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Home >> Buick >> 2019 >> Envision Base >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Vehicle Access System >> Diagnostic Information and Procedures >> DTC B3930 >> 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.
Component Description
X51A Fuse Block - Instrument Panel The fuse block houses various fuses and relays.
K9 Body Control Module The module controls various vehicle functions like lighting, central door locking, power windows, etc.
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