Direct Ignition System (Dis)

Direct ignition system consists of a coil pack, ignition module, crankshaft position sensor and ECM. Coil packs consists of 2 independently mounted ignition coils (2.2L) or 3 independently mounted ignition coils (3.2L). 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 and fuel injector pulse width using crankshaft position, engine RPM, engine temperature, MAP sensor and VSS input signals.