH THE
MATERIAL OF THE TRIM COVER RESPONDS TO AN
AIRBAG DEPLOYMENT. FAILURE TO OBSERVE
THIS WARNING COULD RESULT IN OCCUPANT
INJURIES UPON AIRBAG DEPLOYMENT.
(1) Carefully position the driver airbag in the trim
cover. Be certain that the horn switch feed and
ground pigtail wires are not pinched between the air-
bag housing and the trim cover locking blocks.
(2) Engage the upper and lower trim cover locking
blocks with the lip of the driver airbag housing, then
engage the locking blocks on each side of the trim
cover with the lip of the housing. Be certain that
each of the locking blocks is fully engaged on the lip
of the airbag housing (Fig. 14).(3) Reinstall the horn switch ground pigtail wire
eyelet terminal over the left upper airbag housing
stud.
(4) Reinstall the upper and lower airbag trim cover
retainers over the airbag housing studs. Be certain
that the tabs on the retainers are engaged in the
retainer slots of the trim cover locking blocks (Fig.
13).
(5) Install and tighten the nuts that secure the
trim cover retainers to the airbag housing studs.
Tighten the nuts to 10 N´m (90 in. lbs.).
(6) Route the horn switch feed pigtail wire
between the inflator housing and the right upper air-
bag housing stud.
(7) Reinstall the plastic wire retainer onto the
right upper airbag housing stud to capture horn
switch feed pigtail wire.
(8) Reinstall the driver airbag onto the steering
wheel. (Refer to 8 - ELECTRICAL/RESTRAINTS/
DRIVER AIRBAG - INSTALLATION).
INSTALLATION
The following procedure is for replacement of a
faulty or damaged driver airbag. If the driver airbag
has been deployed, the clockspring and the steering
column assembly must also be replaced. (Refer to 8 -
Fig. 14 Driver Airbag Trim Cover Locking Blocks
Engaged
1 - LIP
2 - TRIM COVER
3 - HORN SWITCH
4 - AIRBAG HOUSING
5 - LOCKING BLOCK
BR/BERESTRAINTS 8O - 17
DRIVER AIRBAG (Continued)

ELECTRICAL/RESTRAINTS/CLOCKSPRING -
REMOVAL) and (Refer to 19 - STEERING/COLUMN
- REMOVAL).
WARNING: DISABLE THE AIRBAG SYSTEM
BEFORE ATTEMPTING ANY STEERING WHEEL,
STEERING COLUMN, OR INSTRUMENT PANEL
COMPONENT DIAGNOSIS OR SERVICE. DISCON-
NECT AND ISOLATE THE BATTERY NEGATIVE
(GROUND) CABLE, THEN WAIT TWO MINUTES FOR
THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE
BEFORE PERFORMING FURTHER DIAGNOSIS OR
SERVICE. THIS IS THE ONLY SURE WAY TO DIS-
ABLE THE AIRBAG SYSTEM. FAILURE TO TAKE
THE PROPER PRECAUTIONS COULD RESULT IN
ACCIDENTAL AIRBAG DEPLOYMENT AND POSSI-
BLE PERSONAL INJURY.
WARNING: USE EXTREME CARE TO PREVENT ANY
FOREIGN MATERIAL FROM ENTERING THE DRIVER
AIRBAG, OR BECOMING ENTRAPPED BETWEEN
THE DRIVER AIRBAG CUSHION AND THE DRIVER
AIRBAG TRIM COVER. FAILURE TO OBSERVE THIS
WARNING COULD RESULT IN OCCUPANT INJURIES
UPON AIRBAG DEPLOYMENT.
WARNING: THE DRIVER AIRBAG TRIM COVER
MUST NEVER BE PAINTED. REPLACEMENT TRIM
COVERS ARE SERVICED IN THE ORIGINAL COL-
ORS. PAINT MAY CHANGE THE WAY IN WHICH THE
MATERIAL OF THE TRIM COVER RESPONDS TO AN
AIRBAG DEPLOYMENT. FAILURE TO OBSERVE
THIS WARNING COULD RESULT IN OCCUPANT
INJURIES UPON AIRBAG DEPLOYMENT.
(1) Assemble the driver airbag trim cover onto the
airbag housing. (Refer to 8 - ELECTRICAL/RE-
STRAINTS/DRIVER AIRBAG - ASSEMBLY).
(2) When installing the driver airbag, reconnect
the clockspring driver airbag pigtail wire harness
connector to the airbag inflator connector receptacle
by pressing straight in on the connector (Fig. 10). You
can be certain that the connector is fully engaged by
listening carefully for a distinct, audible click as the
connector snaps into place.
(3) Reconnect the clockspring horn switch pigtail
wire harness connector to the horn switch feed pig-
tail wire connector, which is located on the back of
the driver airbag.
(4) Carefully position the driver airbag in the
steering wheel. Be certain that the clockspring pig-
tail wires in the steering wheel hub area are not
pinched between the driver airbag and the steering
wheel.(5) From the underside of the steering wheel,
install and tighten the two screws that secure the
driver airbag to the steering wheel armature.
Tighten the screws to 10.2 N´m (90 in. lbs.).
(6) Do not reconnect the battery negative cable at
this time. The airbag system verification test proce-
dure should be performed following service of any
airbag system component. (Refer to 8 - ELECTRI-
CAL/RESTRAINTS - STANDARD PROCEDURE -
VERIFICATION TEST).
FRONT SEAT BELT &
RETRACTOR
REMOVAL
REMOVAL - STANDARD CAB
WARNING: DURING AND FOLLOWING ANY SEAT
BELT SERVICE, CAREFULLY INSPECT ALL SEAT
BELTS, BUCKLES, MOUNTING HARDWARE, AND
RETRACTORS FOR PROPER INSTALLATION,
OPERATION, OR DAMAGE. REPLACE ANY BELT
THAT IS CUT, FRAYED, OR TORN. STRAIGHTEN
ANY BELT THAT IS TWISTED. TIGHTEN ANY
LOOSE FASTENERS. REPLACE ANY BELT THAT
HAS A DAMAGED OR INOPERATIVE BUCKLE OR
RETRACTOR. REPLACE ANY BELT THAT HAS A
BENT OR DAMAGED LATCH PLATE OR ANCHOR
PLATE. NEVER ATTEMPT TO REPAIR A SEAT BELT
COMPONENT. ALWAYS REPLACE DAMAGED OR
FAULTY SEAT BELT COMPONENTS WITH THE COR-
RECT, NEW AND UNUSED REPLACEMENT PARTS
LISTED IN THE MOPAR PARTS CATALOG.
(1) Move the front seats to their most forward
position for easiest access to the front shoulder belt
lower seat belt anchor plate, the retractor, and the
B-pillar.
(2) Remove the screw that secures the lower seat
belt anchor plate to the floor panel near the base of
the B-pillar.
(3) Unsnap and lift the front shoulder belt turning
loop cover to access the screw that secures the turn-
ing loop to the height adjuster (Fig. 15).
(4) Remove the screw that secures the shoulder
belt turning loop to the height adjuster.
(5) Remove the shoulder belt turning loop from the
height adjuster.
(6) Remove the trim from the B-pillar. (Refer to 23
- BODY/INTERIOR/B-PILLAR TRIM - REMOVAL).
(7) Disengage the front seat shoulder belt turning
loop and lower seat belt anchor plate from the B-pil-
lar trim.
8O - 18 RESTRAINTSBR/BE
DRIVER AIRBAG (Continued)

8.0L V-10 ENGINE
(1) Disconnect negative battery cable at battery.
(2) Disconnect positive battery cable at battery.
(3) Remove 2 bolts and battery holddown (Fig. 7).
(4) If equipped, pull up on battery heat shield to
remove it (Fig. 8).
(5) Remove battery from vehicle.
(6) From under left front wheel opening, remove 2
forward battery tray nuts (Fig. 9).(7) Remove 2 nuts and 2 bolts holding battery tray
to vehicle (Fig. 10).
Fig. 7 Battery Holddown
1 - REMOVE 2 BOLTS
2 - BATTERY HOLDDOWN STRAP
Fig. 8 Battery Heat Shield
1 - BATTERY HEAT SHIELD
Fig. 9 Forward Battery Tray Nuts
1 - HORNS
2 - UNDERSIDE OF LEFT FRONT WHEEL OPENING
3 - BATTERY TRAY NUTS
Fig. 10 Battery Tray Mounting
1 - BATTERY TRAY
2 - REMOVE 2 BOLTS
3 - REMOVE 2 NUTS
8P - 8 SPEED CONTROLBR/BE
SPEED CONTROL SERVO (Continued)

VEHICLE THEFT SECURITY
TABLE OF CONTENTS
page page
VEHICLE THEFT SECURITY
DESCRIPTION..........................1
OPERATION............................2
DIAGNOSIS AND TESTING - VEHICLE THEFT
SECURITY SYSTEM....................3VTSS INDICATOR
DESCRIPTION..........................3
OPERATION............................3
DIAGNOSIS AND TESTING - VTSS
INDICATOR...........................4
VEHICLE THEFT SECURITY
DESCRIPTION
The Vehicle Theft Security System (VTSS) is an
available factory-installed option on this model when
it is also equipped with the high-line or premium
Central Timer Module (CTM). The VTSS is designed
to provide perimeter protection against unauthorized
use or tampering by monitoring the vehicle doors and
the ignition system. If unauthorized vehicle use or
tampering is detected, the system responds by puls-
ing the horn, flashing the headlamps, and preventing
the engine from operating.
The VTSS includes the following major compo-
nents, which are described in further detail else-
where in this service manual:
²Central Timer Module- The high-line or pre-
mium Central Timer Module (CTM) is located under
the driver side end of the instrument panel, inboard
of the instrument panel steering column opening.
The high-line or premium CTM contains a micropro-
cessor and software that allow it to provide many
electronic functions and features not available with
base version of the CTM, including the VTSS. The
CTM provides all of the proper VTSS features and
outputs based upon the monitored inputs. The CTM
circuitry monitors hard wired switch inputs, as well
as message inputs received from other vehicle elec-
tronic modules over the Chrysler Collision Detection
(CCD) data bus network. (Refer to 8 - ELECTRICAL/
ELECTRONIC CONTROL MODULES/BODY CON-
TROL/CENTRAL TIMER MODULE -
DESCRIPTION).
²Door Ajar Switch- A door ajar switch is
located on the hinge pillar of each front door in the
vehicle. These switches provide an input to the VTSS
indicating whether the door is opened or closed.
(Refer to 8 - ELECTRICAL/LAMPS/LIGHTING -
INTERIOR/DOOR AJAR SWITCH - DESCRIPTION).
²Door Cylinder Lock Switch- A door cylinder
lock switch is located on the back of each front door
lock cylinder. This switch provides an input to theVTSS indicating whether the system should remain
armed or be disarmed. (Refer to 8 - ELECTRICAL/
POWER LOCKS/DOOR CYLINDER LOCK SWITCH
- DESCRIPTION).
²Horn Relay- The horn relay is located in the
Power Distribution Center (PDC) in the engine com-
partment near the battery. The horn relay is nor-
mally activated by the horn switch to control the
sounding of the vehicle horn or horns. However, it
can also be activated by an output of the Central
Timer Module (CTM) to provide an audible indication
that unauthorized vehicle use or tampering has been
detected. (Refer to 8 - ELECTRICAL/HORN/HORN
RELAY - DESCRIPTION).
²Headlamp Relay- The headlamp relay (also
known as the security relay) is located in the Power
Distribution Center (PDC) in the engine compart-
ment near the battery. The headlamp relay is nor-
mally activated by the Central Timer Module (CTM)
based upon inputs from the Remote Keyless Entry
(RKE) panic mode feature. However, it can also be
activated by an output of the CTM to flash the head-
lamp low beams to provide a highly visible indication
that unauthorized vehicle use or tampering has been
detected. (Refer to 8 - ELECTRICAL/LAMPS/LIGHT-
ING - EXTERIOR/HEADLAMP RELAY - DESCRIP-
TION).
²VTSS Indicator- A red Light Emitting Diode
(LED) located on the lower surface of the overhead
console near the windshield is illuminated by an out-
put of the Central Timer Module (CTM) to indicate
the status of the VTSS. This LED is integral to the
electronic circuit board for the Compass Mini-Trip
Computer (CMTC). (Refer to 8 - ELECTRICAL/
OVERHEAD CONSOLE/COMPASS/MINI-TRIP
COMPUTER - DESCRIPTION).
The engine no-run feature of the VTSS relies upon
communication between the high-line or premium
CTM and the Powertrain Control Module (PCM) over
the Chrysler Collision Detection (CCD) data bus net-
work.
BR/BEVEHICLE THEFT SECURITY 8Q - 1