Power Locks: Description and Operation

The power lock system allows all of the doors and liftgate to be locked or unlocked electrically by operating a switch on either front door trim panel. The power lock system receives non-switched battery current through a fuse in the Junction Block (JB), so that the power locks remain operational, regardless of the ignition switch position.

The instrument cluster locks the doors automatically when the vehicle is driven beyond the speed of 25.7 Km/h (15 mph), all doors are closed, and the accelerator pedal is depressed. The rolling door lock feature can be disabled if desired.

This vehicle also offers several customer programmable features, which allows the selection of several optional electronic features to suit individual preferences.

The power lock system for this vehicle can also be operated remotely using the Remote Keyless Entry (RKE) transmitters.

DOOR LOCK MOTORS
The lock mechanisms are actuated by a reversible electric motor mounted within each door. The power lock motors are integral to the door latch units.

The power lock motors cannot be adjusted or repaired and, if faulty or damaged, the door latch unit must be replaced.

CENTRAL LOCKING/UNLOCKING
The central locking system controls powered operation of the door and liftgate locks and the illuminated entry system. Central locking included the following features:
- Automatic locking of the doors and liftgate when the vehicle speed exceeds 13 km/h (8 mph).
- Locking prevention with a door lock switch or the RKE transmitter if the key is in the ignition switch and the driver's door is open.
- Driver selectable unlocking mode: unlock only the driver's door or all doors and the liftgate with one press of the RKE transmitter unlock button.
- Automatic illumination of interior courtesy lamps when the vehicle is unlocked.
- Locking all doors and the liftgate by pressing the lock button on the RKE transmitter, or by pressing a lock switch on one of the front doors.

ENHANCED ACCIDENT RESPONSE
In the event of an impact that causes airbag deployment, the Enhanced Accident Response System switches on the interior lamps and unlocks the doors after the vehicle has stopped. This helps emergency personnel render appropriate assistance. The lamps remain on as long as the battery has power or until the ignition key is removed.

POWER LOCKS
The instrument cluster locks or unlocks the doors when an actuation input signal from a door lock switch or Memory Mirror Module is received. The instrument cluster turns on the output drivers and provides a voltage level to the door lock motor for a specified time. All passenger doors can be locked or unlocked using a mechanical button mounted on the door trim panel. The drivers door can be locked or unlocked by using the key cylinder.

DOOR LOCK MOTORS
The door lock motors are controlled by the instrument cluster. A positive and negative battery connection to the two motor terminals will cause the motor to move in one direction. Reversing the current will cause the motor to move in the opposite direction.