Air Suspension Diagnostic Control
NOTE:
Vent solenoid is automatically turned on when air compressor is turned on and air spring solenoids are turned off to reduce compressor load.
Air suspension diagnostic control mode is used to manually pump and vent each air spring. Air compressor, air spring solenoids and vent solenoid can be turned on or off individually. Also, the CHECK RIDE CONTROL message and height sensor power can be cycled. These commands are useful to check if actuators are responding mechanically to vehicle dynamics module commands. This mode is also useful when servicing air springs or shock absorbers. Air can be exhausted from air springs prior to servicing.