Alero L4-144 2.4L DOHC VIN T SFI (2000)
Ignition Control Module: Description and Operation
Electronic Ignition Control Module (ICM)
The electronic Ignition Control Module (ICM) monitors the CKP sensor signals and based on these signals, sends a 7X reference signal to the PCM so
that correct spark timing and fuel injector control can be maintained during all crank and run conditions. Since the PCM controls spark timing and
ignition control during crank and run, there is no bypass mode.
The ICM is not repairable. When a module is diagnosed to be faulty, the module is replaced as a separate component.
