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Home >> GMC >> 2002 >> Jimmy 4D Utility, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1632 (Data Link Communication System) >> Diagnostic Information and Procedures >> Scan Tool Does Not Power Up >> Test Description
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Test Description

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number on the diagnostic table.

  1. 4. If the battery positive voltage and ground circuits of the DLC are functioning properly. The malfunction must be due to the scan tool.
Fig 1: Scan Tool Does Not Power Up
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