Power Locks: Description and Operation

HANDLES, LOCKS, LATCHES AND MECHANISMS

The hood consists of the following components:
- hood latch striker
- hood latch
- hood latch release handle and cable

On all doors with lock actuators the door lock actuator is removed as part of the door latch assembly.

The front door consists of the following components:
- front door latch push button rod
- exterior door handle
- front door latch
- door lock control switch
- interior door handle
- door lock actuator (if equipped)
- door lock cylinder

The double latched side and rear doors consist of the following components:
- upper door latch
- lower door latch
- door handle

The single latch side and rear doors consists of the following components:
- latch remote control
- door latch
- exterior door handle (side only)
- lock cylinder
- door lock actuator
- interior door handle

The exterior door handle on the rear door is part of the license plate housing.

The sliding door consists of the following components:
- sliding door latch push button rod
- push button rod remote control
- exterior door handle
- interior door handle
- sliding door upper latch
- sliding door remote control latch
- sliding door lower latch
- sliding door rear latch
- door lock actuator (if equipped)
- door lock cylinder

Vehicles equipped with a sliding door use a vehicle security module to control the lock and unlock function as well as the sliding door memory locking feature.

PRINCIPLES OF OPERATION

Power Door Locks
The vehicle security module controls the power door locks, keyless entry system and the memory locking feature on vehicles equipped with a sliding door. The lock and unlock operation is carried out by supplying ground to the vehicle security module from the door lock control switch. The normal path of the actuators is to ground through the vehicle security module. The door lock control switch will lock and unlock all doors by grounding the appropriate circuit to the vehicle security module. The vehicle security module then supplies power to the appropriate common actuator circuit to lock or unlock all doors.

The sliding door memory lock feature locks the sliding door in the event that a lock command was issued by the operator while the sliding door was open. Since the door lock actuators are located in the sliding door, power is supplied to the actuators through the contact plate. When the sliding door is opened, the circuit is also opened. If a lock command is issued through the remote transmitter or door lock control switches, and the sliding door is opened, the memory lock feature will remember the command, and re-issue the lock signal to the door lock actuators once the sliding door is closed.