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Home >> Saturn >> 2003 >> Ion 1 Standard >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Theft Deterrent System >> Description and Operation >> Content Theft Deterrent (CTD) Description and Operation >> Door Ajar Switches

Door Ajar Switches

The CTD system uses the door ajar switches in the door jambs as 1 method to activate the alarm. The body control module (BCM) monitors all door ajar switches via a discrete input from each door ajar switch, including the rear compartment. If the BCM receives a ground signal from a door ajar switch when the CTD system is armed, the BCM activates the alarm.