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CMP FMEM
CMP FMEM
Figure 56: Coil On Plug For Crown Victoria/Grand Marquis, Town Car, 4.6L Mustang, 3.0L 4V Taurus/Sable, LS6/LS8, Continental, 4.6L/5.4L/6.8L E/F Series, Expedition/Navigator, Excursion:
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 one is under compression or exhaust.