Loyale Sedan (4 Door) 4WD F4-1781cc 1.8L SOHC Turbo (1990)
Ignition Control Module: Description and Operation
Ignition Signal
MPFI Turbo Ignition System Power Transistor
PURPOSE
The ignition signal is used by the ECU to control the ignitor unit. This allows ignition triggering to be accomplished with a relatively low current
signal from the ECU.
OPERATION
A signal is sent to the ignitor module whenever the engine is running. The signals are an on/off pulse, telling the ignitor when to fire the ignition
coil.