Initial Inspection and Diagnostic Overview
Inspection and Verification1. Verify the customer's concern by operating the vehicle to duplicate the condition.
2. Visually inspect for obvious signs of mechanical and electrical damage.
3. If the inspection reveals obvious concerns that can be readily identified, repair as required.
4. If the concern(s) remains after the inspection, run the Auto Test. If any DTCs are retrieved, refer to Air Suspension Control Module Diagnostic Trouble Code (DTC) Index. Diagnostic Trouble Code Tests and Associated Procedures
5. If no DTCs are retrieved, GO to Symptom Chart for further diagnostics. Symptom Related Diagnostic Procedures
6. If no communication with the air suspension control module, GO to Pinpoint Test A. Test A
Using the Super Star 11
The air suspension control module is diagnosed using Super Star II Tester 418-F045 (007-0041B) or equivalent.
The test connector used to communicate with the air suspension control module is located on the RH side of the luggage compartment.
When the tester is connected, the engine is started and the HOLD/TEST button is latched down, the air suspension control module will respond sending a code 10 to the Super Star II Tester which represents "Diagnostics mode entered." If Diagnostic Trouble Code (DTC) 10 is not displayed, GO to Pinpoint Test A.