General System Description

Fig. 17 Multi-Point injection system.:

Fig. 18 Multi-Point injection system.:

The multi-point injection system, Figs. 17 and 18, used on 4-143.4/2.4L engines, is a computer controlled multi-point fuel injection system which provides a precise air/fuel ratio under all driving conditions. The system utilizes a pre-programmed electronic control unit (ECU), to regulate ignition timing, idle speed, emission devices and air/fuel ratio. Various sensors and switches located throughout the engine compartment, provide information to the ECU. This system also incorporates a self diagnosis function which monitors various parameters for proper operation.