equipped with actuator motors to lock or unlock the
latch mechanisms. The door lock actuator motor is
not serviced separately from the door latch, except
for the sliding door(s).

AUTOMATIC DOOR LOCK

The vehicle comes with two options for power door

locks:

• Rolling automatic lock (ENABLE), doors auto-

matically lock at approximately at 25.7 Km/h (16
mph).

• No rolling automatic lock (DISABLE), doors do

not automatically lock when the vehicle is moving.

AUTOMATIC DOOR UNLOCK

The doors will unlock automatically on vehicles

equipped with power door locks if:

• Auto door locks feature is enabled and automatic

unlock is enabled.

• The transmission was in gear and speed was

above zero.

• The transmission in park or neutral and speed

is zero.

• Any door (excluding liftgate) opens.

DOOR LOCK INHIBIT

The BCM cancels out the door lock switch actua-

tion, when the key is in the Ignition Switch and
either front door is open.

Pressing the key fob RKE lock/unlock under these

conditions results in normal lock/unlock activation.

CENTRAL LOCKING

If equipped with Vehicle Theft Security System

(VTSS), all the doors can be locked with the key by
using the driver door lock cylinder. Turning the key
to the lock position will lock all the doors.

DOOR LOCK CIRCUIT PROTECTION

The door lock system is protected by a 40 amp fuse

located in the IPM. The BCM receives lock/unlock
input and will turn on the appropriate drivers and
provide a voltage level to the door lock motor for a
specific time. The IPM is located along the side of the
vehicle battery in the engine compartment.

8N - 38

POWER LOCKS

REMOTE KEYLESS ENTRY SYSTEM

The key fob transmitter (Fig. 1) has six buttons.

Three of them, LOCK, UNLOCK, and PANIC, are
used to actuate parts of, and program the Remote
Keyless Entry (RKE) system via the customer pro-
gramming mode. It is not necessary to use the
PANIC button with the DRB III

t scan tool mode of

programming.

OPERATION

POWER DOOR LOCK SYSTEM

The Body Control Module (BCM) locks or unlocks

the doors when an actuation input signal from a door
lock switch or Remote Keyless Entry Module (RKE)
is received. The BCM turns on the output drivers
and provides a voltage level to the door lock motor
for a specified time. The BCM locks the doors auto-
matically when the vehicle is driven beyond the
speed of 25.7 Km/h (16 mph). The rolling door lock
feature can be disabled if desired. All doors and lift-
gate can be locked or unlocked using mechanical but-
ton or key cylinder methods (Liftgate cylinder does
not lock/unlock vehicle. It only unlocks the liftgate).

AUTOMATIC DOOR LOCKS

The BCM is equipped with a disable feature to

stop the speed sensitive automatic door locks from
functioning. The DISABLE feature can be switched

ON or OFF as desired. When the system is DIS-
ABLED the door locks will operate normally, but will
not lock automatically when the vehicle is rolling.
When the door locks are ENABLED the door locks
will automatically lock when the vehicle is moving at
about 25.7 Km/h (16 mph). All doors are closed, the
PCM has set the “OK TO LOCK” bit, and doors were
not previously locked.

DOOR LOCK INHIBIT

If the key is in the ignition, in any position, and

either front door is ajar, all power door lock function-
ing shall be disabled when activating either door lock
switch. Also, if the Vehicle Theft Alarm (VTA) is
armed, the door lock switch “UNLOCK” feature will
be disabled until the vehicle is disarmed. Pressing
the RKE lock/unlock button under these conditions
will result in a normal lock/unlock activation.

After the key is removed from the Ignition Switch,

or the doors are closed, the power door locks will
operate normally.

CENTRAL LOCKING

If equipped with Vehicle Theft Security System

(VTSS), all the doors can be locked with the key by
using any of the door lock cylinders. Turning the key
to the LOCK position will lock all the doors.

When the driver door key cylinder switch is

detected active, the BCM will activate the illumi-
nated entry feature and the individual front doors
will become mechanically unlocked. To central unlock
all doors, a second transition from OFF to UNLOCK
has to occur within 2 seconds of the first complete
UNLOCK cycle.

To central unlock the driver door, turn the key to

the rear of the vehicle. This indicates an unlock sig-
nal to the BCM. When key cylinder switch is
detected as active, the BCM will activate the illumi-
nated entry feature. The individual doors will become
mechanically unlocked.

To central lock the vehicle, the driver door lock cyl-

inder is turned toward the front of the vehicle. When
a lock input from either key cylinder is detected as
active, the BCM will cancel the illuminated entry
feature and perform the central lock operation.

DOOR LOCK CIRCUIT PROTECTION

The BCM controls the door lock output drivers. If

the door lock switch is actuated continuously for
more than one second the BCM will turn the output
driver OFF (the BCM would consider the switch
stuck). The lock motors are protected with Positive
Temperature Coefficient (PTC) device that prevents
motor burn out.

Fig. 1 KEY FOB

1 - LEFT SLIDING DOOR BUTTON
2 - RIGHT SLIDING DOOR BUTTON
3 - LIFTGATE SWITCH

POWER LOCKS

8N - 39

POWER LOCKS (Continued)

REMOTE KEYLESS ENTRY SYSTEM

• LOCK: Pressing the LOCK button locks all

doors and sounds horn (chirp) and arm the Vehicle
Theft Security System, if equipped. The chirp verifies
that the RKE receiver has sent a message to the
BCM for door lock operation. If a door has not been
closed before pressing the LOCK button, the vehicle
may not be secured and the VTSS will not arm until
the door is closed.

• UNLOCK: Pressing the UNLOCK button once

will unlock the driver’s side doors and activate the
illuminated entry system and disarm Vehicle Theft
Security System, if equipped. Pressing the UNLOCK
button twice within five seconds will unlock all doors
and activate the illuminated entry system.

• LEFT SLIDING DOOR: Pressing the LEFT

SLIDING DOOR BUTTON opens/closes the left
power sliding door remotely.

• RIGHT SLIDING DOOR: Pressing the RIGHT

SLIDING DOOR BUTTON opens/closes the right
power sliding door remotely.

• LIFTGATE: Pressing the LIFTGATE BUTTON

opens/closes the liftgate remotely, if equipped.If not
equipped with power liftgate, pressing the liftgate
button will allow a one time 30 second access to lift-
gate.

• PANIC: Pressing the PANIC button sounds the

horns at half second intervals, flashes the exterior
lamps, and turns ON the interior lamps. The panic
alarm will remain on for three minutes, or until the
PANIC button is actuated again or the ignition
switch is turned to the RUN position.

The Remote Keyless Entry Module is capable of

retaining the transmitter Vehicle Access Code(s)
(VAC) in its memory even after vehicle power has
been interrupted.

NOTE: Additional features available to the customer
are described in the Vehicle Owners Manual.

The RKE system activates the optional memory

seat,

mirror

system

and

adjustable

pedals,

equipped. Two primary key fob transmitters can be
programmed to actuate memory seat and mirror set-
ting 1 or 2. Two additional key fob transmitters can
be added, but they will not be able to operate the
memory seat and mirror system (Refer to 8 - ELEC-
TRICAL/POWER SEATS - OPERATION) and (Refer
to 8 - ELECTRICAL/POWER MIRRORS - OPERA-
TION).

DOOR CYLINDER LOCK
SWITCH

DESCRIPTION

The Door Cylinder Lock Switch is used to:
• Unlock/Lock all the doors via the Central Lock-

ing feature.

• Arm/Disarm the Vehicle Theft Security System.

• Trigger the Illuminated Entry feature.
The door cylinder lock switch is mounted to the

rear of the driver door lock cylinder. When installed
on the rear of the cylinder, there is a tab on the lock
cylinder that aligns with the switch to prevent it
from turning. An anti-rotating device. The door cylin-
der lock switch is a one time use switch. Once it is
removed from the rear of the door lock cylinder, it
may not be reinstalled and a new switch must be
used.

OPERATION

When the Door Cylinder Lock Switch is turned

either way using the door key cylinder, the BCM
reads a direct message signal from the switch.

If turning the key cylinder once, toward the front

of the vehicle, this will:

(1) Mechanically unlock the door lock.
(2) Disarm the Vehicle Theft Security System (if

equipped).

(3) Turn on the Illuminated Entry (if equipped) for

approximately 30 seconds.

If the key cylinder is turned to the unlock position

(toward the front of vehicle) twice within two sec-
onds, all the doors and liftgate will unlock (if
equipped with the central locking feature).

To lock the vehicle using the door cylinder lock

switch, turn the key cylinder toward the rear of the
vehicle once. This will lock the door that you are
using the key on. If equipped with the central locking
feature, this will lock all the other doors and liftgate.
Furthermore, this will arm the vehicle theft security
system and turn off the illuminated entry.

DIAGNOSIS AND TESTING - DOOR CYLINDER
LOCK SWITCH

(1) Visually inspect the switch for proper installa-

tion. Make sure it is seated on the rear of the key
cylinder, with the tab of the door key cylinder prop-
erly aligned with the slot on the door cylinder lock
switch.

(2) Disconnect the switch at the harness connector

and check the resistance in each switch position.

8N - 40

POWER LOCKS

POWER LOCKS (Continued)

CAUTION: Do not disconnect the switch from the
rear of the door key cylinder. This switch is a one
time use switch. Once it is removed from the rear of
the switch, it is not reusable and must be replaced.
Test the switch at the harness connector.

DOOR CYLINDER LOCK SWITCH RESISTANCE

SWITCH POSITION

RESISTANCE VALUE

COUNTERCLOCKWISE

5.4K OHMS

NEUTRAL

18.4K OHMS

CLOCKWISE

2K OHMS

REMOVAL

(1) Disconnect and isolate the battery negative

cable.

(2) Remove the door trim panel of the effected door

cylinder lock switch (Refer to 23 - BODY/DOOR -
FRONT/TRIM PANEL - REMOVAL).

(3) Close the door window.
(4) Disconnect the door cylinder lock switch wire

connector from the door harness, and wiring clip
from the impact beam.

(5) Remove the outer door handle from the door.
(6) Remove the switch from the key cylinder in the

door handle and remove from vehicle.

INSTALLATION

(1) Install the switch on the key cylinder in the

door handle.

(2) Install the door handle.
(3) Connect the door cylinder lock switch wire con-

nector to the door harness, and the wiring clip to the
impact beam.

(4) Install the door trim panel of the affected door

cylinder lock switch (Refer to 23 - BODY/DOOR -
FRONT/TRIM PANEL - INSTALLATION).

(5) Connect the battery negative cable.
(6) Verify system operation.

DOOR LOCK MOTOR

DIAGNOSIS AND TESTING - DOOR LOCK
MOTOR

Verify battery condition before testing door lock

motor(s) (Refer to 8 - ELECTRICAL/BATTERY SYS-
TEM/BATTERY - DIAGNOSIS AND TESTING).

To determine which motor is faulty, check each

individual door for electrical lock and unlock or dis-
connect the motor connectors one at a time, while
operating the door lock switch. In the event that
none of the motors work, the problem may be caused
by a shorted motor or a bad switch. Disconnecting
the defective motor will allow the others to work.

To test an individual door lock motor, disconnect

the electrical connector from the motor. To lock the
door, connect a 12 volt power source to the positive
pin of the lock motor and a ground wire to the other
pin. Refer to the appropriate wiring information. The
wiring information includes wiring diagrams, proper
wire and connector repair procedures, further details
on wire harness routing and retention, as well as
pin-out and location views for the various wire har-
ness connectors, splices and grounds. To unlock the
door reverse the wire connections at the motor pin
terminals. If these results are NOT obtained, replace
the motor.

DOOR LOCK SWITCH

DIAGNOSIS AND TESTING - DOOR LOCK
SWITCH

(1) Remove door trim panel. Refer to Body, Door -

Front, Trim Panel, Removal and Installation.

(2) Disconnect wire connector from back of door

lock switch.

(3) Depress switch to LOCK position.
(4) Using an ohmmeter, test switch resistance

between Pins 2 and 3. Refer to the DOOR LOCK
SWITCH CONTINUITY test and (Fig. 2).

(5) Depress switch to UNLOCK position.
(6) Test resistance between Pins 2 and 3.
(7) Test resistance between pins 2 and 3 while

switch is in its normal unactuated mode.

(8) If resistance values are not within the param-

eters shown replace the door lock switch.

DOOR LOCK SWITCH CONTINUITY

SWITCH

POSITION

CONTINUITY

BETWEEN

RESISTANCE

VALUE

LOCK

2 and 3

5.3K Ohm ± 5%

UNLOCK

2 and 3

2.0K Ohm ± 5%

UNACTUATED

2 and 3

18.3K Ohms ±

Fig. 2 DOOR LOCK SWITCH

POWER LOCKS

8N - 41

DOOR CYLINDER LOCK SWITCH (Continued)

Content .. 122 123 124 125 ..