In air suspension testing, which actions are performed?

• A. Check Pressure Regulator and Record Ride Height.
• B. Inspect Shock Absorbers Only.
• C. Replace Air Springs.
• D. Calibrate Suspension Sensors.

Answer: (A)

Testing air suspension centers on confirming the system can regulate air pressure and hold the correct ride height. The pressure regulator controls the air pressure in the air springs, which directly affects load support and how high or low the vehicle sits. Recording ride height during testing shows whether the suspension maintains the specified height and responds correctly to changes in load or commanded adjustments. Other actions—like inspecting just the shocks, replacing air springs, or calibrating sensors—are parts of maintenance or broader checks, but the essential testing focus is on verifying the regulator’s performance and the actual ride height.