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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 246 (Power Door Lock System And Release Systems - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Trunk Release Malfunction >> Circuit/System Description

Circuit/System Description

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

For an overview of the component/system, refer to:Luggage Compartment Description and Operation

Circuit Description
B+ - Relay Switch Supplied from a fuse.
Signal The control module input circuit has an internal resistance connected to 12 V.
Control - Component The output circuit is switched to 12 V to activate the component.
Control - Relay Coil The output circuit is switched to 12 V to activate the component.
Ground - Component Chassis Ground
Ground - Relay Coil Chassis Ground
Component Description
S58A Rear Compartment Lid Unlatch Switch - Exterior When the switch is activated, the signal circuit to the control module is grounded.
S58B Rear Compartment Lid Unlatch Switch - Interior When the switch is activated, the signal circuit to the control module is grounded.
M40 Rear Compartment Lid Latch An electric DC motor.
K9 Body Control Module The module controls various vehicle functions like lighting, central door locking, power windows, etc.
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