Electronic Ignition (EI) System
WARNING: This page is about a different car, the 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, 2003 Ford Excursion, and 2003 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
The Electronic Ignition (EI) consists of a crankshaft position sensor, two four-tower ignition coils and the Powertrain Control Module (PCM). The ignition control module operates by sending crankshaft position information from the crankshaft position sensor to the ignition control module. The ignition control module generates a Profile Ignition Pickup (PIP) signal (engine RPM) and sends it to the PCM. The PIP signal is one of the inputs that the PCM uses to determine transmission strategy, Wide-Open Throttle (WOT) shift control, torque converter clutch control and EPC pressure.