Electronic Ignition (El) System
WARNING: This page is about a different car, the 2003 Mercury Sable and 2003 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
The electronic ignition (El) system consists of the PCM, a crankshaft position (CKP) sensor and two 4-tower ignition coils. The crankshaft position sensor sends a crankshaft position signal to the PCM. The PCM then sends the appropriate ignition signal to the ignition coils. The PCM uses this signal and wide open throttle (WOT) shift control, torque converter clutch control and electronic pressure control.