Circuit/System Description
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
For an overview of the component/system, refer to: Exhaust Aftertreatment System Description
| Circuit | Description |
|---|---|
| 5 V Reference | Regulated voltage supplied by the control module. |
| Serial Data | The serial data circuits are used to exchange information between the control modules. |
| Low Reference | Grounded through the control module. |
| Component | Description |
|---|---|
| B212 Reductant Sensor Module | The sensor sends measured values and state of health information via serial data to the ECM and the reductant control module. |
| K115 Reductant Control Module | The control module controls the heating and dosing of the reductant. |