Ok fella, you've asked for it
Are you sitting comfortably......
ECCS Control Unit - the ECU
Crank Angle Sensor - monitors engine speed & piston position, sends signals to ECU to control fuel injection, ignition timing, etc.
Air Flow Meter - measures the amount of air being drawn into the engine
Engine Temperature Sensor - tells ECU coolant temperature for cold enrichment, etc.
Throttle Sensor (incorporating Soft Idle Switch) - reads throttle position, soft idle controls fuel cut when accelerator is released
Fuel Injectors - guess what these do
Pressure Regulator - maintains fuel pressure at a set level so injectors supply the correct amount of fuel
Exhaust Gas Sensor - Lambda sensor, controls mixture. Does not work during high-load operation, deceleration, idling or when its broke
Air Regulator - provides an air bypass to give fast idle when the engine is cold
Auxiliary Air Control (AAC Valve) - controls the idle speed after the engine is warmed up. Is part of the
Idle Air Adjusting (IAA unit), along with the FICD and the idle screw
Fast Idle Control Device (FICD) - increases idle speed when air conditioner is turned on or power steering is turned
If you want to know how each part works as part of the whole system, I'd suggest getting a CD copy of the manual (vol. 1). There's pages of this stuff for fuelling, idle, ignition timing, etc.
Hope this helps you mate, :shock: