Ignition Control Module: Description and Operation

PURPOSE
Ignition module is a Transistorized Ignition Module 3-pin (TI3) type that relays spark control signals from Powertrain Control Module (PCM) to ignition coil. Module controls current through coil primary winding.

OPERATION
The module turns current on between firing points to build up a magnetic field around the coil windings. It then turns the current off when signaled from the pulse generator.