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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 333 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> DTC B2494: Liftgate Handle Switch Malfunction (Without TB5) >> Circuit/System Description

Circuit/System Description

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

For an overview of the component/system, refer to: Rear Hatch/Gate Description and Operation 

Circuit Description
Signal The control module input circuit has an internal resistance connected to 12 V.
Ground Chassis Ground
Component Description
S46B Liftgate Unlatch Switch
  • The switch has a normally open contact.
  • When the switch is activated, the signal circuit to the control module is grounded.
K9 Body Control Module The module controls various vehicle functions like lighting, central door locking, power windows, etc.
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