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Home >> Saturn >> 2006 >> Vue Red Line, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Controls - 2.2L (L61) - Introduction (2 Of 2)) >> Description and Operation >> Electronic Ignition (EI) System Description >> Modes of Operation

Modes of Operation

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There is one normal mode of operation during which the ECM controls spark. If the CKP pulses are lost the engine will not run. The loss of a 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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