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Home >> Chevrolet >> 2007 >> Aveo Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls & Fuel - 1.6L - Introduction (2 Of 2) >> Description and OperationEngine Control Module Description >> Engine Control Module DescriptionECM Function >> ECM Service PrecautionsFuel System Description
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ECM Service PrecautionsFuel System Description

The engine control module (ECM) is designed to withstand the normal current draws that are associated with vehicle operation. Care must be used in order to avoid overloading any circuits during testing. Do not ground, or apply voltage, to any ECM circuits unless a diagnostic procedure instructs you to do so. Circuits should only be tested with a DMM.

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