LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2018 >> Suburban 3500 HD LT >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Engine Controls And Fuel - 5.3L (L83) Or 6.2L (L86) - DTC P0443 To DTC P3452 And Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC P3400, P3401, P3403, P3404, P3425, P3427, P3428, P3441, P3443, P3444, P3449, P3451 Or P3452: Cylinder Deactivation Solenoid Valve Control Circuit >> Circuit/System Description

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.

For an overview of the component/system, refer to Cylinder Deactivation (Active Fuel Management) System Description

Circuit Description
Ignition Supplied from a fuse.
Control The output circuit is switched to ground to activate the component.
Component Description
Q43 Valve Lifter Oil Manifold Assembly A solenoid valve is an electro-mechanically operated valve. The valve is controlled by an electric current through the solenoid.The solenoid valve controls the oil flow to the appropriate component:Valve Lifter
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.
scientia non olet · About LEMON Manuals