2.5L EFC System: Operation: Notes

Fuel flow operation from the Single-Point injection system is controlled by SMEC. SMEC receives inputs from various sensors in order to correctly regulate fuel flow at the injector. These include the Manifold Absolute Pressure (MAP) sensor, Throttle Position Sensor (TPS), Oxygen (O2) sensor, coolant temperature sensor, throttle body temperature sensor and vehicle distance sensor. All inputs are converted into signals that are used to adjust air/fuel mixture and/or ignition timing.