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Data Link Connector (DLC)

WARNING: This page is about a different car, the 2004 Buick Regal and 2004 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

The data link connector (DLC) is a standardized 16-way connector located below the instrument panel and close to the steering column. Both the connector design and location are dictated by industry wide agreement to follow SAE J1962 standards.

All data link connectors are required to provide a power supply, hot at all times, to Pin 16. This circuit is used to power the scan tool. All data link connectors provide a power ground at Pin 4 and a clean signal ground at Pin 5.

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