Beretta L4-138 2.3L DOHC QUAD 4 HO MFI VIN A (1994)
OPERATION
During cranking, the IDI module monitors the "sync pulse" to begin the ignition firing sequence and below 700 rpm the module controls spark
advance by triggering each of the two coils at a pre-determined interval based on engine speed only. Above 700 rpm the PCM controls the spark
timing (EST) and compensates for all driving conditions. The IDI module must receive a "sync pulse" and then a crank signal in that order to
enable the engine to start. The IDI module is not repairable. When a IDI module is defective, the module is replaced as a separate component.
LOCATION
IDI Assembly.
