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Home >> Cadillac >> 1999 >> Seville STS V8-4.6L VIN 9 >> 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 Test Enabled

TWC Test Enabled

The display shows No or Yes. 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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