ECD SYSTEM

The starting injection volume is determined by adjusting the basic injection volume in accordance with the starter on signals (on time), engine coolant temperature sensor signals and engine speed signal. When the engine is cold, the engine coolant temperature will be lower and the injection volume will be greater.

Figure 1. Injection Volume Control

To determine the starting injection timing, the target injection timing is corrected in accordance with the starter signals, engine coolant temperature, and engine speed. When the engine coolant temperature is low, if the engine speed is high, the injection timing is advanced.

Figure 2. Injection Timing Control

*1	Target Injection Correction
*2	Start Signal
*3	Engine Coolant Temperature Sensor
*4	Crank Position Sensor