Without Scan Tool
METHOD OF READING THE DIAGNOSTIC TROUBLE CODESWhen Using a Voltmeter
Connect a voltmeter to 4 terminal and 6 terminal of the data link connector underneath the instrument under cover, and take a reading of the diagnostic trouble codes from the movement of the needle on the voltmeter.
DIAGNOSTIC RESULT DISPLAY METHOD WHEN USING THE CHECK ENGINE/MALFUNCTION INDICATOR LAMP
NOTE: Other diagnostic trouble codes also output as the same code numbers as when using the scan tool.