General System Information

Fig. 1, Emission Control & Mult-Point Injection System Diagram.:

The Multi-Port Injection (MPI) system used on 1986 Galant with 4-143.4/2.4L engine, Fig. 1, uses various sensors and actuators to convert engine operating conditions into electronic signals. These signals are sent to the electronic control unit (ECU) where the optimum injector open-valve time period is computed. This system is also equipped with a self-diagnosis function.