Power Locks: Description and Operation

CIRCUIT OPERATION

Note: The Power Door Lock System has voltage applied from the PWR ACCY Fuse which is controlled by the Retained Accessory Power (RAP) Module. Voltage is applied to the PWR ACCY Fuse 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 RAP operation, refer to that section under "Accessories and Optional Equipment." 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 voltage to one of the terminals and a ground to the other terminal.

Battery voltage is applied to both Door Lock Switches at terminal "A". When the LH Door Lock Switch is moved to "LOCK," battery voltage is applied to both Door Lock Actuators from the GRY (295) wires. Both Actuators are grounded through the TAN (294) wires, the contacts of the LH Door Lock Switch, the DK BLU (245) wire, the contacts of the RH Door Lock Switch and the BLK (750) wires to ground G200.

When the LH Door Lock Switch is moved to "UNLOCK," battery voltage is applied to both Door Lock Actuators in the opposite direction from the TAN (294) wires. Both Actuators are grounded through the GRY (295) wires, the contacts of the LH Door Lock Switch, the LT BLU (244) wire, the contacts of the RH Door Lock Switch and the BLK (750) wires to ground G200.

When the RH Door Lock Switch is moved to "LOCK," battery voltage is applied from the LT BLU (244) wires, the contacts of the LH Door Lock Switch and the GRY (295) wires to both Door Lock Actuators. When the RH Door Lock Switch is moved to "UNLOCK," battery voltage is applied from the DK BLU (245) wire, the contacts of the LH Door Lock Switch, and the TAN (294) wires to both Door Lock Actuators in the opposite direction. During RH Door Lock Switch operation, the Door Lock Actuators are grounded similarly to the way they are grounded during LH Door Lock Switch operation.