Computerized Engine Controls: Notes

850 turbo models use a Motronic 4.3 injection and electronic ignition system, equipped with self-diagnostic capabilities.

Systems use an Electronic Control Unit (ECU) that receives input from engine monitoring sensors. These sensors include camshaft sensor, coolant temperature sensor, oxygen sensor, knock sensor, mass airflow meter/sensor, timing pick-up and throttle switch. ECU uses these input signals to control air/fuel mixture for emission control, fuel economy and good driveability. Ignition and fuel controls are provided by a single ECU.