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Home >> Cadillac >> 2001 >> Eldorado Touring V8-4.6L VIN 9 >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Description and Operation >> Powertrain Control Module (PCM) Description >> Data Link Connector (DLC)

Data Link Connector (DLC)

The Data Link Connector (DLC) provides a class 2 data circuit that allows bi-directional communication between the scan tool, the PCM, and other system control modules. Usually located under the instrument panel, the DLC provides power and ground for the scan tool. Some common uses of the scan tool are listed below:
^ Identifying stored Diagnostic Trouble Codes (DTCs)
^ Clearing DTCs
^ Performing output control tests
^ Reading serial data for diagnostic analysis
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