Scan Tool Testing and Procedures

The Continuously Variable Road Sensing Suspension (CVRSS) control module has the ability to store trouble codes as "CURRENT" or "HISTORY." Most CVRSS system malfunctions will cause the "SERVICE RIDE CONTROL" message to be displayed and set a CVRSS code. The fault message will be displayed as long as the code is "CURRENT." The message will be turned off if a fault is no longer present (i.e., goes "HISTORY") during an ignition cycle. "HISTORY" codes are intermittent malfunctions and must be diagnosed differently than "CURRENT" codes. Refer to "INTERMITTENTS AND POOR CONNECTIONS" for a complete description on how "HISTORY" codes are used to diagnose intermittent faults. If "CURRENT" codes are stored in the CVRSS control module, or if the "SERVICE RIDE CONTROL" message is displayed and no codes are set, refer to the "CVRSS SYSTEM CHECK" chart before attempting any diagnostic procedures.