Calibration

Calibration

Ride Height Resetting

1. NOTE: Make sure that the air suspension switch is in the ON position.

NOTE: Make sure that a battery voltage of at least 11 volts is maintained while carrying out this procedure.

Turn the ignition to the OFF position.
Exit the vehicle, close all doors and allow the system to vent the vehicle down to kneel height (approximately 45 seconds).
2. With the ignition in the ON position, shift the vehicle into DRIVE and then back to PARK. Exit the vehicle, close all doors and allow the vehicle to pump to trim (approximately 45 seconds).
3. Measure the ride height.
4. Open the LF door.
5. Connect the scan tool to the data link connector (DLC).
6. While outside of the vehicle, select the correct vehicle year, model and engine type.
7. Select 4WAS.
8. Using the active command mode, vent or lift the vehicle to achieve the correct ride height.
9. Select the "Save Calibration Values (Store Ride Height)" diagnostic tool command to calibrate the 4WAS module.