Pneumatic Test

Pneumatic test is designed to exercise pneumatic components of air suspension. Each air spring is pumped for 5 seconds and then vented for 5 seconds while corresponding height sensor is monitored by vehicle dynamics module for proper ride height transition. This test is used to check air compressor, compressor relay and associated wiring, vent solenoid, air lines, air spring solenoids, air springs and height sensors. If any air spring fails to pass, a trouble code will be displayed. See DIAGNOSTIC TROUBLE CODE DIRECTORY TABLE and perform appropriate test under DIAGNOSTIC TESTS  .