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Circuit/System Description

WARNING: This page is about a different car, the 2013 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

When the rear compartment lid release switch is pressed, the rear compartment lid release signal circuit to the Body Control Module is grounded. When the rear compartment lid release signal circuit is grounded, the Body Control Module grounds the coil side of the trunk release relay through the trunk release relay control circuit. With ground applied to the coil side of the trunk release relay, voltage is applied to the rear compartment lid release actuator, opening the rear compartment.

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