Pneumatic Test

Pneumatic Test
This test verifies that the air lines are connected and that they are not restricted. It also verifies that the air compressor, air compressor vent solenoid and air spring solenoid valves are functioning correctly. Verify that the following conditions are met before running the Pneumatic Test.
^ All doors, the liftgate and the liftgate glass must be closed.
^ Transmission must be in PARK.
^ The vehicle speed is less the 10 km/h (6 mph).
^ The ignition switch is in the RUN position.
^ The air suspension service switch must be in the ON position.
^ Battery voltage is greater than 11 volts for the duration of the test.
1. Fulfill the pre-test conditions.
2. Follow the directions on the scan tool to carry out the Pneumatic Test.