This part covers the signal architecture and waveform analysis of the Ford low data rate DIS ignition system on a six-cylinder engine.

Topics include:

• The block diagram layout: power supply, ICM, crankshaft and camshaft position sensors, spout, and IDM
• PIP and CID signal characteristics, timing relationships, and degree measurements
• How to identify pull-up vs. pull-down sensor circuits from waveform behavior
• Using coil current signatures as a virtual third scope channel
• Real-world failure diagnosis using PIP, IDM, and CID captures, including a 95 Taurus SHO misfire case
• Spout and IDM relationships and how they mirror CCD behavior from the TF54 system
• How pip and spout notch behavior changes across idle, light cruise, and higher RPM