Control Units
Electronic Control Units (ECUs) provide precise control of fuel and ignition. Each system has self-diagnostic capabilities.
850 non-turbo models use separate ECUs for fuel injection and ignition control, located in right front of engine compartment.
NOTE:
Components are grouped into 2 categories. The first category is INPUT DEVICES, which are components that control or produce voltage signals monitored by control unit. The second category is OUTPUT SIGNALS
, which are components controlled by control unit.