4-Wheel Vehicle Dynamic Suspension

1. Verify the customer concern.

2. NOTE: If the door ajar indicator is illuminated when all doors, liftgate, and liftgate glass are closed, the air suspension will not work correctly. Repair door ajar indicator.

Visually inspect for obvious signs of mechanical and electrical damage.





Visual Inspection Chart

3. If the inspection reveals an obvious concern that is readily repaired, correct the concern before continuing with Inspection and Verification.
4. If the concern remains after the inspection, use scan tool connected to the data link connector (DLC) to retrieve continuous diagnostic trouble codes (DTCs) and to execute On-Demand Self-Test diagnostics for the air suspension control module.
^ If the On-Demand Self-Test is passed and no DTCs are retrieved, go to the Symptom Chart to continue diagnostics.
^ If DTCs are retrieved, go to Air Suspension Control Module Diagnostic Trouble Code (DTC) Index. 4-Wheel Vehicle Dynamic Suspension
^ If the air suspension control module cannot be accessed by scan tool, go to Pinpoint Test A. Test A: No Communication With Control Module