Ignition Control Module: Description and Operation

IGNITION CONTROL MODULE (ICM)
The 1CM receives the Ignition Control (IC) signals from the PCM which in turn triggers the corresponding ignition coils. Since the PCM controls spark timing and ignition control during crank and run, there is no bypass mode.
The 1CM is not repairable. When an 1CM is replaced, the remaining components must be transferred to the new module.