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Home >> Pontiac >> 2000 >> Firebird V8-5.7L VIN G >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Scan Tool Does Not Power Up
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Scan Tool Does Not Power Up

Diagnostic Chart:




CIRCUIT DESCRIPTION
The data link connector (DLC) provides operating power for the scan tool at terminal 16 (battery positive voltage) and at terminal 4 (ground). The DLC provides the class 2 serial data signal at terminal 2 and the signal ground at terminal.The scan tool will power up with the ignition off.

TEST DESCRIPTION
1. The CIG/ACCY fuse supplies power to the DLC terminal 16.
4. The DLC battery positive voltage and ground circuits are functioning properly. The malfunction must be due to the scan tool.
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