Control Unit
NOTE:
For ease of understanding, components are grouped into 2 categories. The first category, INPUT DEVICES, is components which control or produce voltage signals that are monitored by the ECU. The second category, OUTPUT DEVICES, are components that are controlled by the ECU (this is usually accomplished by the ECU grounding individual circuits).
The ECU (Electronic Control Unit) is an 8-bit microprocessor with Random Access Memory (RAM) and Read Only Memory (ROM). An input/output interface converts incoming sensor signals to values the processor can utilize to determine engine conditions and direct various output actuators. Main actuators are the Feedback Solenoid Valve (FBSV) and the Slow-Cut Solenoid Valve (SCSV).