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Home >> Chevrolet >> 1999 >> Lumina V6-3.8L VIN K >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data, Normal Values and Definitions >> Scan Tool Data Definitions - Powertrain Systems >> TWC Diagnostic
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TWC Diagnostic

Scan Tool Displays ENABLED or DISABLED. The scan tool display of ENABLED indicates that MAF, HO2S, ECT, or VSS DTCs that would disable the TWC diagnostic are not present.
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