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Home >> Saturn >> 2007 >> Ion Red Line >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (Engine Controls - Introduction) >> Description and Operation >> Electronic Ignition (EI) System Description >> Engine Control Module (ECM)

Engine Control Module (ECM)

WARNING: This page is about a different car, the 2005 Saturn Ion 3, 2005 Saturn Ion 2, and 2005 Saturn Ion 1. However, it is still accessible from the selected car via links, so may be relevant.

The ECM controls all ignition system functions, and constantly corrects the spark timing. The ECM monitors information from various sensor inputs that include the following:

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