Electronic Control Unit (Ecu): Notes
The ECU controls injection by signals received from sensors which detect exhaust gas oxygen content, coolant temperature, manifold absolute pressure, engine speed and air/fuel temperature. The ECU processes this information to determine engine operating conditions. It then provides output control signals to regulate air/fuel ratio, ignition, idle speed and emission control devices. This permits optimum engine performance with minimum emissions. The ECU adjusts automatically for changes in altitude. The ECU is located under the instrument panel on the passenger side of the vehicle. See Fig 1 .