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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 >> Electronic Ignition (EI) System DescriptionCrankshaft Position (CKP) Sensor >> Modes of OperationNoteworthy Ignition Information
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Modes of OperationNoteworthy Ignition Information

There is one normal mode of operation, with the spark under the engine control module (ECM) control. If the crankshaft position (CKP) sensor pulses are lost the engine will not run. The loss of the camshaft position (CMP) signal may result in a longer crank time since the ECM cannot determine which stroke the pistons are on. Diagnostic trouble codes are available to accurately diagnose the ignition system with a scan tool.

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