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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 97 (Horn System) >> Diagnostic Information and Procedures >> DTC B2750: Horn Relay Secondary Circuit >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.

For an overview of the component/system, refer to Horns System Description and Operation 

Circuit Description
Control - Relay Coil The output circuit is switched to ground to activate the component.
Component Description
X50A Fuse Block - Underhood 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.