With Scan Tool
WARNING: ANYONE WHO DEPARTS FROM THE INSTRUCTIONS PROVIDED IN THIS PUBLICATION MUST FIRST ESTABLISH THAT HE/SHE COMPROMISES EITHER HIS/HER PERSONAL SAFETY OR THE VEHICLE INTEGRITY BY HIS CHOICE OF METHODS, TOOLS, OR PARTS.
Reading Codes With Rotunda NGS Scan Tool 007-00500
To receive input and/or output Diagnostic Trouble Codes, select the DIAGNOSTIC TEST MODE RESULTS from the mode select screen.
If the system is OK, the NGS Scan Tool will display "55 *** NO FAILURES ***".
The NGS Scan Tool will display diagnostic trouble codes (if any) of the malfunctioning components and the number of times the engine has been running since the fault(s) cleared. If the fault is still present, this number will be "0".
NOTE: Pressing CLEAR will not clear the diagnostic trouble code(s) if the fault(s) are still present.
NOTE: For proper diagnosis of vehicle perform the complete Quick Test Procedure. Performance Diagnostic Procedures (Quick Test)
For Diagnostic Trouble Code retrieval procedures refer to Quick Test Step 4.