Ford DIS Ignition Block Diagram - EEC-IV, Coil Pack & Sensor Wiring (V6)
Schematic of a distributorless ignition system showing the DIS module, coil pack, sensors and EEC-IV processor.
This document is a block diagram (schematic) of a Ford Distributorless Ignition System (DIS). It shows how the camshaft sensor and crankshaft sensor — each powered by VBAT and grounded through IGN GND — feed CID and PIP signals to the DIS module. The DIS module (with labeled pins 1, 2, 4, 5, 7, 8, 9, 11, 12) receives VBAT power (pins 1/2), ignition ground (pin 7), the PIP signal (pin 4), and the SPOUT signal from the EEC-IV processor (pin 5). It outputs COIL 1 (pin 8), COIL 2 (pin 11), and COIL 3 (pin 9) drive signals to a three-coil coil pack, and sends the IDM signal (pin 12) to the EEC-IV processor. The EEC-IV processor pins shown are 4 (IDM), 36 (SPOUT), 24 (CID), 56 (PIP), and 16 (IGN GND). The coil pack fires six spark plugs in paired outputs, with plug polarity marked: plugs 1(+)/5(−), 3(+)/4(−), and 2(+)/6(−). A reader can learn the overall signal flow of the DIS ignition system, the module and processor pin assignments for key signals, and the coil-to-spark-plug pairing for a six-cylinder engine.
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Frequently asked questions
- Which DIS module pins drive the ignition coils?
- Pin 8 drives COIL 1, pin 11 drives COIL 2, and pin 9 drives COIL 3, all going to the coil pack.
- How are the spark plugs paired on the coil pack?
- The plugs are paired as 1 (+) with 5 (−), 3 (+) with 4 (−), and 2 (+) with 6 (−).
- What signals pass between the DIS module and the EEC-IV processor?
- The DIS module sends IDM from its pin 12 to EEC-IV pin 4, and receives SPOUT on its pin 5 from EEC-IV pin 36. The EEC-IV also receives CID on pin 24, PIP on pin 56, and IGN GND on pin 16.
- What do the camshaft and crankshaft sensors provide?
- The camshaft sensor provides the CID signal and the crankshaft sensor provides the PIP signal; both sensors are powered by VBAT and grounded via IGN GND.
- Which DIS module pins are power and ground?
- Pins 1 and 2 are VBAT power and pin 7 is IGN GND; a chassis ground is also shown at the module.
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