In common with the TCI-H ignition system, the FEI system uses an ignition coil, a Hall sensor distributor, a power output unit (in switch box on TCI-H), electrical wiring, connectors and spark plugs. The difference is that the FEI unit provides voltage control from the Hall sensor and the signal from the Hall sensor is connected to terminal 2 on the power output unit via the control unit.
The ignition timing is determined by the FEI control unit, which is programmed from the ROM, and provided by the current state of the engine by the following components.
PS engine
Knock sensor, hall sensor, temperature sensor, throttle switches (idle and full load) and intake manifold pressure
NG engine
Knock Sensor, Hall Sensor, Sensor Throttle Temperature Switches (idle and full load), airflow meter and altitude sensor (where used)
The control unit includes a self-monitoring feature that is engine specific.
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