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Home >> Subaru >> 1996 >> Outback [Legacy] AWD F4-2.2L SOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Description and Operation >> Control System >> Power Supply Control
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Power Supply Control

POWER SUPPLY CONTROL
When the ECM receives an ON signal emitted from the ignition switch, current flows through the main relay. This turns the ignition relay ON so that power is supplied to the fuel injectors, mass air flow sensor, idle air control valve, etc.
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