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Home >> Isuzu >> 2003 >> Ascender 4.2 S, 4WD >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Notes
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Computerized Engine Controls: Notes

NOTE: The Powertrain Control Module (PCM) may also be refered to as an Engine Control Module (ECM).

Computerized engine control system monitors and controls engine operation. Input sensors supply information to the Powertrain Control Module (PCM). PCM processes information from input devices and sends output voltage signals to various control devices. See INPUT DEVICES  and OUTPUT SIGNALS  . Information received from input devices is processed by PCM to calculate proper fuel delivery, ignition timing, fuel evaporative purge, exhaust gas recirculation and other emission control systems.

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