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:Power Door Locks Description and Operation
| Circuit | Description |
|---|---|
| B+ - K9 Body Control Module | Supplied from a fuse. |
| Signal | The control module input circuit has an internal resistance connected to 12 V. |
| Control - Driver Door Unlock | The output circuit is switched from ground to 12 V to activate the component. |
| Control - All Doors Lock | The output circuit is switched from ground to 12 V to activate the component. |
| Control - Passenger Door Unlock | The output circuit is switched from ground to 12 V to activate the component. |
| Ground - S48A Multifunction Switch - Instrument Panel | Chassis Ground |
| Ground - K9 Body Control Module | Chassis Ground |
| Component | Description |
|---|---|
| A23 Door Latch Assembly | The door locks are actuated by a bidirectional DC motor that locks/unlocks the door so that it can not be opened from outside the vehicle (but still from inside). |
| K9 Body Control Module | The module controls various vehicle functions like lighting, central door locking, power windows, etc. The control module also reads various switches and sensors and makes their values available via serial data. |
| S48A Multifunction Switch - Instrument Panel |
|