Locks: Description and Operation
Power Door Latch Description and Operation
Keyless Entry Control Module
The keyless entry control module is a multi-function module which performs the following keyless entry system functions:
* Activating vehicle antennas for passive keyless entry functions
* Activating vehicle antennas for keyless start functions
* Backup control for the ECM accessory wakeup and the run/crank relay
* If equipped, controls the electronic steering column lock
* Receiver of the door handle switch inputs and the lock sensor inputs and door open switch (not the door ajar switch)
* Control the door unlatch motors
* Ignition mode switch monitoring
Body Control Module (BCM)
The BCM is a multi-function module that performs the following functions:
* Receive and authenticate active transmitter and keyless start signals from the remote control door lock receiver
* Determines the functionality requested by the transmitter signal
* Performs the function requested by the transmitter signal
Unlock Driver Door Only - Active
Momentarily press the transmitter UNLOCK button to perform the following functions:
* Unlock only the driver door
* Illuminate the interior lamps for a determined length of time or until the ignition mode switch is pressed
* Flash the exterior lights, if enable through personalization
* Disarm the content theft deterrent system
* Deactivate the content theft deterrent system when in the alarm mode
Unlock All Doors - Second Operation - Active
* Momentarily press the transmitter UNLOCK button a second time, within 5 seconds of the first press, to perform the following function:
* Unlock the remaining doors and rear compartment
Unlock Driver Door Only - Passive
If enabled through personalization, approach the driver door with a valid keyless entry transmitter and touch the lock sensor on the front door handle to perform the following functions:
* Unlock and open only the driver door when door handle is operated
* Disarm the content theft deterrent system, if equipped
* Deactivate the content theft deterrent system when in the alarm mode
Unlock All Doors - Passive
Approach any non driver door (front or rear) or, if enabled through personalization, the driver door with a valid keyless entry transmitter and touch the lock sensor on the front door handle to perform the following functions:
* Unlock all vehicle doors and rear compartment
* Disarm the content theft deterrent system, if equipped
* Deactivate the content theft deterrent system when in the alarm mode
Lock All Doors - Active
Press the transmitter LOCK button to perform the following functions:
* Lock all vehicle doors
* Immediately turn off the interior lamps
* Flash the exterior lights, if enabled through personalization
* Chirp the horn, if enabled through personalization
* Arm the content theft deterrent system
Lock All Doors - Passive
Exit the vehicle (with vehicle off) with the keyless entry transmitter to automatically perform the following functions, if equipped.
* Lock all vehicle doors and rear compartment after a delay
* Flash the exterior lights, if enabled through personalization
* Chirp horn, if enabled through personalization
* Arm the content theft deterrent system
When all doors are closed, they can also be locked from the exterior by touching the lock sensor on the outside of a front door handle while having a valid transmitter in range. This function is only active for several minutes after all doors are closed to save battery life.
If more than one keyless entry transmitter is within a vehicle and the keyless entry system detects that one or more transmitters have been left in the vehicle after vehicle is locked, any transmitter left within the vehicle will be temporarily deactivated until:
* A button on the deactivated transmitter is pressed (will only activate the transmitter whose button is pressed)
* A passive unlock of vehicle occurs
* Change in power mode occurs
Rear Compartment Release - Passive
Approach the rear of the vehicle with a valid keyless entry transmitter. Press the trunk release touch pad. The trunk will open.