Circuit/System Description
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
For an overview of the component/system, refer to: Instrument Cluster Description and Operation
| Circuit | Description |
|---|---|
| Signal | The control module input circuit has an internal resistance connected to 5 V. |
| Low Reference | Grounded through the control module. |
| Component | Description |
|---|---|
| B9 Ambient Air Temperature Sensor | The temperature sensor is a negative temperature coefficient thermistor, a resistor which changes based on temperature. |
| K20 Engine Control Module | The K20 control module monitors the B9 ambient air temperature sensor. The control module converts the analog voltage signal input to a temperature value. |