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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 22 (Door Lock System & Door Handles) >> Diagnostic Information and Procedures >> Trunk Ajar Indicator Malfunction >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

The body control module (BCM) monitors the trunk ajar switch circuit. The trunk ajar switch is normally open when the trunk is fully closed. When the trunk is open, the trunk ajar switch contact closes providing a path to ground. The BCM detects the drop in voltage and sends a signal to the driver information center (DIC) which displays the trunk ajar message.

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