Diagnostic Trouble Code (DTC) Self Test
WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
To check the EMIC/CCN for DTC's, cycle the key in the ignition three times (I.E. ON/OFF, ON/OFF, ON/OFF, ON). IF there are any active codes they will be displayed in the EVIC VFD at this time. If there are no active codes, the EVIC VFD will display "NO DTC's." The DTC's may be checked using the scan tool if preferred.