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Home >> Cadillac >> 1987 >> Allante F7/ME9 >> Repair and Diagnosis >> Engine Performance >> System >> Self-Diagnostics >> Introduction >> Electronic Control Module (ECM) >> Central Processing Unit (CPU)
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Central Processing Unit (CPU)

Digital signals received by CPU are used to perform all mathematical computations and logic functions necessary to deliver proper air/fuel mixture. The CPU also calculates spark timing and idle speed information. The CPU commands operation of emission controls, closed loop fuel control, cruise control and diagnostic system.

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