Fuel Injection System - Multi-Point: Operation: Ecu

The ECU is a digital microprocessor computer. Data sensors provide the ECU with engine operating information in the form of varying electrical signals. The computer analyzes this information and corrects air/fuel ratio, ignition timing, and emission control as needed to maintain efficient engine operation. Other ECU output signals control the upshift indicator light (manual transmission only), ignition module dwell and A/C clutch operation.