FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Without Scan Tool

Diagnostic Trouble Code (DTC) Check


Read Diagnostic Trouble Codes From Voltmeter:




Use the special tool (No. MB991529) or equivalent, 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 (DTC) from the movement of the needle of the voltmeter.