When the rear compartment lid release switch is pressed, ground is applied on CKT 1576 (BLK) at terminal D5 connector C1 of the instrument panel integration module (IPM). The IPM sends a message via the Class 2 data line to the rear integration module (RIM). The RIM applies ground to CKT 1344 (LT BLU). With the valet switch in the OFF position, voltage is applied from the ALDL fuse through the TRK relay coil. The relay energizes; the relay contacts close and apply voltage from the BODY fuse to the rear compartment lid release actuator. The actuator is connected to ground G402 via CKT 850 (BLK).