Ignitor (GS300 & SC300)

Ignitor has a Black 10-pin connector and is located in engine compartment, on top of left strut tower. Primary circuit is turned off when Engine Control Module (ECM) delivers a signal to ignitor on the IGT wire, causing ignition coil to fire spark plug. After delivering a command to turn off primary circuit on IGT wire, the ECM monitors ignition confirmation signal on the IGF circuit to ensure primary switching has occurred. If IGF signal is not input to ECM, the ECM will stop fuel injection as a fail safe function.