Based on inputs from sensors, the ECM controlled the injection volume and timing of each type of fuel injector, according to engine load and engine speed, to optimise the fuel:air mixture for engine conditions.
Pressed by hydraulic pressure from the oil pump, the detent oil passage would become blocked so that it did not operate.
The mass air flow meter also had a built-in intake air temperature sensor.
The triple ground electrode type iridium-tipped spark plugs had 60,000 mile 96,000 km maintenance intervals.