Power Locks: Description and Operation

Principles of Operation

Power Locks
The power lock/unlock feature commands all of the vehicle doors, including the liftgate, to lock or unlock upon a command from the door lock control switch or remote transmitter. Power locking and unlocking of the doors functions independently of the key position, vehicle speed or transaxle position. The smart junction box (SJB) activates the power door lock relays to supply the correct power and grounds for the door lock actuators.

Smart Unlock
The smart unlock feature prevents the driver door from locking with the key in the ignition lock cylinder. When the SJB receives a LOCK command from a door lock control switch, and the key is in the ignition lock cylinder with the driver door open, the SJB commands the driver door to unlock.