Operation CHARM
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Impreza L Sedan F4-2.2L SOHC
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Main Relay (Computer/Fuel System)
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Description and Operation
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Main Relay (Computer/Fuel System): Description and Operation
PURPOSE
To provide power to the following components:
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Mass air flow sensor
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Canister purge control solenoid
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Fuel Injectors
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Air control valve
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O2 sensor heater
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FICD solenoid