Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Dodge Durango 1998-2000 Approved Dodge Durango 1998-99 98DN_8Q
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DN VEHICLE THEFT/SECURITY SYSTEMS 8Q - 1
VEHICLE THEFT/SECURITY SYSTEMS
CONTENTS
page page
GENERAL INFORMATION LIFTGATE AJAR SWITCH . . . . . . . . . . . . . . . . . . 3
ARMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 LIFTGATE LOCK CYLINDER SWITCH . . . . . . . . . 3
DISARMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 SECURITY LAMP . . . . . . . . . . . . . . . . . . . . . . . . 3
ENABLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 DIAGNOSIS AND TESTING
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . 1 RELAYS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
POWER-UP MODE . . . . . . . . . . . . . . . . . . . . . . . 2 VEHICLE THEFT SECURITY SYSTEM . . . . . . . . . 3
TAMPER ALERT . . . . . . . . . . . . . . . . . . . . . . . . . 2 REMOVAL AND INSTALLATION
VEHICLE THEFT SECURITY SYSTEM . . . . . . . . . 1 DOOR AJAR SWITCH . . . . . . . . . . . . . . . . . . . . . 4
DESCRIPTION AND OPERATION DOOR LOCK CYLINDER SWITCH . . . . . . . . . . . . 4
CENTRAL TIMER MODULE . . . . . . . . . . . . . . . . 2 HEADLAMP RELAY . . . . . . . . . . . . . . . . . . . . . . . 5
DOOR AJAR SWITCH . . . . . . . . . . . . . . . . . . . . . 3 HORN RELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
DOOR LOCK CYLINDER SWITCH . . . . . . . . . . . . 3 LIFTGATE AJAR SWITCH . . . . . . . . . . . . . . . . . . 4
HEADLAMP RELAY . . . . . . . . . . . . . . . . . . . . . . . 3 LIFTGATE LOCK CYLINDER SWITCH . . . . . . . . . 5
HORN RELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
GENERAL INFORMATION scan tool. Refer to the Vehicle Theft Security System
menu item on the DRB scan tool for the procedures.
INTRODUCTION The VTSS engine no-run feature is disabled when
The Vehicle Theft Security System (VTSS) is an it is shipped from the factory. This is done by pro-
available factory-installed option on this model. Refer gramming within the Powertrain Control Module
to 8W-39 - Vehicle Theft Security System in Group (PCM). The logic in the PCM prevents the VTSS
8W - Wiring Diagrams for complete circuit descrip- engine no-run feature from arming until the engine
tions and diagrams. start counter within the PCM sees twenty engine
starts. The VTSS no-run feature must be enabled
VEHICLE THEFT SECURITY SYSTEM when the vehicle is received from the assembly plant.
The Vehicle Theft Security System (VTSS) is Once the VTSS engine no-run feature has been
designed to provide perimeter protection against enabled, it cannot be disabled unless the PCM is
unauthorized use or tampering by monitoring the replaced with a new unit. The same VTSS engine no-
vehicle doors and the ignition system. If unautho- run feature enable logic will apply anytime the PCM
rized use or tampering is detected, the system is replaced with a new unit.
responds by sounding the horn, flashing the head-
lamps, and providing an engine no-run feature. ARMING
Following are general descriptions of the features Passive arming of the Vehicle Theft Security Sys-
and major components of the VTSS. Refer to the tem (VTSS) occurs when the vehicle is exited with
owner's manual in the vehicle glove box for more the key removed from the ignition switch, the head-
information on the features, use and operation of the lamps are turned off, and the doors and liftgate are
vehicle theft security system. locked while they are open using the power lock
switch. Passive arming will not begin until all the
ENABLING doors and the liftgate are closed. The power lock
If the vehicle is so equipped, the Vehicle Theft switch will not function if the key is in the ignition
Security System (VTSS) feature is enabled in the switch or the headlamps are turned on with the
high-line Central Timer Module (CTM) before the driver side front door open. The VTSS will not arm if
vehicle is shipped from the factory. However, if the the doors are locked using the key in the lock cylin-
high-line CTM requires replacement, the VTSS fea- der or using the mechanical lock button.
ture must be enabled in the new CTM using a DRB Active arming of the VTSS occurs when the
Remote Keyless Entry (RKE) transmitter is used to
8Q - 2 VEHICLE THEFT/SECURITY SYSTEMS DN
GENERAL INFORMATION (Continued)
lock the vehicle. For active arming to occur, the doors DESCRIPTION AND OPERATION
and liftgate must be closed and the ignition switch
must be in the Off position when the RKE transmit- CENTRAL TIMER MODULE
ter Lock button is depressed. However, once the Two versions of the Central Timer Module (CTM)
VTSS arming process has been completed, the igni- are available on this vehicle, a base version and a
tion switch can be turned to the Accessory position high-line version. The base version of the CTM is
without triggering the alarm. used on base models of the vehicle. The base version
Once the VTSS begins passive or active arming, of the CTM combines the functions of a chime/buzzer
the security lamp in the instrument cluster will flash module, an intermittent wipe module, an illuminated
rapidly for about fifteen seconds. This indicates that entry module and an ignition lamp time delay relay
the VTSS arming is in progress. Turning a key in the in a single unit.
ignition switch, opening a door or the liftgate, or The high-line version of the CTM is used on high-
unlocking a door or the liftgate by any means during line vehicles. The high-line CTM provides all of the
the fifteen second arming process will cause the secu- functions of the base version CTM, but also is used to
rity lamp to stop flashing and the arming process to control and integrate many of the additional elec-
abort. Once the fifteen second arming function is suc- tronic functions and features included on the high-
cessfully completed, the security lamp will stop flash- line models. The high-line version of the CTM
ing to indicate that the VTSS is armed. contains a central processing unit and interfaces with
other modules in the vehicle on the Chrysler Colli-
DISARMING sion Detection (CCD) data bus network.
Passive disarming of the Vehicle Theft Security The CCD data bus network allows the sharing of
System (VTSS) occurs when the vehicle is unlocked sensor information. This helps to reduce wire har-
using the key to unlock either front door or the lift- ness complexity, reduce internal controller hardware,
gate. Active disarming of the VTSS occurs when the and reduce component sensor current loads. At the
vehicle is unlocked by depressing the Unlock button same time, this system provides increased reliability,
of the Remote Keyless Entry (RKE) transmitter. enhanced diagnostics, and allows the addition of
Once the alarm has been activated (horn sounding, many new feature capabilities.
headlamps flashing, and the engine no-run feature), One of the features that the high-line CTM sup-
either disarming method will also deactivate the ports and controls is the Vehicle Theft Security Sys-
alarm. tem (VTSS). In the VTSS, the CTM receives hard-
wired inputs from the door and liftgate ajar, door and
POWER-UP MODE liftgate lock cylinder, and ignition switches. The pro-
When the armed Vehicle Theft Security System gramming in the CTM allows it to process the infor-
(VTSS) senses that the battery has been disconnected mation from these inputs and send control outputs to
and reconnected, it enters its power-up mode. In the energize or de-energize the headlamp (or security)
power-up mode the alarm system remains armed fol- relay, horn relay, and the security lamp. The CTM
lowing a battery failure or disconnect. If the VTSS also sends CCD data bus messages to the Powertrain
was armed prior to a battery disconnect or failure, Control Module (PCM) to control the engine no-run
the system will have to be actively or passively dis- feature of the VTSS
armed after the battery is reconnected. The high-line CTM also contains the receiver and
The power-up mode will also apply if the battery control logic for the power lock and Remote Keyless
goes dead while the system is armed, and battery Entry (RKE) systems, which are integrated into the
jump-starting is attempted. The engine no-run fea- arming, disarming, and triggering functions of the
ture will prevent the engine from starting until the VTSS.
alarm system has been actively or passively dis- Both versions of the CTM are mounted under the
armed. passenger side end of the instrument panel, outboard
of the instrument panel glove box opening. Refer to
TAMPER ALERT Central Timer Module in the Removal and Installa-
The Vehicle Theft Security System (VTSS) tamper tion section of Group 8E - Instrument Panel Systems
alert will sound the horn three times upon disarm- for the service procedures.
ing, if the alarm was triggered and has since timed- For diagnosis of the high-line version of the CTM
out (about fifteen minutes). This feature alerts the or of the CCD data bus, a DRB scan tool and the
vehicle operator that the VTSS was activated while proper Diagnostic Procedures manual are recom-
the vehicle was unattended. mended. The CTM cannot be repaired and, if faulty
or damaged, it must be replaced.
DN VEHICLE THEFT/SECURITY SYSTEMS 8Q - 3
DESCRIPTION AND OPERATION (Continued)
DOOR AJAR SWITCH The headlamp relay cannot be repaired and, if
The door ajar switches are integral to the door faulty or damaged, it must be replaced.
latches on each door. The switches close a path to
ground for the Central Timer Module (CTM) when a HORN RELAY
door is opened, and open the ground path when a The horn relay is a International Standards Orga-
door is closed. nization (ISO) micro-relay. The terminal designations
The door ajar switches cannot be repaired and, if and functions are the same as a conventional ISO
faulty or damaged, the door latch unit must be relay. However, the micro-relay terminal orientation
replaced. (or footprint) is different, current capacity is lower,
and the relay case dimensions are smaller than those
LIFTGATE AJAR SWITCH of the conventional ISO relay.
The liftgate ajar switch is integral to the latch on The horn relay is a electromechanical device that
the liftgate. The switch closes a path to ground for switches battery current to the horn when the horn
the Central Timer Module (CTM) when the liftgate is switch or the high-line Central Timer Module (CTM)
opened, and opens the ground path when the liftgate grounds the relay coil. See Horn Relay in the Diag-
is closed. nosis and Testing section of this group for more infor-
The liftgate ajar switch cannot be repaired and, if mation.
faulty or damaged, the liftgate latch unit must be The horn relay is located in the Power Distribution
replaced. Center (PDC), in the engine compartment. Refer to
the PDC label for relay identification and location.
DOOR LOCK CYLINDER SWITCH If a problem is encountered with a continuously
The door lock cylinder switches are mounted to the sounding horn, it can usually be quickly resolved by
back of the key lock cylinder inside each front door. removing the horn relay from the PDC until further
They are normally-open momentary switches that diagnosis is completed.
close to ground only when the lock cylinder is rotated The horn relay cannot be repaired and, if faulty or
to the unlock position. damaged, it must be replaced.
The door lock cylinder switches cannot be repaired
and, if faulty or damaged, they must be replaced. SECURITY LAMP
The security lamp is located within the instrument
LIFTGATE LOCK CYLINDER SWITCH cluster on the instrument panel. The security lamp is
The liftgate lock cylinder switch is mounted to the illuminated by a red Light-Emitting Diode (LED)
back of the key lock cylinder inside the liftgate. It is that is integral to the instrument cluster circuit
a normally-open momentary switch that closes to board. The security lamp receives fused battery feed
ground only when the lock cylinder is rotated to the at all times and is grounded by the high-line Central
unlock position. Timer Module (CTM) to give a visual indication of
The liftgate lock cylinder switch cannot be repaired the Vehicle Theft Security System (VTSS) arming
and, if faulty or damaged, it must be replaced. status.
The security lamp cannot be repaired and, if faulty
HEADLAMP RELAY or damaged, the instrument cluster unit must be
The headlamp (or security) relay is a International replaced. Refer to Instrument Cluster in the Removal
Standards Organization (ISO) micro-relay. The termi- and Installation section of Group 8E - Instrument
nal designations and functions are the same as a con- Panel Systems for the service procedures.
ventional ISO relay. However, the micro-relay
terminal orientation (or footprint) is different, cur-
DIAGNOSIS AND TESTING
rent capacity is lower, and the relay case dimensions
are smaller than those of the conventional ISO relay.
VEHICLE THEFT SECURITY SYSTEM
The headlamp relay is a electromechanical device
that switches battery current to the headlamps when WARNING: ON VEHICLES EQUIPPED WITH AIR-
the high-line Central Timer Module (CTM) grounds BAGS, REFER TO GROUP 8M - PASSIVE
the relay coil. See Headlamp Relay in the Diagnosis RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
and Testing section of this group for more informa- STEERING WHEEL, STEERING COLUMN, OR
tion. INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
The headlamp relay is located in the junction SERVICE. FAILURE TO TAKE THE PROPER PRE-
block, behind the fuse access panel on the left out- CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
board end of the instrument panel, in the passenger BAG DEPLOYMENT AND POSSIBLE PERSONAL
compartment. INJURY.
8Q - 4 VEHICLE THEFT/SECURITY SYSTEMS DN
DIAGNOSIS AND TESTING (Continued)
The Vehicle Theft Security System (VTSS) and the
Chrysler Collision Detection (CCD) data bus network
should be diagnosed using a DRB scan tool and the
proper Diagnostic Procedures manual. The DRB will
provide confirmation that the data bus is functional,
that the high-line Central Timer Module (CTM) is
receiving and sending the proper messages on the
data bus, that the CTM is receiving the proper hard-
wired inputs and sending the proper hard-wired out-
puts, and that the Powertrain Control Module (PCM)
is receiving the data bus messages from the CTM.
Refer to the Vehicle Theft Security System menu
item on the DRB scan tool for the procedures. Refer
to 8W-39 - Vehicle Theft Security System in Group
8W - Wiring Diagrams for complete circuit descrip-
tions and diagrams.
Fig. 1 Relay Terminals
RELAYS
The horn relay is located in the Power Distribution
REMOVAL AND INSTALLATION
Center (PDC) in the engine compartment. The head-
lamp (or security) relay is located in the junction
DOOR AJAR SWITCH
block in the passenger compartment. Each of these The door ajar switch is integral to the door latch
relays can be tested as described in the following pro- unit. If the door ajar switch is faulty or damaged, the
cedure, however the circuits they are used in do vary. entire door latch unit must be replaced. Refer to
To test the relay circuits, refer to the circuit descrip- Group 23 - Body for the door latch service proce-
tions and diagrams in 8W-39 - Vehicle Theft Security dures.
System in Group 8W - Wiring Diagrams.
LIFTGATE AJAR SWITCH
WARNING: ON VEHICLES EQUIPPED WITH AIR- The liftgate ajar switch is integral to the liftgate
BAGS, REFER TO GROUP 8M - PASSIVE latch unit. If the liftgate ajar switch is faulty or dam-
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY aged, the entire liftgate latch unit must be replaced.
STEERING WHEEL, STEERING COLUMN, OR Refer to Group 23 - Body for the liftgate latch service
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR procedures.
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR- DOOR LOCK CYLINDER SWITCH
BAG DEPLOYMENT AND POSSIBLE PERSONAL (1) Disconnect and isolate the battery negative
INJURY. cable.
(2) Remove the door outside latch handle mount-
Remove the relay (Fig. 1) from the PDC or junction ing hardware and linkage from the inside of the door.
block as described in this group to perform the fol- Refer to Group 23 - Body for the procedures.
lowing tests: (3) From the outside of the door, pull the door out-
(1) A relay in the de-energized position should side latch handle out far enough to access the door
have continuity between terminals 87A and 30, and lock cylinder switch (Fig. 2).
no continuity between terminals 87 and 30. If OK, go
to Step 2. If not OK, replace the faulty relay.
(2) Resistance between terminals 85 and 86 (elec-
tromagnet) should be 75 5 ohms. If OK, go to Step
3. If not OK, replace the faulty relay.
(3) Connect a battery to terminals 85 and 86.
There should now be continuity between terminals
30 and 87, and no continuity between terminals 87A
and 30. If OK, test the relay circuits. If not OK,
replace the faulty relay.
DN VEHICLE THEFT/SECURITY SYSTEMS 8Q - 5
REMOVAL AND INSTALLATION (Continued)
Fig. 3 Liftgate Lock Cylinder Switch Remove/Install
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
Fig. 2 Door Lock Cylinder Switch Remove/Install - BAG DEPLOYMENT AND POSSIBLE PERSONAL
Typical INJURY.
(4) Disengage the door lock cylinder switch from (1) Disconnect and isolate the battery negative
the back of the lock cylinder. cable.
(5) Unplug the door lock cylinder switch wire har- (2) Remove the fuse access panel by unsnapping it
ness connector. from the left outboard end of the instrument panel.
(6) Disengage the retainers that secure the door (3) Unplug the headlamp relay from the junction
lock cylinder switch wire harness to the inner door block (Fig. 4).
panel.
(7) Remove the door lock cylinder switch from the
door.
(8) Reverse the removal procedures to install.
LIFTGATE LOCK CYLINDER SWITCH
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the trim panel from the liftgate inner
panel. Refer to Group 23 - Body for the procedures.
(3) Reach through the access hole in the liftgate
inner panel to disengage the switch from the back of
the liftgate lock cylinder (Fig. 3).
(4) Unplug the liftgate lock cylinder switch wire
harness connector.
(5) Remove the liftgate lock cylinder switch from
the liftgate.
(6) Reverse the removal procedures to install.
HEADLAMP RELAY
Fig. 4 Headlamp Relay Remove/Install
WARNING: ON VEHICLES EQUIPPED WITH AIR- (4) Install the headlamp relay by aligning the
BAGS, REFER TO GROUP 8M - PASSIVE relay terminals with the cavities in the junction
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY block and pushing the relay firmly into place.
STEERING WHEEL, STEERING COLUMN, OR (5) Connect the battery negative cable.
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR (6) Test the relay operation.
SERVICE. FAILURE TO TAKE THE PROPER PRE-
8Q - 6 VEHICLE THEFT/SECURITY SYSTEMS DN
REMOVAL AND INSTALLATION (Continued)
(7) Reinstall the fuse access panel.
HORN RELAY
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the cover from the Power Distribution
Center (PDC) (Fig. 5).
(3) Refer to the label on the PDC for horn relay
identification and location.
(4) Unplug the horn relay from the PDC.
(5) Install the horn relay by aligning the relay ter-
minals with the cavities in the PDC and pushing the
relay firmly into place.
(6) Install the PDC cover. Fig. 5 Power Distribution Center
(7) Connect the battery negative cable.
(8) Test the relay operation.
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