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Home >> Cadillac >> 2001 >> Catera V6-3.0L VIN R >> Repair and Diagnosis >> Powertrain Management >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Description and Operation >> Data Link Connector (DLC)
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Data Link Connector (DLC)

The Data Link Connector (DLC) is a 16-pin connector that provides the technician a means of accessing serial data for aid in the diagnosis. This connector allows the technician to use a scan tool in order to monitor the various serial data, parameters, and display the DTC information. The DLC is located inside of the drivers compartment, underneath the dash. Pin-4 and pin-5 are grounds. Pin-7 is the ISO serial data. Pin-16 is B+.