Circuit/System Description
WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
The air suspension system uses level sensors, a control module, compressor, pressure sensor, right and left pressure valves, and exhaust valve to increase or decrease air pressure in the system to control trim height. The air suspension control module supplies battery voltage to the exhaust valve, pressure valves, and compressor relay. The air suspension control module also controls the ground circuits that activate the exhaust valve, pressure valves, and compressor relay which maintain trim height based on the level sensor input voltage.