Testing Procedure: Notes

NOTE: Air suspension control module cannot recognize some system failures. If no DTCs exist, but symptoms exist, match symptom with listed descriptions. See ELECTRONIC AIR SUSPENSION SYSTEM SYMPTOM INDEX table.

Perform VISUAL CHECKS . Service any faults found. Perform PRETEST CHECKS . Perform on-demand self-test. Record all Diagnostic Trouble Codes (DTCs) stored in 4WAS module. Service DTCs in order displayed. After all DTCs and symptoms have been serviced, clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES (DTC) . If symptoms exist, but no DTCs have been stored, see ELECTRONIC AIR SUSPENSION SYSTEM SYMPTOM INDEX table for testing procedures.