Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Dodge Dakota 2000-2001.2003.2005 Approved Dodge Dakota 2000 00AN_8Q
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AN VEHICLE THEFT/SECURITY SYSTEMS 8Q - 1
VEHICLE THEFT/SECURITY SYSTEMS
TABLE OF CONTENTS
page page
GENERAL INFORMATION HEADLAMP RELAY. . . . . . . . . . . . . . . . . . . . . . . . 3
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . 1 HORN RELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
VEHICLE THEFT SECURITY SYSTEM. . . . . . . . . . 1 SECURITY LAMP . . . . . . . . . . . . . . . . . . . . . . . . . 3
ENABLING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 DIAGNOSIS AND TESTING
ARMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 VEHICLE THEFT SECURITY SYSTEM. . . . . . . . . . 4
DISARMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 DOOR LOCK CYLINDER SWITCH. . . . . . . . . . . . . 4
POWER-UP MODE . . . . . . . . . . . . . . . . . . . . . . . . 2 RELAYS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
TAMPER ALERT . . . . . . . . . . . . . . . . . . . . . . . . . . 2 REMOVAL AND INSTALLATION
DESCRIPTION AND OPERATION DOOR AJAR SWITCH . . . . . . . . . . . . . . . . . . . . . . 4
CENTRAL TIMER MODULE . . . . . . . . . . . . . . . . . 2 DOOR LOCK CYLINDER SWITCH. . . . . . . . . . . . . 4
DOOR AJAR SWITCH . . . . . . . . . . . . . . . . . . . . . . 3 HEADLAMP RELAY. . . . . . . . . . . . . . . . . . . . . . . . 5
DOOR LOCK CYLINDER SWITCH. . . . . . . . . . . . . 3 HORN RELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
GENERAL INFORMATION The VTSS engine no-run feature is disabled when
it is shipped from the factory. This is done by pro-
INTRODUCTION gramming within the Powertrain Control Module
The Vehicle Theft Security System (VTSS) is an (PCM). The logic in the PCM prevents the VTSS
available factory-installed option on this model. Refer engine no-run feature from arming until the engine
to 8W-39 - Vehicle Theft Security System in Group start counter within the PCM sees twenty engine
8W - Wiring Diagrams for complete circuit descrip- starts. The VTSS no-run feature must be enabled
tions and diagrams. when the vehicle is received from the assembly plant.
Once the VTSS engine no-run feature has been
VEHICLE THEFT SECURITY SYSTEM enabled, it cannot be disabled unless the PCM is
replaced with a new unit. The same VTSS engine no-
The Vehicle Theft Security System (VTSS) is
run feature enable logic will apply anytime the PCM
designed to provide perimeter protection against
is replaced with a new unit.
unauthorized use or tampering by monitoring the
vehicle doors and the ignition system. If unautho-
rized use or tampering is detected, the system ARMING
responds by sounding the horn, flashing the head- Passive arming of the Vehicle Theft Security Sys-
lamps, and providing an engine no-run feature. tem (VTSS) occurs when the vehicle is exited with
Following are general descriptions of the features the key removed from the ignition switch, the head-
and major components of the VTSS. Refer to the lamps are turned off, and the doors are locked while
owner's manual in the vehicle glove box for more they are open using the power lock switch or locked
information on the features, use and operation of the after they are closed by turning either front door lock
vehicle theft security system. cylinder to the lock position using the key. The power
lock switch will not function if the key is in the igni-
ENABLING tion switch or the headlamps are turned on with the
If the vehicle is so equipped, the Vehicle Theft driver side front door open. The VTSS will not arm if
Security System (VTSS) feature is enabled in the the doors are locked using the mechanical lock but-
high-line Central Timer Module (CTM) before the ton.
vehicle is shipped from the factory. However, if a Active arming of the VTSS occurs when the
vehicle with VTSS requires CTM replacement, the Remote Keyless Entry (RKE) transmitter is used to
VTSS feature must be enabled in the new CTM using lock the vehicle. For active arming to occur, the doors
a DRB scan tool. Refer to the Vehicle Theft Security must be closed and the ignition switch must be in the
System menu item on the DRB scan tool for the pro- Off position when the RKE transmitter Lock button
cedures. is depressed. However, once the VTSS arming pro-
cess has been completed, the ignition switch can be
8Q - 2 VEHICLE THEFT/SECURITY SYSTEMS AN
GENERAL INFORMATION (Continued)
turned to the Accessory position without triggering high-line version. The base version of the CTM is
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 and an intermittent wipe module into a sin-
rapidly for about fifteen seconds. This indicates that gle unit. The base CTM also uses inputs from the
the VTSS arming is in progress. Turning a key in the door ajar switches, the headlamp switch and the
ignition switch, opening a door, or unlocking a door key-in ignition switch to control the output to the
by any means during the fifteen second arming pro- dome lamp circuits, which allows the base CTM to
cess will cause the security lamp to stop flashing and provide load shedding to help protect the battery
the arming process to abort. Once the fifteen second from becoming discharged.
arming function is successfully completed, the secu- The high-line version of the CTM is used on high-
rity lamp will stop flashing to indicate that the VTSS line vehicles. The high-line CTM provides all of the
is armed. functions of the base version CTM, but also is used to
control and integrate many of the additional elec-
DISARMING tronic functions and features included on the high-
Passive disarming of the Vehicle Theft Security line models. The high-line version of the CTM
System (VTSS) occurs when the vehicle is unlocked contains a central processing unit and interfaces with
using the key to unlock either door. Active disarming other modules in the vehicle on the Chrysler Colli-
of the VTSS occurs when the vehicle is unlocked by sion Detection (CCD) data bus network.
depressing the Unlock button of the Remote Keyless The CCD data bus network allows the sharing of
Entry (RKE) transmitter. sensor information. This helps to reduce wire har-
Once the alarm has been activated (horn sounding, ness complexity, reduce internal controller hardware,
headlamps flashing, and the engine no-run feature), and reduce component sensor current loads. At the
either disarming method will also deactivate the same time, this system provides increased reliability,
alarm. enhanced diagnostics, and allows the addition of
many new feature capabilities.
POWER-UP MODE One of the features that the high-line CTM sup-
When the armed Vehicle Theft Security System ports and controls is the Vehicle Theft Security Sys-
(VTSS) senses that the battery has been disconnected tem (VTSS). In the VTSS, the CTM receives hard-
and reconnected, it enters its power-up mode. In the wired inputs from the door jamb, door lock cylinder,
power-up mode the alarm system remains armed fol- and ignition switches. The programming in the CTM
lowing a battery failure or disconnect. If the VTSS allows it to process the information from these inputs
was armed prior to a battery disconnect or failure, and send control outputs to energize or de-energize
the system will have to be actively or passively dis- the headlamp relay, horn relay, and the security
armed after the battery is reconnected. lamp. The CTM also sends CCD data bus messages
The power-up mode will also apply if the battery to the Powertrain Control Module (PCM) to control
goes dead while the system is armed, and battery the engine no-run feature of the VTSS
jump-starting is attempted. The engine no-run fea- The high-line CTM also contains the receiver and
ture will prevent the engine from starting until the control logic for the power lock and Remote Keyless
alarm system has been actively or passively dis- Entry (RKE) systems, which are integrated into the
armed. arming, disarming, and triggering functions of the
VTSS.
TAMPER ALERT Both versions of the CTM are mounted under the
The Vehicle Theft Security System (VTSS) tamper passenger side end of the instrument panel, outboard
alert will sound the horn three times upon disarm- of the instrument panel glove box opening. Refer to
ing, if the alarm was triggered and has since timed- Central Timer Module in the Removal and Installa-
out (about fifteen minutes). This feature alerts the tion section of Group 8E - Instrument Panel Systems
vehicle operator that the VTSS was activated while for the service procedures.
the vehicle was unattended. For diagnosis of the high-line version of the CTM
or of the CCD data bus, a DRBIII scan tool and the
proper Diagnostic Procedures manual are recom-
DESCRIPTION AND OPERATION mended. The CTM cannot be repaired and, if faulty
or damaged, it must be replaced.
CENTRAL TIMER MODULE
Two versions of the Central Timer Module (CTM)
are available on this vehicle, a base version and a
AN VEHICLE THEFT/SECURITY SYSTEMS 8Q - 3
DESCRIPTION AND OPERATION (Continued)
DOOR AJAR SWITCH The headlamp relay is located in the Power Distri-
The door ajar switches are integral to the door bution Center (PDC), behind the battery on the left
latches on each door. The switches close a path to side of the engine compartment.
ground for the Central Timer Module (CTM) when a The headlamp relay cannot be repaired and, if
door is opened, and open the ground path when a faulty or damaged, it must be replaced.
door is closed.
The door ajar switches cannot be repaired and, if HORN RELAY
faulty or damaged, the door latch unit must be The horn relay is a International Standards Orga-
replaced. nization (ISO) micro-relay. The terminal designations
and functions are the same as a conventional ISO
DOOR LOCK CYLINDER SWITCH relay. However, the micro-relay terminal orientation
(or footprint) is different, current capacity is lower,
DESCRIPTION and the relay case dimensions are smaller than those
The door lock cylinder switches are mounted to the of the conventional ISO relay.
back of the key lock cylinder inside each front door. The horn relay is a electromechanical device that
They are resistor multiplexed momentary switches switches battery current to the horn when the horn
that are hard wired between a body ground and the switch or the high-line Central Timer Module (CTM)
Central Timer Module (CTM) through the front door grounds the relay coil. Refer to Relays in the Diag-
wire harnesses. These switches are driven by the key nosis and Testing section of this group for more infor-
lock cylinders and contain three internal resistors. mation.
One resistor is used for the neutral switch position, The horn relay is located in the Junction Block
one for the lock position and one for the unlock posi- (JB), on the left end of the instrument panel in the
tion. passenger compartment. See the fuse and relay lay-
The door lock cylinder switches cannot be adjusted out label on the inside of the fuse access panel for
or repaired and, if faulty or damaged, they must be relay identification and location.
replaced. For complete circuit diagrams, refer to If a problem is encountered with a continuously
Vehicle Theft Security System in the Contents of sounding horn, it can usually be quickly resolved by
Group 8W - Wiring Diagrams. removing the horn relay from the JB until further
diagnosis is completed.
OPERATION The horn relay cannot be repaired and, if faulty or
The door lock cylinder switches are actuated by the damaged, it must be replaced.
key lock cylinder when the key is inserted in the lock
cylinder and turned to the lock or unlock positions. SECURITY LAMP
The door lock cylinder switch closes a path to ground The security lamp is located within the instrument
through one of three internal resistors for the CTM cluster on the instrument panel. The security lamp is
when the front door key lock cylinder is in the lock, illuminated by a red Light-Emitting Diode (LED)
unlock or neutral positions. The CTM reads the that is integral to the instrument cluster circuit
switch status through an internal pull-up, then uses board. The security lamp receives fused battery feed
this input and its internal programming to control at all times and is grounded by the high-line Central
the proper Vehicle Theft Security System (VTSS) and Timer Module (CTM) to give a visual indication of
power lock system outputs. the Vehicle Theft Security System (VTSS) arming
status.
HEADLAMP RELAY The security lamp cannot be repaired and, if faulty
The headlamp (or security) relay is a International or damaged, the instrument cluster unit must be
Standards Organization (ISO) micro-relay. The termi- replaced. Refer to Instrument Cluster in the Removal
nal designations and functions are the same as a con- and Installation section of Group 8E - Instrument
ventional ISO relay. However, the micro-relay Panel Systems for the service procedures.
terminal orientation (or footprint) is different, cur-
rent capacity is lower, and the relay case dimensions
are smaller than those of the conventional ISO relay.
The headlamp relay is a electromechanical device
that switches battery current to the headlamps when
the high-line Central Timer Module (CTM) grounds
the relay coil. See Headlamp Relay in the Diagnosis
and Testing section of this group for more informa-
tion.
8Q - 4 VEHICLE THEFT/SECURITY SYSTEMS AN
DIAGNOSIS AND TESTING (3) If a door lock cylinder switch fails any of the
resistance tests, replace the faulty switch as
VEHICLE THEFT SECURITY SYSTEM required.
WARNING: ON VEHICLES EQUIPPED WITH AIR- RELAYS
BAGS, REFER TO GROUP 8M - PASSIVE The headlamp (or security) relay is located in the
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY Power Distribution Center (PDC) in the engine com-
STEERING WHEEL, STEERING COLUMN, OR partment. The horn relay is located in the Junction
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR Block (JB), on the left end of the instrument panel in
SERVICE. FAILURE TO TAKE THE PROPER PRE- the passenger compartment. Each of these relays can
CAUTIONS COULD RESULT IN ACCIDENTAL AIR- be tested as described in the following procedure,
BAG DEPLOYMENT AND POSSIBLE PERSONAL however the circuits they are used in do vary. To test
INJURY. the relay circuits, refer to the circuit descriptions and
diagrams in 8W-39 - Vehicle Theft Security System
The Vehicle Theft Security System (VTSS) and the in Group 8W - Wiring Diagrams.
Chrysler Collision Detection (CCD) data bus network
should be diagnosed using a DRB scan tool and the WARNING: ON VEHICLES EQUIPPED WITH AIR-
proper Diagnostic Procedures manual. The DRB will BAGS, REFER TO GROUP 8M - PASSIVE
provide confirmation that the data bus is functional, RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
that the high-line Central Timer Module (CTM) is STEERING WHEEL, STEERING COLUMN, OR
receiving and sending the proper messages on the INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
data bus, that the CTM is receiving the proper hard- SERVICE. FAILURE TO TAKE THE PROPER PRE-
wired inputs and sending the proper hard-wired out- CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
puts, and that the Powertrain Control Module (PCM) BAG DEPLOYMENT AND POSSIBLE PERSONAL
is receiving the data bus messages from the CTM. INJURY.
Refer to the Vehicle Theft Security System menu
item on the DRB scan tool for the procedures. Refer Remove the relay (Fig. 1) from the PDC or JB as
to 8W-39 - Vehicle Theft Security System in Group described in this group to perform the following tests:
8W - Wiring Diagrams for complete circuit descrip- (1) A relay in the de-energized position should
tions and diagrams. have continuity between terminals 87A and 30, and
no continuity between terminals 87 and 30. If OK, go
DOOR LOCK CYLINDER SWITCH to Step 2. If not OK, replace the faulty relay.
Refer to Vehicle Theft Security System in the (2) Resistance between terminals 85 and 86 (elec-
index of this service manual for the location of com- tromagnet) should be 75 5 ohms. If OK, go to Step
plete door lock cylinder switch wiring diagrams. 3. If not OK, replace the faulty relay.
(1) Disconnect the door lock cylinder switch wire (3) Connect a battery to terminals 85 and 86.
harness connector from the door wire harness con- There should now be continuity between terminals
nector. 30 and 87, and no continuity between terminals 87A
(2) Using an ohmmeter, perform the switch resis- and 30. If OK, test the relay circuits. If not OK,
tance checks between the two cavities of the door replace the faulty relay.
lock cylinder switch wire harness connector. Actuate
the switch by rotating the key in the door lock cylin- REMOVAL AND INSTALLATION
der to test for the proper resistance values in each of
the three switch positions, as shown in the Door Lock
DOOR AJAR SWITCH
Cylinder Switch chart.
The door ajar switch is integral to the door latch
DOOR LOCK CYLINDER SWITCH unit. If the door ajar switch is faulty or damaged, the
entire door latch unit must be replaced. Refer to
Switch Position
Resistance Group 23 - Body for the door latch service proce-
Driver Side Passenger Side dures.
Neutral Neutral 12 Kilohms
Lock (Counter DOOR LOCK CYLINDER SWITCH
Lock (Clockwise) 644 Ohms (1) Disconnect and isolate the battery negative
Clockwise)
cable.
Unlock (Counter Unlock
1565 Ohms (2) Remove the door outside latch handle mount-
Clockwise) (Clockwise)
ing hardware and linkage from the inside of the door.
Refer to Group 23 - Body for the procedures.
AN VEHICLE THEFT/SECURITY SYSTEMS 8Q - 5
REMOVAL AND INSTALLATION (Continued)
(6) Disengage the retainers that secure the door
lock cylinder switch wire harness to the inner door
panel.
(7) Remove the door lock cylinder switch from the
door.
(8) Reverse the removal procedures to install.
TERMINAL LEGEND HEADLAMP RELAY
NUMBER IDENTIFICATION
30 COMMON FEED WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO GROUP 8M - PASSIVE
85 COIL GROUND
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
86 COIL BATTERY
STEERING WHEEL, STEERING COLUMN, OR
87 NORMALLY OPEN INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
87A NORMALLY CLOSED SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
Fig. 1 Relay Terminals
INJURY.
(3) From the outside of the door, pull the door out-
side latch handle out far enough to access the door (1) Disconnect and isolate the battery negative
lock cylinder switch (Fig. 2). cable.
(2) Remove the cover from the Power Distribution
Center (PDC) (Fig. 3).
Fig. 3 Power Distribution Center
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