Ignition Control Module: Description and Operation

Igniter Circuit Diagram:

PURPOSE
Igniter is an ECU controlled a switching device that activates the primary ignition coil circuit.

LOCATION
Near coil on left side of engine compartment.

OPERATION
The ECU determines optimum ignition timing from various inputs and transmits a primary current OFF signal to the igniter to control ignition timing. The ECU calculates input from these devices to control ignition timing: ignition switch (START position), inhibitor switch (A/T), clutch and neutral switches (M/T), throttle sensor, air flow meter, water thermosensor, crank angle sensor, and diagnosis connector (TEN terminal for base timing adjustment).