Ford DIS Ignition Acronyms & Breakout Box Overlay Key - PIP, CID, SPOUT, IDM
Reference page explaining DIS diagnostic-harness acronyms (PIP, CID, SPOUT, IDM, BAT+/-, IGGND, DPI, C1-C3 coil drive) and overlay designator prefixes/suffixes (J=breakout jack, D=DIS module, S/PS/CS=sensor, EEC=source, C=coil).
This single-page reference document explains the acronyms and labeling conventions used on the DIS (Distributorless Ignition System) Schematic and Breakout Box Overlays for the DIS Diagnostic Harness. It defines nine key signal acronyms: PIP (Profile Ignition Pickup, the crankshaft sensor signal), CID (Cylinder IDentification), SPOUT (SPark OUT, the EEC spark control signal), IDM (Ignition Diagnostic Monitor, a diagnostic signal to EEC-IV), BAT+ (battery positive), BAT– (battery negative), IGGND (low current ground reference), DPI (Dual Plug Inhibit — high means right plugs fire, low means both sides fire), and C1/C2/C3 (coil drive for coils 1, 2, and 3). The second section explains the overlay designator system: each signal name carries a prefix or suffix letter indicating the measurement point. The prefix "J" indicates a breakout box jack; suffix "D" means the DIS module; "S," "PS," or "CS" indicate the sensor (P for PIP, C for CID); "EEC" indicates the signal source; and "C" indicates the coil. Two examples are given: "VBAT PS" means VBAT measured at the PIP sensor, and "VBAT D" means VBAT at the DIS module. This page serves as a legend/key for interpreting the companion DIS wiring diagrams and pinout charts in the same document set.
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Frequently asked questions
- What does PIP stand for in a Ford DIS ignition system?
- PIP stands for Profile Ignition Pickup, which is the crankshaft sensor signal.
- What does SPOUT mean on a DIS schematic?
- SPOUT means SPark OUT, the EEC spark control signal.
- What does DPI (Dual Plug Inhibit) indicate?
- DPI is the Dual Plug Inhibit signal: when High, only the right plugs fire; when Low, both sides fire.
- What do the suffix letters like D, S, PS, CS, and C mean on the DIS overlays?
- The suffix tells where the measurement is taken: "D" is at the DIS Module; "S," "PS," or "CS" is at the sensor (P for PIP, C for CID); "EEC" is at the signal source; and "C" is at the coil. The prefix "J" indicates a breakout box jack.
- What does IDM mean in DIS diagnostics?
- IDM is the Ignition Diagnostic Monitor, a diagnostic signal sent to the EEC-IV.
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