Reading and Clearing Diagnostic Trouble Codes

DIAGNOSTIC TROUBLE CODES CHECK
With The Scan Tool





Connect the scan tool to the data link connector, then check diagnostic trouble codes.

CAUTION: Turn the ignition switch off before disconnecting or connecting the scan tool.





With a voltmeter
Use the special tool to connect a voltmeter between the diagnostic output terminal and the grounded terminal of the data link connector. Then take a reading of the diagnostic trouble codes from the movement of the needle of the voltmeter.

ERASING DIAGNOSTIC TROUBLE CODES
Connect the scan tool to the data link connector (16-pin), then erase the diagnostic trouble codes.