Power Door Locks Circuit Description (Luxury)

DRIVER AND PASSENGER DOORS
When a Power Door Lock Switch is operated, all of the doors will LOCK or UNLOCK. Power supplied to the switches comes from the CIG LTR fuse #13 through CKT 640 (ORN). Manual operation of each lock is also possible. The Door Lock Inversion Module receives the lock voltage through CKT 195 (LT BLU) and the unlock voltage through CKT 194 (WHT). The Door Lock Inversion Module changes the voltage signals to ground signals so the Body Control Module (BCM) can read what function is being accomplished. CKT 244 (LT BLU) sends door lock ground signals from the Door Lock Inversion Module to the BCM, and for the unlock signal CKT 245 (DK BLU) completes the connection. Ground for the Door Lock Inversion Module runs through CKT 150 (BLK) to ground G202. Depending on the signal sent from the Door Lock Inversion Module the BCM will determine which door(s) will be locked or unlocked. Unlock voltage is sent to the LF Door Lock Motor through CKT 694 (TAN), Voltage from the BCM for the Passenger Door Unlock function is sent through CKT 781 (ORN/BLK) to the unlock coil of the Door Lock Relay. The relay is ground through CKT 150 (BLK) to ground G202. With the coil energized, power is sent out through CKT 294 (TAN) to the door lock motors, unlocking all but the Driver's Door. For the lock function, the BCM sends voltage through CKT 780 (RED/BLK) to the lock coil of the Door Lock Relay. When the relay is energized power is sent out through CKT 295 (GRY) to all door lock motors, locking the doors.

REAR CARGO DOORS
Unlock voltage from the BCM is sent to the Cargo Door Lock Relay through CKT 253 (BRN) which energizes the coil in the relay. Once the Cargo Door Lock Relay is energized, power in through CKT 540 (ORN) contacts with CKT 56 (BLK) sending power to the unlock side of the Rear Cargo Door Lock Motor. The lock function is sent through CKT 295 (GRY) and ground is provided through CKT 294 (TAN), the same as the Driver and Passengers Door Locks. The Cargo Doors must be closed in order for the connection to be complete. The power door lock motor is in the right cargo door. The contactors are on the rear cargo door opening on the body and on the right cargo door.