Retrieving Diagnostic Trouble Codes Using Tech-1 Scan Tool
The Tech-1 scan tester (09931-76011) and Mass Storage Cartridge (09931-76030) can be used to retrieve DTCs. Use 16/14 pin DLC cable (09931-76030) to connect Tech-1 to DLC. Turn ignition switch to ON position. Refer to Tech-1 operators manual for specific information on using the Tech-1.
NOTE:
When there are 2 or more diagnostic trouble codes (DTCs) the codes will be indicated from a smaller number to larger number in order. If there are no other codes set, DTC 12 indicates a normal condition.