subaru Workshop Repair Guides

Subaru Workshop Service and Repair Manuals

Diagram Information and Instructions|Page 2009 > < Diagram Information and Instructions|Page 2007
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Engine Control Module: Description and Operation

System Schematic

PURPOSE

The ECM is a computer that calculates signals from various sensors and switches to judge engine operating conditions and sends output signals to
provide precise control and functioning of various systems.  Main ECM control functions are:

^ Fuel injection control
^ Ignition system control
^ Pulsed air induction system
^ Exhaust gas recirculation system
^ By-pass air control (idle speed control)

Diagram Information and Instructions|Page 2009 > < Diagram Information and Instructions|Page 2007