ANSWERS: 1
  • Hope this helps The ESC module has the ability to store Diagnostic Trouble Codes (DTCs) as current or history codes. Most Real Time Dampening (RTD) system malfunctions will display a message in the IPC and set a DTC. The message will remain ON until the RESET button is pressed on, the Driver Information Center (DIC) . As long as the DTC is current, the message will be displayed after every ignition cycle and the RESET must be pressed to bypass the message. History DTCs are intermittent malfunctions and must be diagnosed different then current DTCs. Refer to Intermittents and Poor Connections for a complete description on how history DTCs are used to diagnose intermittent malfunctions. If no current or history DTCs are stored in the ESC module, or if no communications can be established with the RTD system, refer to the RTD Diagnostic System Check before attempting any diagnostic procedures. See: RTD Diagnostic System Check

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