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Home >> Cadillac >> 1985 >> Seville 4.1 8 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> DFI Theory/Operation - 4.1L V8 >> Operation >> Electronic Control Module (ECM) >> Input/Output Devices
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Input/Output Devices

These integral devices of ECM convert electrical signals received by data sensors and switches to digital signals for use by the CPU.