Igniter Operation

Ignition Circuit - VIN 5:

Purpose:
The igniter electronically fires the ignition coil in response to the ECM signal. Computers generally produce low amperage signals as outputs, much lower than necessary to fire the coil.

Operation:
The igniter is essentially an electronic relay. It receives a "trigger" from the ECM and responds by turning a higher amperage current to the ignition coil on and off. Each time a spark is produced an ignition confirmation (IGF) signal is sent to the ECM.

Construction:
The igniter consists of a power transistor and circuitry to provide a tachometer output.


Location:
Inside engine compartment mounted to right rear of bulkhead.