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Home >> Chevrolet >> 1999 >> Cavalier L4-144 2.4L DOHC VIN T SFI >> 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 >> Engine Scan Tool Data Definitions >> TWC Test Enabled

TWC Test Enabled

Range - Yes/No
The display shows Yes or No. This display indicates the Idle Catalyst Test (P0420) has started to run. There is a 5 second delay between the TWC Test Initialization Conditions Met and the idle catalyst test being enabled.
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