Displaying Diagnostic Trouble Codes

Data Link Connector:

Diagnostic trouble codes (DTCs) can be read with the Tech 1 scan tool or by jumping terminal "H" to terminal "A" of the data link connector (DLC) and counting the ANTILOCK lamp flashes. The terminals must be jumped for a few seconds before the DTC will begin to flash. The ANTILOCK lamp displays DTCs similar to the SERVICE ENGINE SOON light for the fuel and emissions system.