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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Controls - Description & Operation - (Hybrid)) >> Ignition System >> CMP Failure Mode Effects Management (FMEM)

CMP Failure Mode Effects Management (FMEM)

WARNING: This page is about a different variant/trim than selected.

During CMP FMEM the COP ignition works the same as during engine crank. This allows the engine to operate without the PCM knowing if cylinder 1 is under compression or exhaust.