Power Locks: Description and Operation

IMPORTANT:
The Power Door Lock System is controlled by the Body Control Module (BCM), which contains Retained Accessory Power (RAP) functionality. Voltage is applied to RADIO Fuse 17 for up to 10 minutes after Ignition is turned off or for 35 seconds after exiting the vehicle and closing the doors. Voltage is also applied whenever a door is open. For a complete understanding of Retained Accessory Power (RAP) operation, refer to "Retained Accessory Power (RAP): with AU3". Accessory Delay Module

When a Door Lock Switch is activated in the Power Door Lock system, both doors will lock or unlock in unison. Each lock can also be operated manually. The locks are operated by reversible Actuators. The Door Lock Switches operate the Actuators by applying a ground input signal to the Body Control Module (BCM), which commands the Door Lock Actuators to lock or unlock. When either the LH or RH Door Lock Switch is moved to "LOCK," the Body Control Module switches battery voltage to both Door Lock Actuators from the GRY (295) wires. The LH and RH Actuators are grounded through the TAN (694) and GRY/BLK (1663) wires, through the Body Control Module and the BLK (650) wires to ground G200. When either the LH or RH Door Lock Switch is moved to "UNLOCK," the Body Control Module (BCM) switches battery voltage to both Door Lock Actuators in the opposite direction from the TAN (694) and GRY/BLK (1663) wires. Both Actuators are grounded through the GRY (295) wires, through the Body Control Module (BCM) and the BLK (650) wires to ground G200.