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Home >> GMC >> 2002 >> Jimmy 2D Utility, Part Time, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1334 (Data Link Communication System) >> Diagnostic Information and Procedures >> Scan Tool Does Not Communicate with VCM/PCM >> Circuit Description
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Circuit Description

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

The provision for communicating with the powertrain control module (PCM) is the data link connector (DLC). The DLC is located under the instrument panel (IP). The DLC is used to link a scan tool to the PCM serial data stream. Some common uses of the scan tool are listed below:

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