Without Scan Tool

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





WITH THE SCAN TOOL
Connect the scan tool to the data link connector and then check diagnostic trouble codes.

Connecting Voltmeter Between Diagnostic Output Terminal And Grounded Terminal Of Data Link Connector:

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.