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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Data Link Communication System >> Diagnostic Information & Procedures >> Scan Tool Does Not Power Up >> Test Description

Test Description

The number below refers to the step number on the diagnostic table. See Fig 1.

  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 Diagnostic Table (Steps 1-4)
G01840584Courtesy of GENERAL MOTORS CORP.