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Home >> Jeep >> 2011 >> Grand Cherokee Laredo, 5.7 T, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Emissions Control >> Operation >> Non-Monitored Circuits >> Description >> Secondary Ignition Circuit

Secondary Ignition Circuit

The PCM cannot detect an inoperative ignition coil, fouled or worn spark plugs, ignition cross firing, or open spark plug cables.