Grand AM L4-138 2.3L DOHC VIN D MFI (1994)
OPERATION
During cranking, the EI 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 (IC)
and compensates for all driving conditions. The EI module must receive a "sync pulse" and then a crank signal in that order to enable the engine to
start. The EI module is not repairable. When a EI module is defective, the module is replaced as a separate component.
LOCATION
EI Assembly.
