User Manual
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LAUNCH   Professional 123X User Manual
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Figure 2-1
2.3 Location of the Data Link Connector (DLC)
The DLC (Data  Link  Connector or Diagnostic Link Connector) is typically a 16-
pin connector where diagnostic code readers interface with the vehicle’s on-
board computer. The DLC is usually located 12 inches from the center of the 
instrument panel (dash), under or around the driver’s side  for  most  vehicles.  If 
Data Link Connector is not located under dashboard, a label should be there 
telling location.  For some Asian  and European  vehicles, the  DLC is  located 
behind the ashtray and the ashtray must be removed to access the connector. If 
the DLC cannot be found, refer to the vehicle’s service manual for the location.










