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Home >> Cadillac >> 2019 >> CTS Base, AWD >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Power Door Lock System >> Diagnostic Information and Procedures >> Power Door Dead Lock Malfunction >> Circuit/System Description

Circuit/System Description

For an overview of the component/system, refer to:Power Door Locks Description and Operation 

Circuit Description
Control - Relay Coil The output circuit is switched to 12 V to activate the component.
Control - Driver Door Unlock The output circuit is switched from ground to 12 V to activate the component.
Control - All Doors Lock The output circuit is switched from ground to 12 V to activate the component.
Control - Passenger Door Unlock The output circuit is switched from ground to 12 V to activate the component.
Component Description
A23 Door Latch Assembly The door locks are actuated by two bidirectional DC motors. The first motor locks/unlocks the door so that it can not be opened from outside the vehicle (but still from inside). The second motor dead locks the door so that it also can not be opened from the inside. In addition, all unlock buttons inside the vehicle become inoperative.
K9 Body Control Module The module controls various vehicle functions like lighting, central door locking, power windows, etc.
X53A Fuse Block - Rear Body The fuse block houses various fuses and relays.
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