Power Locks: Description and Operation

The CB-7 (POWER DOOR LOCK) fuse applies battery voltage at all times to the door lock control Unit (in left front door power window and lock switch). Locking or unlocking the doors with either door lock switch locks or unlocks all the doors. The control unit locks or unlocks the doors by applying battery voltage and providing a ground to the door lock actuators in one direction to lock the doors, and in the opposite direction to unlock the doors.

The circuit consists of the door lock (& power window) switch, door lock actuator for the front and rear door, tailgate lock actuator and the door lock key switch.

The front door lock switch-LH is always provided with the battery voltage

The key or the inside lock button on the both driver's and the front passenger's door can activate the lock mechanism of all the doors (including the tailgate).

When the driver's door lock switch or the front passenger's door lock switch is turned on, current flows for about one second to the door lock actuator of each door connected in parallel with the front door lock (& power window) switch-LH to activate the actuator to lock and unlock the doors.