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Home >> Chevrolet >> 2017 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 65 (Power Door Lock System And Vehicle Access System) >> Diagnostic Information and Procedures >> Door Ajar Indicator Malfunction >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

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

Circuit Description
Signal The control module input circuit has an internal resistance connected to 12 V.
Ground Chassis Ground
Component Description
A23 Door Latch Assembly The lock assemblies also contain a door ajar switch that is open when the door is closed.
M74 Window Motor
  • Power Window Control
  • The control module also reads various switches and sensors and makes their values available via serial data.
M30 Liftgate Latch The DC motor unlatches the rear compartment lid. Once the lid is unlatched, a switch in the latch will close, grounding the signal circuit to the control module K9 indicating rear compartment lid status.
K9 Body Control Module The module controls various vehicle functions like lighting, central door locking, power windows, etc.
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