Ignition Control Module

The Ignition Control (IC) module is located on top of the rear camshaft cover. The IC module performs several functions:
^ It monitors the On-Off pulses produced by the two crankshaft and one camshaft position sensors.
^ It creates a 4X and 24X reference signal (4X REF HI and 24X Crank) sent to the PCM for ignition control.
^ It creates a camshaft reference signal (CAM HI) sent to the PCM for fuel injection control.
^ It provides a ground reference (REF LO, CAM LO) to the PCM.
^ It provides a means for the PCM to control spark advance (BYPASS and IGNITION CONTROL) called IGNITION CONTROL MODE.
^ It provides a limited means of controlling spark advance without PCM input called MODULE MODE.
^ The IC module is not repairable. When a module is replaced the remaining components must be transferred to the new module.