download
WARNING: Disconnecting an air line that is connected to the air compressor can cause personal injury or damage to components as high pressure air is vented uncontrolled. 1. Turn the air suspension switch on. 2. Turn the ignition switch to the RUN position. 3. Connect NGS Tester to the data link connector (DLC). 4. Select Air Suspension Control Module under Active Command Mode: ? VENT FRNT to deflate the front down. ? LIFT FRNT to inflate the front up. ? VENT REAR to deflate the rear down. ? LIFT REAR to inflate the rear up. Front Ride Height Resetting — Clear B2140 DTC 1. Turn the ignition key OFF and turn it back to RUN; exit the vehicle, close all doors and allow the system to vent the vehicle down to kneel height (approximately 30 seconds). 2. Connect New Generation STAR (NGS) Tester to the data link connector (DLC). 3. Select the proper vehicle year, model and engine type. 4. Select 4WAS-AIR SUSP/EVO (4×2 and 4×4) module. 5. Select “Parameter Reset Command (Clear Ride Height) under Active Command Modes” menu, trigger through the warning messages and reset (trigger from OFF to ON): ? NGS version 10.0 — “Front” and “Rear.” ? NGS version 11.0+ — “Front CLR.” 6. Back out the torsion bar adjustment bolt (approximately 40 mm from the bolt head to the bottom surface of the torsion bar adjuster). 7. Deflate the front air shocks by using the NGS “Vent Front” command in “Air Suspension Control” menu (should take about 30 seconds), and jounce the front of the vehicle to fully lower the front of the vehicle. 8. Adjust and measure the vehicle ride height; refer to Section 204-01B. 9. NOTE: Do not save rear ride heights. The air suspension control module has precalibrated values already stored. Refer to Rear Ride Height Mechanical Resetting. Select the “Save Calibration Values (Store Ride Height)” NGS command to calibrate the air suspension control module. Trigger through the warning message(s) and save “FRONT” (trigger from OFF to ON).
