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Home >> Chevrolet >> 2006 >> HHR LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 18 (Engine Controls - 2.2L - (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 Pontiac Pursuit and 2005 Chevrolet Cobalt. 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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