General Description

INTRODUCTION
The doors can be locked or unlocked electrically by operating the switch on either front door panels or with the locking knobs from within the vehicle.

The doors can be locked or unlocked mechanically from the outside with the key or electrically by using the Key Fob Transmitter. Both front doors can also be unlocked by actuation of the inside remote door handle.

SYSTEM OPERATION
Automatic Door Locks
The system includes an automatic door locking feature actuated by the Body Control Module (BCM). The vehicle is built with the system enabled.

When the system is disabled the door locks will work by use of the door lock switches only. When this system is enabled the automatic door locks will work automatically.

The BCM controls the power locks when the door lock switch is activated. If the door lock switch is pressed for longer than eight consecutive seconds, the BCM will de-energize the door lock relay. Also, the BCM will automatically lock all doors when all of the conditions below are met:

- All doors are closed
- Go The vehicle speed exceeds 15 ± 1 M.P.H.
- The throttle position sensor tip-in is greater than 10 ± 2 degrees

The automatic door lock system can be enabled/disabled either by the customer or with the DRB lll scan tool. Refer to the DRB lll or the vehicle owners manual for enabling/disabling procedures.

The BCM will automatically re-lock both doors if the above conditions are met and if any of the doors become ajar and then closes again.

The power latches are also equipped with a thermal protection system which prevents the latches from burning out.

Central Locking System
The central locking system is part of the Vehicle Theft Security System. Using the key, turn the driver's or passenger door cylinder lock to the lock position, both doors will lock. This feature operates differently on each door. Turn key in the driver's door to the unlock position once will unlock driver's door only Turning the key a second time to the unlock position within five seconds of the first time will unlock both doors. Turn key once in the passenger's door to the unlock position will unlock both doors.

The lock/unlock operation will arm/disarm the Vehicle Theft Security System and will also activate/ cancel the illuminated entry feature.

Door Lock Inhibit
With the key in the ignition switch in any position and the driver's door open the Body Control Module will not allow the door locks switches to lock the doors. Once the key is removed, or the driver's door is closed, the Body Control Module will allow the power door locks to lock.