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Home >> Buick >> 1994 >> Roadmaster V8-350 5.7L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Circuit Operation
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Circuit Operation

The Data Stream (on the 800 CKT) uses a 8192 Baud Rate. During normal vehicle operation, the Powertrain Control Module (PCM) serves as the "Master" Module. When using the Tech-1, the Tech-1 will serve as the "Master" Module and interrogate any Module on the 800 CKT.