Scan Tool Testing and Procedures

HISTORY AND CURRENT DTCs
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 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 the 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.