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: Electronic Component Description
| Circuit | Description |
|---|---|
| Signal | The control module input circuit has an internal resistance connected to 12 V. |
| Ground | Chassis Ground |
| Component | Description |
|---|---|
| K9 Body Control Module | The control module contains a microprocessor used to process input data to control outputs. |
| K71 Transmission Control Module | The control module receives information from a variety of sensors, switches and serial data information from other control modules. This information is used to control a combination of solenoid valves to obtain the correct line pressure, gear ratio and torque converter clutch operation. |
| S109 Sport Mode Switch | The switch has a normally open contact. |
The signal circuit is connected to the following control module: K9 Body Control Module - When the switch is activated, the signal circuit to the control module is grounded.The K9 sends a serial data message to the K71 indicating the S109 function that has been requested.