System Controls

The power door locks system can be controlled by any of the following:
^ The Body Control Module controls the power to the door lock actuators.
^ A door lock switch activation.
^ An input to the BCM from the keyless entry transmitter. Refer to keyless Entry System Description and Operation in Keyless Entry for more information about the Keyless Entry System.

IMPORTANT: The power door locks are controlled by the Body Control Module (BCM). The BCM also allows the door locks to operate for 35 seconds after exiting the vehicle and closing the doors. The door locks are enabled whenever either door is open unless the ignition key is in the ignition and the lockout prevention feature is enabled.

Both door lock actuators lock or unlock when either door lock switch is pressed. The locks are operated by reversible actuators. The door lock switches operate the actuators by applying a ground input signal to the BCM. The BCM then commands the actuators to lock or unlock. When the passenger door lock switch or the driver door lock switch is moved to the lock position, ground is applied to the BCM lock input through the Driver Door Lock Switch Lock Signal circuit. The BCM then applies battery voltage to both actuators through the Door Lock Actuator Lock Control circuit. The actuators are grounded by the BCM through the Driver Door Lock Actuator Unlock Control circuit and through the Passenger Door Lock Actuator Unlock Control circuit. When the passenger door lock switch or the driver door lock switch is moved to the unlock position, ground is applied to the BCM unlock input through the Driver Door Lock Switch Unlock Signal circuit. The BCM applies battery voltage to the actuators through the Driver Door Lock Actuator Unlock Control circuit and through the Passenger Door Lock Actuator Unlock Control circuit. Both of the actuators are grounded by the BCM through the Door Lock Actuator Lock Control circuit. Ground is supplied directly to the BCM.