Direct Ignition System (Dis): Trooper

Direct ignition system consists of a coil pack, ignition module, crankshaft position sensor and ECM. Coil pack consists of 3 interchangeable ignition coils. Ignition module controls primary circuit to coils and spark timing if engine speed is less than 538 RPM or if ECM by-pass circuit becomes open or grounded.

Crankshaft position sensor magnetic pick-up provides a signal to ECM to identify correct firing sequence and crank signals to trigger each coil at proper time. ECM controls timing using crankshaft position, engine RPM, engine temperature and manifold absolute pressure.