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Home >> Pontiac >> 2001 >> Aztek Base, FWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls (Gasoline Engines) >> Powertrain Control Module & Vehicle Control Module >> Arithmetic Logic Unit
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Arithmetic Logic Unit

The Arithmetic Logic Unit (ALU) is an internal component of the PCM which converts electrical signals received from various engine sensors into digital signals for use by the CPU.