Circuit/System Description
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.
| Circuit | Description |
|---|---|
| Ignition | Supplied from a fuse. |
| Control | The output circuit is switched to ground to activate the component. |
| Component | Description |
|---|---|
| K20 Engine Control Module | The control module controls a series of actuators to ensure optimal engine performance. The control module does this by reading values from a variety of sensors, interprets the data and adjusts the engine actuators accordingly. |
| Q44 Engine Oil Pressure Control Solenoid Valve | A solenoid valve is an electro-mechanically operated valve. The valve is controlled by an electric current through the solenoid. |
The engine oil pressure control solenoid valve is used to control engine oil pressure inside the mechanical engine oil pump. The control module controls the commanded state of the solenoid valve based on the following inputs:
- Engine Speed
- Calculated Engine Oil Temperature
- Engine Oil Pressure
- Engine Run Time
When the solenoid valve is commanded Off, oil pressure is higher. When the solenoid valve is commanded On, oil pressure is lower.